Datasheet MS87V1021 Datasheet (OKI)

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Page 1

PEDS87V1021-01

Semiconductor

This version: Sept. 2000

MS87V1021

Recording and Playback IC with Built-in 2-Mbit DRAM

GENERAL DESCRIPTION

The MS87V1021 is a singl e chip recording and pl ayback IC that is con trolled by the microcon troller in s erial mode, compresses voice with the 4-bit OKI ADPCM algorithm or 4-bit OKI ADPCM2 algorithm with high tone quality, and has 2-Mbit DRAM in w hich recorded dat a is stored and 512- K bit mask ROM in which fixed messages reside. The MS87V1021 includes such features as Normal Recording and Playback, Delayed playback, Retroactive playback, Fast forwarding, and Rewinding. The internal memory in which voice data is stored allows a recording/playback system to be constructed merely by externally connecting it to a microphone, a speaker driving amplifier, and a speaker.

FEATURES

• Serial microcontroller interface (clock synchronized)

• Built-in 512-Kbit mask ROM for fixed messages

ROM playback time : Approx. 15 seconds (Fsam = 8.0 kHz) Approx. 20 seconds (Fsam = 6.4 kHz) Approx. 30 seconds (Fsam = 4.0 kHz)

• Voice analyzing and synthesizing system :

4-bit OKI ADPCM or 4-bit OKI ADPCM2 algorithm 8-bit OKI non-linear PCM algorithm (for ROM playback only)

• Sampling frequency (source oscillation frequency: 4.096 MHz) :

4.0 kHz, 5.3 kHz, 6.4 kHz, 8.0 kHz, or 10.6 kHz

• Recording time:

Approx. 60 seconds (Fsam = 8.0 kHz) Approx. 80 seconds (Fsam = 6.4 kHz) Approx. 120 seconds (Fsam = 4.0 kHz)

• Built-in 14-bit A-to-D and D-to-A converters

• Built-in LPF: Attenuation rate –40 dB/oct

• Number of phrases

Variable message: 255 phrases Fixed phrases: 255 phrases

• Source oscillation frequency: 4.096 MHz

• Supply voltage: 2.7 to 3.6 V

• Operating current:

15 mA max. (source oscillation frequency : 4.096 MHz, Supply voltage : 3.6 V)

• Operating temperature: –20 to +70° C

• Package: 32-pin TSOP Type I

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PEDS87V1021-01

Semiconductor

MS87V1021

CONTENTS

GENERAL DESCRIPTION.................................................................................................................................1

FEATURES ....................................................................................................................... ...................................1

BLOCK DIAGRAM.............................................................................................................................................4

PIN CONFIGURATION (TOP VIEW)................................................................................................................4

PIN DESCRIPTION.............................................................................................................................................5

APPLICATION CIRCUIT EXAMPLE................................................................................................................6

ABSOLUTE MAXIMUM RATINGS..................................................................................................................7

RECOMMENDED OPERATING CONDITIONS...............................................................................................7

ELECTRICAL CHARACTERISTICS.................................................................................................................7

DC Characteristics. .............................................................................................................................................7

AC Characteristics ..............................................................................................................................................8

1. Microcontroller interface mode....................................................................................................................8

2. BUSY time when a command is executed..................................................................................................8

3. Status flag time when a command is executed...........................................................................................10

Analog Characteristics......................................................................................................................................11

Analog Input Amplifier Circuit.........................................................................................................................11

LPF Characteristics...........................................................................................................................................12

AD, DA Converter Full Scale...........................................................................................................................12

NOTICE..............................................................................................................................................................13

Power Supply Connection.................................................................................................................................13

Supplementary Explanation on SG Pin.............................................................................................................14

TIMING DIAGRAMS........................................................................................................................................15

Serial microcontroller interface mode...............................................................................................................15

Ready for recording with Rec command...........................................................................................................17

Ready for playback with Play command...........................................................................................................17

Starting recording with Start command ............................................................................................................18

Starting playback with Start command .............................................................................................................18

Ending recording/playback with Stop command ..............................................................................................19

Pause of recording/playback with Pause command ..........................................................................................19

Setting voice area block with Area1 commnand...............................................................................................20

Setting voice area with Area2 command...........................................................................................................20

Setting Delay value with Delay command........................................................................................................21

Deleting phrase with Del command..................................................................................................................21

Outputting STATUS with Status command........................................................................................ ..............22

Reading recording/playback start address with Adrrd command......................................................................23

Writing recording/playback start address with Adrwr command......................................................................23

Copying page data with Copy command..........................................................................................................24

Fast forward/rewind with Cue/rew command...................................................................................................24

Data transfer with Dtrw command....................................................................................................................25

Ending Dtrw mode with End command............................................................................................................25

Continuous ROM playback with Rply command.............................................................................................26

Reset function ...................................................................................................................................................27

Power down function........................................................................................................................................ 27

LIST OF COMMANDS......................................................................................................................................28

Delayed Play Mode............................................................................................................ ...............................28

Retroactive Play Mode (1/2).............................................................................................................................29

Retroactive Play Mode (2/2).............................................................................................................................30

Normal Mode(1/2)............................................................................................................................................31

Normal Mode(2/2)............................................................................................................................................32

Other Commands (Common in All Modes) (1/2)................................................................................... ..........33

Other Commands (Common in All Modes) (2/2).............................................................................................34

Fast Forward/Rewind Playback (Valid only in Retroactive Play Mode and Normal Mode)............................35

FLOWCHARTS .................................................................................................................................................36

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Semiconductor

MS87V1021

Delayed Play Mode............................................................................................................ ...............................36

Retroactive Play Mode (1)................................................................................................................................37

Retroactive Play Mode (2)................................................................................................................................38

Recording in Normal Mode ..............................................................................................................................39

Playback in Normal Mode .................................................... ............................................................................40

Dtrw Command.................................................................................................................................................41

STATUS TRANSITION DIAGRAM.................................................................................................................42

SUMMARY OF OPERATING MODES AND FUNCTIONS...........................................................................43

Delayed Play Mode............................................................................................................................................43

Retroactive Play Mode......................................................................................................................................44

Normal Mode....................................................................................................................................................45

Fast Forward/Rewind Function (Cue/Rew) ......................................................................................................46

Copy Command................................................................................................................................................47

MEMORY ALLOCATION................................................................................................................................49

Storing Sound Data to DRAM (In Pages).........................................................................................................49

Storing Sound Data to DRAM (In Blocks).......................................................................................................50

Controlling Address in Retroactive Play Mode ................................................................................................53

Controlling Address in Normal Mode...............................................................................................................54

Address Control Data for Each Phrase..............................................................................................................55

Addressing with the Adrrd and Adrwr Commands...........................................................................................56

Memory Allocation of Mask ROM...................................................................................................................57

Memory Map.....................................................................................................................................................58

Recording Time Length....................................................................................................................................59

Delay Time in Delayed Play Mode and Retroactive Play Mode.......................................................................61

PACKAGE DIMENSIONS................................................................................................................................62

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BLOCK DIAGRAM

PEDS87V1021-01

MS87V1021

LIN

SI SO SK

BUSY

MCU

I/F

LOUT

LPF

ADPCM

Analizer/

Synthesizer

Timing Controller

XT XT RESET

ADC

DAC

Volume

Controller

DARM 2M-Bit

LPF

AOUT

MaskROM

512k-Bit

AIN

AMON

TEST

PIN CONFIGURATION (TOP VIEW)

TEST

TEST TEST TEST TEST TEST

TEST

TEST TEST BUSY

SK SO

MVDD

1 2 3 4 5 6

7 8

9 10 11

12 13 14 15 16

32-pin plastic TSOP Type I (TSOP32-P814-K)

MGND

AGND

LIN

LOUT

AMON

AOUT

AIN

AVDD

DGND

TEST TEST

22 21

TEST

RESET

DVDD

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PIN DESCRIPTION

Pin No. Symbol I/O Description

14 SI I Inputs 8-bit command or data. 13 SO O Outputs 8-bit status or data. 12 SK I Data transfer clock for SI and SO.

15 CS I

11 BUSY O

19 18

20 RESET I

31 SG O

30 LIN I 29 LOUT O Output pin for internal OP amplifier 27 AOUT O

3-10,

21-23

28 AMON O Output pin for analog testing. Leave it unconnected. 26 AIN I Input pin for analog testing. Fix it at the GND level.

17 DVDD — 24 DGND — Digital GND pin 16 MVDD —

1 MGND — Ground pin for DRAM 25 AVDD — 32 AGND — Analog GND pin

TEST

The SK pulse is accepted w hen this pin i s “L”. The SK pulse is not accep ted when this pin is “H”.

Outputs “H” level during command execution. At that time, do not input a command from the external microcontroller.

Crystal oscillator connection pin s. When using an ex ternal cl oc k, input the clo ck

via the XT pin and le ave the XT pin unconn ected. When an external clock is u sed

in power down mode, fix the XT pin at the GND level. The device is reset when “L” level is input. When oscillation starts, set this pin to

“L” level until oscillation becomes stable, and set to “H” level after oscillation becomes stable. Data stored in the internal DRAM is cleared when “L” level is input, while data is not erased when a reset signal is input for the purpose of releasing the Pdwn1 mode.

Analog reference voltage (signal ground). Connect a 1 µF capacitor between AGND and this pin.

Inverting input pin for internal OP amplifier. The non-inverting input pin is internally connected to SG.

Output pin for playback LPF. This pin outputs playback waveforms and is connected to the speaker driving amplifier.

Testing pin. The TEST pin is fixed at the V

the GND level.

Digital power supply pin. Connect a 0.1 µF or more bypass capacitor between DGND and this pin.

Power supply pin for DRM. Connect a 0.1 µF or more by pas s c apa citor between MGND and this pin.

Analog power supply pin. Connect a 0.1 µF or more bypass capacitor between AGND and this pin.

PEDS87V1021-01

MS87V1021

level and the TEST pins are fixed at

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APPLICATION CIRCUIT EXAMPLE

MCU

MVDD DVDD AVDD

SI SO SK

RESET

BUSY

PEDS87V1021-01

MS87V1021

TEST

Voice input

OPEN

MS87V1021

LIN

LOUT

AMON

AIN

MGND DGND AGND

MSC1157

AOUT

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ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Condition Rated value Unit Power supply voltage V Pin voltage V Output shortcircuit current I Power dissipation P Operating temperature T Storage temperature T

OPR

STG

Ta = 25°C –0.5 to 4.6 V Ta = 25°C –0.5 to VDD+0.5 V Ta = 25°C 50 mA Ta = 25°C 1 W

— –20 to +70 °C — –55 to +150 °C

RECOMMENDED OPERATING CONDITIONS

(Ta= –20 to +70°C)

Parameter Symbol Min. Max. Unit Power supply voltage V

Power supply voltage GND 0 0 V “H” input voltage V “L” input voltage V Source oscillation frequency f

OSC

2.7 3.6 V

VDD–0.2 V

–0.2 0.2 V

4.096 MHz

PEDS87V1021-01

MS87V1021

(GND = 0 V)

ELECTRICAL CHARACTERISTICS

DC Characteristics

Parameter Symbol Condition Min. Typ. Max. Unit “H” output voltage V “L” output voltage V Input leakage current

(Note 1)

Input leakage current

(Note 2)

Operating current I Standby current 1 I

Standby current 2 I

LI1

LI2

DDS

DDS2

Non-measured pins are at 0 V.

When powered down, no load,

Notes: 1. Applicable to input pins excluding XT and XT.

2. Applicable to XT and XT.

IOH = –1 mA VDD–0.3 — — V IOL = +1 mA — — 0.3 V

0 V < VIN < V

0V < VIN < V

= 4.096 MHz no load — 10 15 mA

OSC

with DRAM refreshing

without DRAM refreshing

(Ta = –20 to +70°C)

–10 — 10 µA

–20 — 20 µA

——70µA

——40µA

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AC Characteristics

1. Microcontroller interface mode

Parameter Symbol Min. Typ. Max. Unit Note

RESET pulse width t RESET execution time t

Setup and hold time of SK for CS t SK pulse width “H” t SK pulse width “L” t Setup time of SI for SK rise t Hold time of SI for SK rise t Data valid time from fall of CS t Data Hi-Z time from rise of CS t Data valid time from fall of SK t BUSY rise time from rise of CS t Source oscillation duty cycle t

RST

REX

SKS

SKH

SKL

CSE

CSF

BSY

DUTY

PEDS87V1021-01

MS87V1021

(VDD = 2.7 to 3.6 V, Ta = –20° to +70°C)

= 4.096 MHz Fsam = 8.0 kHz)

OSC

1——µs1

——5ms

500 — — ns 1000 — — ns 1000 — — ns

250 — — ns

— — 200 ns — — 200 ns — — 200 ns — — 200 ns 40 50 60 %

2. BUSY time when a command is executed

Parameter Symbol Min. Max. Unit Note BUSY time after input of command t BUSY time after input of mode setting command t

BUSY time after input of Area1 command (3)

BUSY time after input of Area2 command (3)

BUSY time after input of Delay command (3)

BUSY time after input of Rec command (2)

During

BUSY time after input of

recording

Play command (2)

During pause

Normal mode t Delayed play mode

Retroactive play mode Normal mode Retroactive play mode Normal mode Delayed play mode — 65 ms 2 Retroactive play mode Normal mode Delayed play mode Retroactive play mode Delayed play mode Retroactive play mode Normal mode

(VDD = 2.7 to 3.6 V, Ta = –20 to +70°C)

= 4.096 MHz Fsam = 8.0 kHz)

OSC

MODB

AR1B

AR2B

DLYB

RECB

PLYB

— 300 µs — 300 µs

—1ms

—65ms2

—1ms

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Parameter Symbol Min. Max. Unit Note

During

BUSY time after input of Play2 command (2)

recording During

pause

Retroactive play mode

Normal mode

BUSY time after input of Stop command

After input of Stop command during pause

During ROM playback (Non-linear)

BUSY time after input of Pause command t

Retroactive

BUSY time after input of Adrrd command (2)

play mode

Normal mode — 1 ms BUSY time after input of Adrrd command (8) BUSY time after input of Adrwr command (8) t BUSY time after input of Cue/Rew command (2) t BUSY time after input of Del command (2) t BUSY time after input of Dtrw command t BUSY time after input of Bytew command t BUSY time after input of Byter command t BUSY time after input of End command t BUSY time after input of Copy command (7) t BUSY time after input of Vol command t BUSY time after input of Rply command t BUSY time after input of Status command t BUSY time after input of Nop command t

PEDS87V1021-01

MS87V1021

(VDD = 2.7 to 3.6 V, Ta = –20 to +70°C)

= 4.096 MHz Fsam = 8.0 kHz)

OSC

PLAYB

SPB

ADRB

ADWB

CRB

DELB

CPYB

—65ms2

—1ms —65ms2

—1ms

—65ms2 —300µs

—1ms —1ms —65ms2 —65ms2 —300µs —300µs —300µs —300µs —10ms

1 page

—300µs —300µs —300µs —300µs

A number in parenthesis indicates the number of bytes of each command.

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3. Status flag time when a co mmand is executed

Parameter Symbol Min. Max. Unit Note

PEDS87V1021-01

MS87V1021

(VDD = 2.7 to 3.6 V, Ta = –20 to +70°C)

= 4.096 MHz Fsam = 8.0 kHz)

OSC

Rec command to RPM bit set t Play command to RPM bit set t

During ROM playback t Play2 command to RPM bit set t Stop command to RPM bit set t

During ROM playback t STOP command (during pause) to RPM bit set t Rec command to REC bit set t

RECR

PLYR

RPLYR

PLYR

SPR

RSPR

PSPR

REC

—1ms —1ms —2ms —65ms2 —2ms —1ms —1ms —1ms

Play command to PLY bit set Delayed play mode

During recording

Retroactive play mode

PLY

—65ms2

During pausing

—1ms

Normal mode Pause command to PAUSE bit set t Pause command to PAUSE bit reset t Address control time during repeated ROM playback t

PUS

PUSR

—65ms2 — 300 µs —2ms

Oscillation stop from rise of CS after input of Pwdn1 command — 65 ms

During ROM playback — 1 ms

Oscillation stop from rise of CS after input of Pwdn2 command — 65 ms

During ROM playback

PXT

—1ms

Note 1: When powering on or releasing the power down mode, input “L” level to the RESET pin until

crystal oscillation becomes stable. Moreover, when powering on, input again “L” level to the RESET pin for more than t

to initialize the internal circuit.

RST

2: Depending on sampling frequency Fsam.

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PEDS87V1021-01

Semiconductor

MS87V1021

Analog Characteristics

= 2.7 to 3.6V,Ta = -20 to +70°C)

Parameter Symbol Condition Min. Max. Unit DA output relative error |V LPF input voltage range V OP-amp open loop gain G OP-amp input impedance R OP-amp load resistance R AOUT load resistance R

|No load — 5mV

DAE

FIN

INA

OUTA

AOUT

—1/4 × V

fIN = 0 to 4 kHz 10 dB

—1—MΩ — 100 — kΩ — 100 — kΩ

3/4 × V

Analog Input Amplifier Ciricuit

This IC contains an OP a mpl ifier with the inverti ng input pin and output pin. The analog circuit reference voltage (signal ground) is internally input as the non-inverting input. When amplification is required, adjust the amplification factor using an external resistor after constructing the inverting amplifier circuit.

FIN (max)

FIN (min)

GND

Inside LSI

LIN

R2R1

LOUT

R2 R1

The output pin, LOUT, of OP amplifier is internally input to LPF (Low Pass Filter). Adjust the gain using the external resistor so that the V

is within the accessible input voltage range V

. If VLO is over the V

FIN

, the LPF

FIN

output waveform will be distorted. The example of SCF input voltage range is shown below.

Model Supply voltage V

MS87V1021 3 V 0.75 V 2.25 V 1.5 Vp-p

SCF admissible voltage range

Min. Max.

SCF admissible input voltage

The minimum value of OP-amp load resistance is 100 kΩ. The feedback resistance R2 of inverting amplifier circuit must be larger than 100 kΩ.

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PEDS87V1021-01

Semiconductor

MS87V1021

LPF Characteristics

The MS87V1021 contains a 4-th order LPF in which the switched capacitor filter technique is adopted. The LOUT pin is internally connected to the input of LPF. The attenuation rate is –40 dB/oct. The cut-off frequency and frequency characteristics vary in proportion to sampling fre quency (Fsam). The cut-off frequency is designed to 4/10 of sampling frequency. The characteristics of LPF when Fsam = 8 kHz are shown below.

[dB]

0 –10 –20 –30 –40

–50 –60

–70 –80

100 1k 10k

[Hz]

AD, DA Converter Full Scale

Model

MS87V1021 1/4 × V

LPF characteristics (Fsam = 8.0 kHz)

AD, DA converter full scale

Min. (V) Max. (V) Amplitude (Vp-p)

(3 V)

(2.25 V)

(1.5 V)

(0.75 V)

0 V (0 V)

A value in parenthesis indicates a voltage when

is 3.0 V.

LPF admissible input voltage range

3/4 × V

AD, DA converter full scale

1/2 × V

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PEDS87V1021-01

Semiconductor

MS87V1021

NOTICE

Power Supply Connection

The power of this IC is supplied from a single power supply as shown below, which should be connected to the analog section, logic section and memory section separately.

Power source

DD MV

MGND

DD AV

AGND

Ground

DGND

If the analog section, digital section and memory section are supplied from different power sources, a latch-up may occur. Be sure to avoid the power supply connections shown below.

Power source 1

Power source 2

LSI

AVDD

MVDD

DVDD

Power source

LSI

DVDD

MVDD

AVDD

Power source 1 Power source 2

LSI

AVDD

MVDD

DVDD

Power source 1 Power source 2

LSI

MVDD

DVDD

AVDD

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PEDS87V1021-01

Semiconductor

MS87V1021

Supplementary Explanation on SG Pin

Connect a 1 µF electrolytic capacitor between the SG pin and AGND. After reset or releasing the power down mode, do recording or playback after the voltage l evel of SG pi n becom e s stable. The voltage level becomes stable at 1/2 of V

. The time to be stabilized is approximately 50 ms in case

shown below.

Inside of LSI

Approx. 20 kΩ

External circuit

SG pin

1 µF

AGND

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Semiconductor

TIMING DIAGRAMS

Serial microcontroller interface mode

[Data write operation]

PEDS87V1021-01

MS87V1021

CS (I)

SK (I)

SI (I)

SO (O)

BUSY (O)

[Data read operation]

CS (I)

SK (I)

MSB

1st byte

D6 D5 D4

Data output

Hi-Z

LSB

Data I/O disabled

MSB

2nd byte

Data input

D3 D2

SI (I)

SO (O)

BUSY (O)

Hi-Z

Q6 Q5 Q4 Q3 Q2 Q1

MSB

LSB

Data I/O disabled

MSB

D6 D5 D4 D3 D2

Hi-Z

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Semiconductor

[Data write operation]

CS (I)

SKS

SKLtSKH

PEDS87V1021-01

MS87V1021

SKS

SK (I)

(Note) “L” level

SI (I)

SO (O)

BUSY (O)

(Note) Be sure to set SK to “L” when CS is at “H” level.

[Data read operation]

CS (I)

SKL

SKH

SK (I)

SKS

(Note) “L” level

Hi-Z

D1 LSB

SKS

(Note) “L” level

BSY

(Note) “L” level

SI (I)

SO (O)

Hi-Z

CSE

BUSY (O)

(Note) Be sure to set SK to “L” when CS is at “H” level.

D1 LSB

BSY

CSF

Hi-Z

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(2)

Semiconductor

Ready for recording with Rec command

PEDS87V1021-01

MS87V1021

Rec command (1) Rec command (2)

BUSY

Standby

Executing Rec

command (1)

Ready for playback with Play command

BUSY

Play command (1) Play command (2)

Standby

RECB

Executing Rec

command

PLYB

Standby

Executing Play

command (1)

Standby

Executing Play

command (2)

Standby

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Semiconductor

Starting recording with Start command

PEDS87V1021-01

MS87V1021

Rec command

(1)

BUSY

RPM bit

Standby

Executing Rec command (1)

Starting playback with Start command

Rec command

Standby

Executing Rec command (2)

Start command

Standby

STB

RECR

Recording

Executing Start command

BUSY

RPM bit

Play command

(1)

Standby

Play command

Executing Play command (1)

(2)

Standby Playing

Executing Play command (2)

Start command

Standby

PLYR

Executing Start command

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Semiconductor

Ending recording/playback with Stop command

PEDS87V1021-01

MS87V1021

Stop command (1)

BUSY

SPR

RPM bit

Recording/playing Stop processing

Pause of recording/playback with Pause command

Pause command

Pause command Pause command

SPB

Standby

BUSY

PAUSE

bit

Recording/playing

PUS

Executing Pause command

PUSR

Pausing Pausing

Recording/playing

Executing Pause command

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Page 20

(1)

(2)

(3)

(1)

Semiconductor

Setting voice area block with Area1 command

PEDS87V1021-01

MS87V1021

Area1

command

BUSY

Standby

Executing Area1 command (1)

Setting voice area with Area2 command

BUSY

Area2

command

Area1

command (2)

Standby Standby

Executing Area1 command (2)

Area2

command

Area1

command (3)

Standby

Area2

command

AR1B

Executing Area1 command (3)

AR2B

Standby

Executing Area2 command (1)

Standby Standby

Executing Area2 command (2)

Standby

Executing Area2 command (3)

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(1)

Semiconductor

Setting Delay value with Delay command

PEDS87V1021-01

MS87V1021

Delay

command

BUSY

Standby

Executing Delay command (1)

Deleting phrase with Del command

BUSY

Del command (1) Del command (2)

Delay

command (2)

Standby Standby

Executing Delay command (2)

Delay

command (3)

Standby

DLYB

Executing Delay command (3)

DELB

Standby

Executing Del

command

Standby

Executing Del

command (2)

Standby

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Outputting STATUS with Stat us command

PEDS87V1021-01

MS87V1021

BUSY

Status command

Standby

Executing Status

command

Status output

Standby

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command

Semiconductor

Reading recording/playback start address with Adrrd command

PEDS87V1021-01

MS87V1021

Adrrd(1) Adrrd(2)

ADRB

Stadr

[23:16]

Stadr [15:8]

Stadr [7:0]

BUSY

Standby

Standby Standby

Executing

Adrrd (1)

command

Executing

Adrrd (2)

command

Standby Standby Standby Standby Standby

Executing

Adrrd (3)

command

Executing

Adrrd (4)

command

Executing command

Reading Stadr address Reading Enadr address

Writing recording/playback start address with Adrwr command

Adrrd (5)

Enadr [23:16]

Enadr

Executing

Adrrd (6)

command

[15:8]

Executing

Adrrd (7)

command

Enadr

[7:0]

ADRB

Standby

Executing

Adrrd (8)

BUSY

Adrwr(1)

Standby

Adrwr(2)

Standby Standby

Executing

Adrwr (1)

command

Executing

Adrwr (2)

command

Stadr [23:16]

Stadr

[15:8]

Standby Standby Standby Standby Standby Standby

Executing

Adrwr (3)

command

Stadr

Executing

Adrwr (4)

command

[7:0]

Executing

Adrwr (5)

command

Enadr

[23:16]

Enadr

Executing

Adrwr (6)

command

[15:8]

Writing Stadr address Writing Enadr address

Enadr

Executing

Adrwr (7)

command

[7:0]

ADRB

Executing

Adrwr (8)

command

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Page 24

(2)

(1)

(2)

Semiconductor

Copying page data with Copy command

PEDS87V1021-01

MS87V1021

PgStart

[7:0]

Copy(1)

PgStart

[15:8]

BUSY

Standby

Standby Standby

Executing

Copy (1)

command

Executing

Copy (2)

command

Executing

Copy (3)

command

Fast forward/rewind with Cue/Rew command

Cue/

Rew(1)

Cue/

Rew

CRB

PgEnd

[15:8]

Standby Standby Standby Standby Standby

Executing

Copy (4)

command

Rew

PgEnd

[7:0]

Cue/

Target

Executing

Copy (5)

command

Rew

[15:8]

Cue/

Executing

Copy (6)

command

CRB

Target

[7:0]

CPYB

Executing

Copy (7)

command

BUSY

Fast forwarding/rewinding

(single speed)

Standby

Normal playing

Standby

Executing

Cue/Rew (1)

command

Executing

Cue/Rew (2)

command

Fast forwarding/rewinding (double speed)

Standby

Cue/Rew (1)

Standby Standby

Executing

command

Executing

Cue/Rew (2)

command

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Semiconductor

Data transfer with Dtrw command

PEDS87V1021-01

MS87V1021

Dtrw(1) Dtrw(2)

Dtrw(3) Dtrw(4)

BUSY

Executing Dtrw commandStandby

Ending Dtrw mode with End comman d

End command

Bytew(1)

Executing Bytew

Write Data

command

Byter(1)

Executing Byter

command

Read Data

Standby

BUSY

Standby

Executing End

command

Standby

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(1)

(2)

(1)

(2)

Semiconductor

Continuous ROM playback with Rply command

PEDS87V1021-01

MS87V1021

Rply

Phrase 1

Rply

Phrase 2

Rply

Phrase 3

BUSY

NAR bit

RPM bit

Voice

Playing phrase1

Playing phrase2 Playing phrase3

output

(Note)

When ROM is being continuously played, other commands than Rply command, Stop command, Vol command and Status command cannot be acceptable.

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Reset function

ESET

BUSY

Specified power supply voltage

PEDS87V1021-01

MS87V1021

RST

REX

Stable oscillationOscillation start

[Reset after powering on]

When powering on, be sure to initialize the internal circuit by inputting an “L” level pulse to the RESET pin for a specified time after the power supply voltage level reaches the specified level and oscillation becomes stable.

Power down function

ESET

BUSY

Power down

command

RST

REX

PXT

Standby

Stable oscillation

Power down

command input

Power down command

processing

Oscillation stop

Power down

Oscillation

start

Oscillation start

RESET input

Stable oscillation

Executing

RESET

Standby

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PEDS87V1021-01

Semiconductor

MS87V1021

THE COMMANDS LIST

Delayed Play Mode

Command Code Description Mode 1st Byte 01h Sets the operating mode to Delayed Play Mode. Area2

Delay 1st Byte 38h Defines the Delay time (i.e. a time la g between recordi ng and its play back).

Rec

1st Byte 39h Selects a sound data area. 2nd Byte Start2[7:0] Start Block Address; address range: 00h to FFh, by default set to: 00h 3rd Byte End2[7:0] End Block Address; address range: 00h to FFh, by default set to: FFh

The memory area start ing from the block sp ecified with the S tart2 up t o that specified with the End2 is selected. Up to 256 blocks can be selected.

Each value set with this command remains valid until you enter Reset or the Mode command to change the operating mode.

You may not set the Start2 address value that is lower than the End2 address.

2nd Byte Dly[15:8]

The value for the Dly

3rd Byte Dly[7:0]

The Delay time can be obtained with the following formula: (Dly × 250 ÷ Sampling Frequency) For more details on sett ing the Dly value, see “Delay Time in Delayed Pl ay

Mode and Retroactive Play Mode” later in this document.

1st Byte 10h Sets the LSI to record-ready state and selects the Method and Samp

values.

2nd Byte

Method[7:4] The value for the Method. Samp[3:0] The value for the Samp.

Entering the Start command following the Rec command input initiates recording, which keeps going on until the Stop command is entered.

While recording, playback will not start until the Play command is entered. If you enter the Rec command while recording and playing, the LSI stops

playing and outputs SG level from the AOUT pin. In this case, recording still goes on even after playback stops.

Voice Synthesis Algorithm Sampling Frequency

Method

Algorithm

ADPCM

1h ADPCM2

Others Prohibited

Play

1st Byte 20h Sets the LSI to play-ready state and s ele cts the Method and Samp values. 2nd Byte

Method[7:4] The value for the Method. Samp[3:0] The value for the Samp.

Entering the Play comman d while recording caus es the LSI to start playing what has been recorded the Delay time ago, with recording still going on.

For more details on the Method and Samp, see description on the Rec

command earlier in this document. Start 1st Byte 30h Starts recording/playing. Stop 1st Byte 40h Stops recording/playing.

Samp

3h 4.0kHz (fosc/1024) 4h 4.0kHz (fosc/1024) 5h 5.3kHz (fosc/768) 6h 6.4kHz (fosc/640) 7h 8.0kHz (fosc/512) 8h 8.0kHz (fosc/512) 9h 10.6kHz (fosc/384)

Others Prohibited

fosc = 4.096 MHz

Sampling Frequency

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Retroactive Play Mode (1/2)

Command Code Description

Mode 1st Byte 02h

Area2

Delay

Rec

Play

Play2

1st Byte 38h Defines the Delay time (i.e. a time to go back to the past). 2nd Byte Dly[15:8] 3rd Byte Dly[7:0]

1st Byte 01h Sets the LSI to record-ready state and selects the Method and Samp

Method[7:4] The value for the Method.2nd Byte Samp[3:0] The value for the Samp.

1st Byte 20h Sets the LSI to play-ready state and selects the Method and Samp

Method[7:4] The value for the Method.2nd Byte Samp[3:0] The value for the Samp.

1st Byte 21h Sets the LSI to repeat-play-ready state and selects the Method and

2nd Byte

Method[7:4] The value for the Method. Samp[3:0] The value for the Samp.

Sets the operating mode to Retroactive Play Mode. (Cue/Rewind function available)

The memory area starting from the block specified with the Start2 up to that specified with the End2 is selected. Up to 256 blocks can be selected.

Each value set with this command r ema ins vali d until you enter Reset or the Mode command to change the operating mode.

You may not set the Start2 address value that is lower than the End2 address.

The value for the Dly

Use this command to set the Delay time, that is the time length going back to the past from the time when the Play or Play2 command is entered.

The Delay time can be obtained with the following formula: (Dly × 250 ÷ Sampling Frequency) For more details on setting the Dly value, see “Delay Time in Delayed

Play Mode and Retroactive Play Mode” later in this document.

values.

For more details on the Method and Samp, see description on the Rec command in Delayed Play Mode earlier in this document.

values.

Entering the Play command while recording causes the LSI to play on ce from what was recorded the Delay tim e ago up to the tim e when the Pl ay command is entered. In this case, recording stops.

For more details on setting the Dly value, see “Delay Time in Delayed Play Mode and Retroactive Play Mode” later in this document.

Samp values.

Entering the Play2 command while recording causes the LSI to repeat playing from what was recorded the Delay time ago up to the time when the command is entered. In this case, recording stops.

For more details on setting the Dly value, see “Delay Time in Delayed Play Mode and Retroactive Play Mode” later in this document.

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Retroactive Play Mode (2/2)

Command Code Description

Adrrd

Adrwr

Stop 1st Byte 40h Stops recording or playing in Retroactive Play Mode.

1st Byte 51h

2nd Byte 00h Set this to “00h”.

3rd Byte Stadr[23:16](O) 4th Byte Stadr[15:8](O) 5th Byte Stadr[7:0](O) 6th Byte Enadr[23:16](O) 7th Byte Enadr[15:8](O) 8th Byte Enadr[7:0](O)

1st Byte 50h Use this command to write the Start and End address values of the

2nd Byte 00h Set this to “00h”.

3rd Byte Stadr[23:16] 4th Byte Stadr[15:8] 5th Byte Stadr[7:0] 6th Byte Enadr[23:16] 7th Byte Enadr[15:8] 8th Byte Enadr[7:0]

1st Byte 41h Pauses recording or playing.Pause

1st Byte 30h Starts recording or playing in Retroactive Play Mode.Start

Use this command to read the Start and End address values of the recorded data.

Outputs the start-record address (in serial from the SO pin).

Outputs the end-record address (in serial from the SO pin).

You need to know the exact address where sound data is stored to play the data again in Retroactive Play Mode after record/play operation in the mode is complete. T his command allow s you to read the start-record and end-record addresses.

playback data.

The value for the start-play address. You need to set the lower 7 bits to “0”.

The value for the end-play address. You need to set the lower 7 bits to “1”.

You need to specify the address where sound data is stored to play the data again in Retroactive Play Mode after record/play operation in the mode is complete. This command enables you to write the start-play and end-play addresses. Normally you specify the addresses that you read by using the Adrrd command.

Re-entering the command resets pause state and resumes the earlier operation.

Entering the Start command foll owing the Rec co mmand cause s the LSI to start recording in Retroactive Play mode. Meanwhile, entering the Start command following th e Play 1 or Pl ay2 co mmand causes the LSI to start playing, looking up address informatio n on the internal Stadr /Enadr register that contains the record-start and record-end addresses.

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Normal Mode (1/2)

Command Code Description

Mode 1st Byte 03h

Area1

Area2

Rec

Play

Play2

1st Byte 36h Selects an area for address control and sound data. 2nd Byte Start1[7:0] Start Block Address; address range: 00h to FFh, by default set to: 00h 3rd Byte End1[7:0] End Block Address; address range: 00h to FFh, by default set to: FFh

1st Byte 10h

2nd Byte

1st Byte 20h Sets the LSI to one-time-play-ready state and selects a phrase to be

2nd Byte Phrase[7:0] The value for the Phrase. Range: 01h to FFh

1st Byte 21h Sets the LSI to repeat-play-ready state and selects a phrase to be

2nd Byte Phrase[7:0] The value for the Phrase. Range: (01h to FFh)

Method[7:4] The value for the Method. Samp[3:0] The value for the Samp.

Sets the operating mode to Normal Play Mode. (Cue/Rew function available)

The memory area ranging from the block specified with the Start1 up to that specified with the End1 is selected for storing both address control and sound data. Up to 256 blocks can be selected.

Each value set with this command remains valid until you enter Reset. The Area1 command is valid in Normal Play Mode only.

You may not set the Start1 address value that is lower than the End1 address.

This command is used to select a sound data area within the memory area defined by using the Area1 command. The area ranging from the block specified with the Start2 up to that specified with the End2 is selected.

Each value set with this command r ema ins valid until you enter Reset or the Mode command to change the operating mode.

The first 2 blocks (02h; 16 pages) of the memory area selected by the Area1 command are automatically assigned to the Addres s Control Data Area. Therefore, blocks you can actually s ele ct as Sound Data Area are the third block and there after ( the val ue for th e Start 1 + 02h). T he v alues defined by the Start1, Start2 and End1, End2 must satisfy the following formula:

Start2 ≥ Start1 + 02h; End2 ≤ End1

For more details, see “Contr olli ng addr es ses in Normal Play Mode” later in this document.

Note: You may not set the Start2 address value that is lower than the

End2 address.

Sets the LSI to record-ready state and selects the Method and Samp values.

For more details on the Method and Samp, see description on the Rec command in Delayed Play Mode earlier in this document.

played.

For playback the LSI use s the M ethod and Sa mp values set w ith the Rec command.

played.

For playback the LSI use s the M ethod and Sa mp values set w ith the Rec command.

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Normal Mode (2/2)

Command Code Description

Adrrd

Adrwr

Del

Start 2nd Byte Phrase[7:0] Starts recording or playing. Stop 1st Byte 40h Stops recording or playing.

1st Byte 51h

2nd Byte Phrase[7:0] The value for the Phrase. Range: 01h to FFh 3rd Byte 4th Byte 5th Byte

6th Byte 7th Byte 8th Byte

1st Byte 50h Use this command to write the Start and End address values of the

2nd Byte Phrase[7:0] The value for the Phrase. Range: 01h to FFh 3rd Byte 4th Byte 5th Byte 6th Byte 7th Byte 8th Byte

1st Byte 70h Deletes the specified phrase(s). 2nd Byte Phrase[7:0] The value for the Phrase. Range: 01h to FFh

1st Byte 41h Pauses recording or playing.Pause

Stadr[23:16](O) Stadr[15:8] (O) Stadr[7:0] (O)

Enadr[23:16](O) Enadr[15:8](O) Enadr[7:0](O)

Stadr[23:16] Stadr[15:8] Stadr[7:0]

Enadr[23:16] Enadr[15:8] Enadr[7:0]

Use this command to read the Start and End address values of the specified phrase.

Outputs the Start Address (in serial from the SO pin).

Outputs the End Address (in serial from the SO pin).

This command all ows y ou to re ad th e Star t Addr ess and End A ddress of the phrase specified.

specified phrase.

The value for the Start Address. You need to set the lower 7 bits to “0”.

The value for the End Address. You need to set the lower 7 bits to “1”.

With this command you can define a phrase and the Start and End addresses of the phrase. Addressing is in Pages. You should specify the page's top address (the lower 7 bits = 0) for the Start Address, while the page's end address (the lower 7 bits = 1) for the End Address.

If you specify Stadr = Enadr, the LSI performs endless (loop) recording. Note: You may not spe cify the Start a ddres s value that is lar ger than the

End address.

If you specify “00h” for the Phrase, all phrase data will be erased.

Re-entering the command resets pause state and resumes the earlier operation.

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Other Commands Common in All Modes (1 /2)

Command Code Description Nop 1st Byte 00h Represents “No Operation”. The command is ignored. Dtrw

Byter

End 1st Byte 63h Use this command to end Dtrw mode. Pdwn1 1st Byte 80h Use this command to let the LSI enter power-down state.

Pdwn2 1st Byte 88h Use this command to let the LSI enter power-down state.

Test 1st Byte F0h The LSI test command. Do not enter the command. Rply

Vol

1st Byte 60h Use this command to make an access to the on-chip DRAM or Mask

ROM. 2nd Byte 3rd Byte 4th Byte

Adr[23:16] Adr[15:8] Adr[7:0]

Specify the head address at which you want to start reading or writing.

You can’t access to DRA M and M ask ROM simult aneous ly. If y ou w ant to

access to the other memory address, you need to enter the End

command to end Dtrw mode once, and then set up the new address by

using the Dtrw command again. 1st Byte 61h Use this command to write data to the on-chip DRAM.Bytew 2nd Byte Data[7:0] Writing data.

After writing data is complete, the address pointer for writing is

incremented by one. When the last address of the DRAM is reached, the

next address automatically returns to the top address of the DRAM. 1st Byte 62h Use this command to read data from the on-die DRAM or Mask ROM. 2nd Byte Data[7:0] Reading data (in serial from the SO pin).

After reading data is complete, the address pointer for reading is

incremented by one. When the la st address of the DR AM or Mask ROM is

reached, the next address automatically returns to the top address of

each memory.

The on-chip DRAM enters self-refresh mode to preserve all the stored

data.

Data on the DRAM will be lost.

1st Byte 24h Use this command to play Mask ROM data. 2nd Byte Phrase[7:0] Sets ROM phrase value.

The Mask ROM Phrase values are independently controlled, separately

from the Phrase values for DRAM recording. 1st Byte 28h Use this command to set up a volume level. 2nd Byte Vol[7:0]

The default value for the Vol is “0h”.

Vol values and Attenuation

Vol

ttenuation 0h 0 dB 4h –12 dB 1h –3 dB 5h –15 dB 2h –6 dB 6h –18 dB 3h –9 dB 7h –21 dB

Vol

ttenuation

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Semiconductor

Other Commands Common in All Modes (2 /2)

Command Code Description

Copy

1st Byte 68h Use this command to move data in Pages. 2nd Byte 3rd Byte 4th Byte 5th Byte

PgStart[15:8] PgStart[7:0] PgEnd[15:8] PgEnd[7:0]

Enter the top address of the page where the data you want to move is stored.

Enter the last address of the page where the data you want to move is stored.

PEDS87V1021-01

MS87V1021

6th Byte 7th Byte

Target [15:8] Target [7:0]

Enter the top address of the starting page to which you want to move the data.

The data from the page specified with the PgStart to the page specified with the PgEnd is moved to the pages start ing from the page sp ecified w ith the Target.

Status 1st Byte FFh Reads LSI’s status.

2nd Byte Status[7:0](O) Outputs the LSI’s status signals. (in serial from the SO pin)

Bit

7 PAUSE 6PLY 5REC 4RPM

3NAR

2 1 0

Status Bit Function

Name

Outputs “H” during pausing. Outputs “H” during playing. Outputs “H” during recording. Outputs “L” while processing re cordin g or playing

data. Outputs "H" while the ADPCM unit is ready. Outputs “H” when the LSI gets ready to accept the

next phrase data while pla ying Mask ROM data. No function.

No function. No function.

Description

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—

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—

——A

—

Semiconductor

MS87V1021

Fast Forward/Rewind Playback (Valid only in Retroactive Play mode and Normal Mode)

Command Code Description Cue/Rew

Use this command, while playing, to start Fast Forward or Rewinding

1st Byte 23h Start fast forward or rewing playback 2nd Byte

Unit[7:4] Sets Unit value Speed[3:0] Sets Speed value

playback from the point that is currently played. When you want to get the speed back to normal X1 play, execute the Cue/Rew command again with the Speed value of “0”. The Unit vlaue is ignored in this operation.

Unit Function

Unit Description

By unit of 1,024 bits

By unit of 2,0484 bits

By unit of 4,0964 bits

By unit of 8,192 bits

By unit of 16,384 bits

Speed Function

Speed Description Speed Description

0 FF at X1 speed 8 1

FF at X1.25 speed

FF at X1.5 speed

FF at X2 speed

FF at X3 speed

FF at X4 speed

Rewind at X1 speed

Rewind at X1.25 speed

Rewind at X1.5 speed

Rewind at X2 speed

Rewind at X3 speed

Rewind at X4 speed

Combinations of Units and Speeds

Speed

012345

Unit

0X1 1 X1.25 2X1.5 3X2 4X3 5X4 8X1 9 X1.25

X1.5 BX2 CX3 DX4

The combination of the Unit value and the Speed value affects playback sound. Therefore, choose a proper combination of the two values depending on the type of sound to be played. The Fast Forward/Rewind Play function is available only in Retroactiv e Play M ode and Normal mo de. If you use this function, you should not use the Block address FFh.

Note: The following restrictions apply to this function:

• The size of the sound data area must be 128 pages (i.e. 16 blocks) or more.

• You may not use the block address FFh.

• The Cue/Rew command is unavailable for playback after an endless

recording session or repeat play by using the Play2 command.

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FLOWCHARTS

Delayed Play Mode

PEDS87V1021-01

MS87V1021

Start

[Select operating

mode]

[Select voice area]

[Set Delay time]

[Set to recording state]

[Start recording]

[Start playback]

Mode

command

Area2

command

Dly

command

Rec

command

Start

command

End ?

Play ?

Play

command

Stop playing ?

Rec

command

Send Mode command (01h) Select Delay mode

Send Area2 command Send Start2 [7:0] Send End2 [7:0]

Send Dly command (38h) Send Dly [15:8] Send Dly [7:0]

Send Rec command (10h) Send Method [7:4]/Samp [3:0]

Send Start command (30h)

Send Play command (20h) Send Method [7:4]/Samp [3:0] (Note) The play mode is maintained until Stop command is input.

(Note) When Play command is issued during recording, the Method/Samp value of Rec command has priority.

[Stop recording/playback]

Stop

command

End

Send Stop command (40h)

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PEDS87V1021-01

Semiconductor

MS87V1021

Retroactive Play Mode (1)

Shown below is the flowchart in which playback starts by issuing the Play or Play2 command during recording. When playing the recorded voice, see the flowchart on the next page.

Start

[Select operating mode]

[Select voice area]

[Set Delay time]

[Set to recording status]

[Start recording]

[Start one time playback] or [Start repeat playback]

Mode

command

Area 2

command

Dly

command

Rec

command

Start

command

Play ?

Play or Play2

command

Send Mode command (02h) Select Retroactive play mode

Send Area2 command (39h) Send Start2 [7:0] Send End2 [7:0]

Send Dly command (38h) Send Dly [15:8] Send Dly [7:0]

Send Rec command (10h) Send Method [7:4]/Samp [3:0]

Send Start command (30h)

Send Play command (20h) or Play2 command (21h) Send Method [7:4]/Samp [3:0] (Note) Recording stops and repeat playback starts.

[Start playback after fast forwarding/rewinding]

[Stop repeat playback]

Send Stop command (40h)

Cue or Rew ?

Cue/Rew

command

End ?

Stop

command

End

(Note) When Play or Play2 command isissued during

recording, the Method/Samp value of Rec command has priority.

Send Cue/Rew command (23h) Send Unit [7:4]/Speed [3:0]

(Caution) Note the following when playing the recorded voice in Retroactive play mode after playback in other modes such as Delayed play mode and Normal playb mode. The recording address information on playback in Retroactive play mode is not maintained when the mode is moved to other mode. Therefore, be sure to read the recording address information with Adrrd command before moving to other mode. When doing playback, write the recording address information as the playback address information with Adrwr command.

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PEDS87V1021-01

Semiconductor

MS87V1021

Retroactive Play Mode (2)

Shown below is the flowchart in which the voice that was recorded in Repeat playback mode is played later.

Start

[Select operation mode]

[Select voice area]

[Set Delay time]

[Read recording address

information]

[Write playback address

information]

[Set to one time playback

status]

[Set to repeat playback statu s]

Mode

command

Area2

command

Dly

command

Adrrd

command

Adrwr

command

Play or Play2

command

Send Mode command (02h) Select Retroactive play mode

Send Area2 command (39h) Send Start2 [7:0] Send End2 [7:0]

Send Dly command (38h) Send Dly [15:8] Send Dly [7:0]

Send Adrrd command (51h) Send (00h) Receive Stadr [23:16], Stadr [15:8], Stadr [7:0] Receive Enadr [23:16], Enadr [15:8], Enadr [7:0]

Send Adrrd command (50h) Send (00h) Send Stadr [23:16], Stadr [15:8], Stadr [7:0] (Lower 7 bits Stadr [6:0] are “0”) Send Enadr [23:16], Enadr [15:8], Enadr [7:0] (Lower 7 bits Enadr [6:0] are “1”)

Send Play command (20h) or Play2 command (21h) Send Method [7:4]/Samp [3:0]

[Start playback]

[Fast forwarding/ rewinding starts]

[Stop playback] Send Stop command (40h)

Start

command

Cue/Rew ?

Cue/Rew

command

End ?

Stop

command

End

Send Start command (30h)

Send Cue/Rew command (23h) Send Unit [7:4]/Speed [3:0]

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Recording in Normal Mode

PEDS87V1021-01

MS87V1021

Start

[Select operating mode]

[Select voice area block]

[Select voice area]

[Write record ing addr ess

information]

[Set to recording status]

[Start recording]

Mode

command

Area1

command

Area2

command

Adrwr

command

Rec

command

Start

command

Recording

finished ?

Send Mode command (03h) Select Normal mode

Send Area1 command (36h) Send Start1 [7:0] Send End1 [7:0]

Send Area2 command (39h) Send Start2 [7:0] Send End2 [7:0]

Send Rec command (10h) Send Method [7:4]/Samp [3:0]

Send Start command (30h)

RPM bit = “1”

[End recording]

N RPM bit = “0”

End

recording ?

Stop

command

End

Send Stop command (40h)

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Playback in Normal Mode

PEDS87V1021-01

MS87V1021

Start

[Select operating mode]

[Select voice area block]

[Select voice area]

[Set to playback status]

[Start playback]

Mode

command

Area1

command

Area2

command

Play

command

Start

command

Playback

finished ?

N RPM bit = “0”

End playback ?

Send Mode command (03h) Select Normal mode

Send Area1 command (36h) Send Start1 [7:0] Send End1 [7:0]

Send Area2 command (39h) Send Start2 [7:0] Send End2 [7:0]

Send Play command (20h) Send Phrase [7:0]

Send Start command (30h)

RPM bit = “1”

[Start playback after fast forwarding/rewinding]

[End playback]

Cue/Rew ?

Cue/Rew

command

Stop

command

End

Send Cue/Rew command (23h) Send Unit [7:4]/Speed [3:0]

Send Stop command (40h)

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Dtrw Command

PEDS87V1021-01

MS87V1021

Start

[Select operating mode]

Dtrw

command

Continue Dtrw ?

Write data ?

Bytew

command

[Set the top address of DRAM or ROM to be accessed] Send Dtrw command (60h) Send Adr [23:16], Adr [15:8], Adr [7:0]

[Write data to DRAM] Send Bytew command (61h) Send Data [7:0]

Byter

command

[Read data from DRAM, ROM] Send Byter command (62h) Receive Data [7:0]

End

command

End

[End of access to DRAM, ROM] Receive End command (63h)

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Semiconductor

STATUS TRANSITION DIAGRAM

Area1: Select a voice data management area (Normal mode). Area2: Select a voice data storage area. Adrwr: Input a phrase recor d ing/ pl ayback address (Retroactive m ode, Normal m ode). Adrrd: Output a phrase recording/playback address (Retroactive m ode, Normal m ode).

Mode: Select a mode. Delay: Set to a Dly volume. Rec: Set to a recording status. Play: Set to a pla yback status. Play2:Set to repeat-playready status. Vol: Select a volume. Del: Del ete phrase dat a. Copy: Copy page data. Status: Output a status signal.

Power down

Input RESET pulse.

Byter: Start reading data

Pwdn1: Power do wn (data is retained)

Pwdn2: Power do wn (data is not retained)

Waiting for com man d

Dtrw : Read/write data

Byte data

reading

Reading/writing dat a

PEDS87V1021-01

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Byte data

writing

Bytew: Start writi ng dat a

End : End reading/writing data

Vol: Set a volum e Status: Output a status signal

Rec: Stop playback (in Delayed play mode)

Playback is pausing

Vol: Set a volum e Status: Output a status signal

Stop: Stop recording/playback

Mode=01h

peration in Delaye

play mode

Play: Re-start

back

Stop: Stop recording/playback

Start: Start recording/playback

Recording/playback in

each mode

Mode=02h

Operation in Retroact iv e

Mode=03h

Stop: Stop recording/playback

Vol: Set a volum e Status: Output a status signal

play mode

Pausing

Pause: Pause/resume

Stop: Stop ROM playback

Rply: Start ROM playback

Continuous

phrase playback

Recording/playback in

Normal mode

Playback after Cue/ Re w

Stop: Stop playback

ROM playback

Cue/Rew: Fast forwarding/rewinding

Pause: Pause/resume

Pausing

Rply: Start ROM playback

Vol: Set a volum e Status: Output a status signal

Vol: Set a volum e Status : Output a status signal

Pause: Pause/resume

Pausing

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SUMMARY OF OPERATING MODES AND FUNCTIONS

Delayed Play Mode

Delayed Play is a unique operational mode that enables you to hear what has been recorded several seconds ago while the LSI keeps on recording current sound. As shown in th e figure below, while the LSI keeps on recording in endless circular motion by returning to the top address of the DRAM’s area specified with the Area2 command, it simultaneously plays what has been recorded earlier with a time lag defined with the Delay command. Adding this function to a conventional recording system like cassette tape recorder enables you to record sound in the past to such other media as a cassette tape.

In Retroactive Play Mode or Normal Mode, you cannot play what has been recorded in Delayed Play Mode.

Returning to the top address of the area

Recording area on DRAM

Play

Record

Delay Time (Time lag between Recording and Playing)

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Retroactive Play Mode

Retroactive P la y is ano the r uni que a nd ha nd y ope rat ional mode that e nab les you to hear what you ha ve missed a short period ago. While you let the LSI continue recording in endless circular motion to the memory’s area specified with the Area2 command, you can issu e the Play or Play2 command to h ear what you have missed, going back to earlier data that the LSI has s tored so far. This enables y ou to record soun d in th e pas t retroactively, w hich differentiate your application from so called “Voice Reminder” type of applications. The Delay time, that is a time length to go back to the past, can be defined by using the Delay command. In addition, the LSI supports Cue/Rewind function that has been unavailable with conventional ADPCM record/play chips. This provides you with faster search capability among recorded messages.

Record

Record operation goes on until the Play or Play2 command is issued

Issuing the Play or Play2 command

• One-time Playback with the Play command

Play

Delay Time

Time length to go back to

ast

the

• Continuous Repeat Playback with the Play2 command

Play

Delay Time

Time length to go back to

ast

the

Issuing the Play or Play2 command during recording operation causes the LSI to stop recording.

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Normal Mode

MS87V1021 also provides Normal Mode where you can record or play to/from the on-chip DRAM as with a conventional solid-state recorder. You can readily build a “Voice Reminder” application around this microchip that enables up to 255-phrase recording and playing. In addition, the LSI supports Cue/Rewind function that has been unavailable with conventional ADPCM record/play chips. T his provides you with faster search capability among recorded messages.

DRAM’s Sound Data Storage Area

1Phrase 2Phrase

3Phrase

254Phrase

255Phrase

You can flexibly adjust the size of each phrase area according to your recording time requirement.

Assume that you already have Phrase1 th roug h Phras e3 recorded. Now, you want to erase Phrase2 an d Ph rase 3 s o that you can create new Phrase2 with larger memory space. To do so, follow the steps below:

Phrase1

Erase Phrase2 and Phrase3 by using the Del command.

Phrase1

Record to Phrase2.

Phrase1

Phrase2 Phrase3

Phrase2

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Fast Forward/Rewind Function (C ue/Rew)

Fast Forward/Rewind playback function is a unique new feature that enables you to do speed hearing across multiple phrases. This function is available in Retroactive Play Mode and Normal Mode only. Fast Forward and Rewind playback is performed by culling recorded ADPCM data. You can optimize speedy hearing quality for source sound types by selecting appropriate culling interval and playback speed.

The figure below shows an example operations performing Fast Forward/Rewind playback in the following order; Normal Play

⇒

X2 Fast Forward ⇒ X4 Rewind ⇒ X1 Play

Start

Normal Play *1

X2 Fast Forward X4 Rewind X1 Play *2

: Represents sound data to be played after thinning out in FF/Rewind playback.

*1: Playback by using the Play command *2: Playback at X1 Speed by using the Cue/Rew command.

12345

End

You need to issue the Cue/Rew command, setting the Speed value to “0”, if you want to return to normal X1 speed playback after performing Cue/Rew operation.

[Restrictions on Fast Forward/Rewind Playback Function ]

(1) If you plan to use Cue/Rew function in your appli cation, you should not use blo ck addr ess FFh for storing

sound data in Retroactive Play Mode and Normal Mode. If you intend not to use the function, you can use all blocks including FFh.

(2) You cannot use Cue/Rew function in Normal mode when the Record_s tart address is equal to the Record_en d

address. (When voices are played after endless recording)

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Copy Command

You can use the Copy command to move recorded data that you want to keep to another location on the memory. Moving specific data to another location enables you to secure contiguous open memory space for longer recording time. Be sure to select a destination area not overlapping with a sou rce data area. The m inimum unit for copying data is in pages.

Page

Executing the Copy command

1 2 3 4 5

123 5

You can also move data in the Retroactive Play Mode area to the Normal Mode area.

Normal Mode Area

Address

Retroactive Play Mode Area

Sound Data

Start

End

Copy sound data with the Copy command. Set up Start_new and End_new addresses, Method, and Samp information so as to control a new phrase.

Retroactive Play Mode Area

Sound Data

Copy command

Retroactive Play Mode Area

Sound Data

Address

sound Data

New Phrase

(ex. Phrase=1)

Copied

sound Data

Start_new End_new

Normal Mode Area

Copied

Normal Mode Area

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[Defining the Method, Samp and address information]

To let the LSI to recognize a copied sound data as a new phrase, you need to define address control information that includes the Method, Samp, Start Address and End Address. Such information should be entered to an addres s control data area for each phrase. For more details on address control data area, see "Controlling addresses in Normal Play Mode". To define address control information, follow the steps below:

1. Defining the Method and Samp Use the Bytew command to write the data. (Ex.)Where;

Phrase 1, Method = 01h, Samp = 08h and Start Address for Area1 = 00h

(1) Specifying the Start Address

Enter the DTRW command; 2nd Byte: 00h, 3rd Byte: 00h, 4th Byte: 08h

(2) Writing the data

Enter the Bytew command; 2nd Byte: 18h • Writing the Method and Samp data

(3) Ending Write Mode

Enter the End command

2. Defining the Start Address and End Address Use the Adrwr command to define the data for each phrase. (Ex.)Where;

Phrase 1, Stadr = 000800h and Enadr = 010000h

Enter the Adrwr command; 2nd Byte: 01h, 3rd Byte: 00h, 4th Byte: 80h

5th Byte: 00h, 6th Byte: 01h, 7th Byte: 00h, 8th Byte: 00h

[Copying separated data]

To copy two data that were separately recorded in two portions of a Retroactive Play Mode area as shown below, issue the Copy command twice, first for the former data and second for the latter data.

Retroactive Play Mode area

Recorded

data

Address

The latter

recorded data

End

Retroactive Play Mode area Normal Mode area

Recorded

Start

The former

recorded data

data

recorded data

Normal Mode area

New pharase

The former

The latter

recorded data

Copy command

Start_new

End_new

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MEMORY ALLOCATION

Storing Sound Data to DRAM (In Pages)

The on-die 2-Mbit DRAM consists of 2048 pages, 1024 bits for each page. The firs t 24- bit mem ory space of each page is allocated for storing ADPCM intermediate data and the remaining 1000-bit space for storing ADPCM (sound) data. For additional information on data structures of pages allocated for address control in Normal Mode, see “Controlling Addresses of Sound Data in Normal Mode” later in this document.

1024 bit

24 bit

Page 0 000h to 07Fh Page 1 080h to 0FFh

Page 2 100h to 17Fh Page 3 180h to 1FFh

1000 bit

DRAM Address *

ADPCM Data

Page 2042 Page 2043 Page 2044 Page 2045 Page 2046 Page 2047

ADPCM Intermediate Data

Pages on DRAM

Note: “DRAM Address” means the addresses used with the Adrrd and Adrwr commands,

i.e. Stadr[23:0] and Enadr[23:0].

3FD00 to 3FD7Fh 3FD80 to 3FDFFh 3FE00 to 3FE7Fh 3FE80 to 3FEFFh 3FF00 to 3FF7Fh 3FF80 to 3FFFFh

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Storing Sound Data to DRAM (In Blocks)

A block is a memory space unit that is equivalent to 1/256 of the entire DRAM capacity. The memory space for a block can be obtained by the following formula:

1 Block = 2,097,152 Bits/256 = 8,192 Bits (Equals to 8 Pages)

Block Address (Note)

Page 1 (1024 Bits)

00h

1 Block

Block 1

256 Blocks

Page 8 (1024 Bits)

01h

Block 2

02h

FFh

Block 256

Note: Block address is a value for the Start1 / Start2 and End1/End2 when you specify a mem ory

area using the Area1 or Area2 command.

Each block is assigned to a specific memory address. The following table shows block addresses and its corresponding memory addresses at the top of each block. For blocks not appearing in the table below, you can g et the top address value of a given block by incrementing 400h for each single block.

DRAM Memory Address at the top of Blocks

Block Address DRAM Memory Address

00h 000000h 01h 000400h 02h 000800h 04h 001000h 08h 002000h 10h 004000h 20h 008000h 40h 010000h 80h 020000h FFh 03FC00h

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You need to assign a separate memory space area for each playback mode. Delayed Play Mode, Retroactive Play Mode and Normal Mode must have their own memory space, when us ed in a single application . Each mode cann ot share any memory space with other modes. Therefore, you need to define a proper memory area for each mode if you are required to use more than one mode in a single application.

(1) When the entire DRAM memory space is used for a single play mode

DRAM Memor y Space

Normal (or Delayed Play/Retroactive Play) Mode Only

(2) When the DRAM memory space is divided into two areas (For Normal and Retroactive Play Mode

in this example)

DRAM Memor y Space

Normal Mode Area

Retroactive Play Mode Area

(3) When the DRAM memory space is divided into three areas

DRAM Memor y Space

Normal Mode Area

Retroactive Play

Mode Area

Delayed Play Mode

Area

You can move, in pages, sound data recorded in Retroactive Play Mode to the Normal Mode area by using the Copy command. This enables you to control phrases recorded in Retroactive Play Mode in Normal Mode. Sound data recorded in Delayed Play Mode cannot be moved to the Retroactive Play Mode area or Normal Mode area. Data in the Normal Mode area neither can be moved to the Retroactive Play Mode area.

[Note 1 on Selecting Blocks for more than one mode]

Be sure to select blocks not overlapping with the area specified for other modes, when you select blocks for multiple modes. When you define an area for each mode, you can define only one area for a specific mode. So, as shown in the above three figure, you can define up to three areas for three modes.

Normal Mode Area

Retroactive Play Mode Area

Normal Mode

Retroactive Play Mode

No Overlapping Allowed

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[Note 2 on Selecting Blocks for more than one mode]

As shown in the following example, you cannot select blocks across the end address of the DRAM when you define an area with the Area1 or Area2 command. Therefore, the Start1, 2 and End1, 2 values must always satisfy Start1, 2 < End1, 2.

End

Normal Mode Normal Mode

DRAM Memor y Space

Area where Start > End is Not Allowed

Start

[Re-defining an Area after Mode Switch]

When you switch an operation mode from one to another, you should redefine the area by using the Area2 command.

(1) Normal Mode ⇒ Retroactive Play Mode ⇒ Normal Mode (Mode Switched)

Set up Normal Mode

Issuing the Area1 and

Area2 commands

Set up Repeat Mode

Issuing the Area2

commands

Set up Normal Mode

Issuing the Area1 and

Area2 commands

(2) Normal Mode ⇒ Power Down ⇒ Normal Mode

Set up Normal Mode

Issuing the Area1 and

Area2 commands

If the mode remains unchan ged befor e and af ter Pow er Down, mode settin gs remains unchanged.

The values set with the Area1 command in Normal Mode remain unchanged until Reset signal is entered.

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Controlling Addresses in Retroactive Play Mo de

In Retroactive Play Mode, four registers are defined within the internal Record/Play register. Those are the record/play_start address (Stadr), the record/play_end address (Enadr), the sampling frequency (Samp) and the method (Method). Use the Adrrd command to read the Stadr/Enadr value, an d the Adrwr comm and to write the Stadr/Enadr v alue. In addition, you need to set up a sampling frequency a nd an ADPCM algorit hm (Method) by using the Rec or P lay command.

The Internal Record/Play Registers

Stadr (24 bits)

Enadr (24 bits)

Samp (4 bits)

Method (4 bits)

[Note on Issuing the Adrrd or Adrwr command]

In Retroactive Play Mode, multiple phrasing is not allowed by its design. However, the recorded data is processed as “Phrase = 0” internally. Therefore, be sure to set the second byte to “00h” as you issue the Adrrd or Adrwr command.

[Note on Issuing the Stadr and Enadr command s]

Sound data has ADPCM intermediate data in each page. By the nature of ADPCM, playback must start from the top address of a page, otherwise playback cannot be performed properly. Therefore, when you define the Stadr value with the Adrwr command, be sure to set the lower 7-bit to “0” (i.e. specifying a page’s top address). Similarly, set the lower 7-bit to “1” when you define the Enadr. (A single page on the DRAM is 1024 bits.) For the details, see “Storing Sound Data to DRAM (In Blocks)” and “Addressing with the Adrrd and Adrwr Commands” se ctions.

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Controlling Addresses in Normal Mode

In Normal Mode, the address control data area and the sound data area are allocated within the blocks selected by using the Area1 and Area2 commands. The address control data area is for storing address control data for up to 255 phrases, while th e soun d data area is for storing A DPC M in termedi at e dat a an d A DPC M dat a, as des cri bed i n “Storing Sound Data to DRAM”, earlier in this document. 1 to 255 phrase value is available. Phrase = 0 is unavailable in Normal Mode becau se it is us ed only in R etroactive Play Mode. For further details on address con trol data for each phrase, s ee “Address Control Data for Each Phrase”, later in this document.

Relative Address

Start1

Page Address Specified Page + 0 Address Control Data (Phrase 1 to 15) 0h to 7Fh Specified Page + 1 Address Control Data (Phrase 16 to 31) 80h to FFh Specified Page + 2 Address Control Data (Phrase 32 to 47) 100h to 17Fh

DRAM

within the Area*

Specified Page + 14Address Control Data (Phrase 224 to 239) 700h to 77Fh Specified Page + 15Address Control Data (Phrase 240 to 255) 780h to 7FFh

Start2

Specified Page + 16 Sound Data 800h to 87Fh Specified Page + 17 Sound Data 880h to 8FFh Specified Page + 18 Sound Data 900h to 97Fh

Blocks Specified with the Area1 Command

Sound Data Sound Data

Blocks Specified with the Area2 Command

End2End1

Sound Data

Note: Relative address means relative address value from the top address of the area defined by the

Area1 command.

[Notes on Issuing the Area Command]

As shown in the above figure, the first 2 blocks (16 pages) are assigned for storing address control data when you define an area with the Area1 command. So, with Area2 com m and, y ou need to select blocks not overlapping w ith such address control data area (with the Area commands, selecting an area in Blocks, i.e. 8-page). Therefore, the value for the Start2 of the Area2 command must be larger than the Start1 value + 16 pages. In other words, the Start1, 2 and the End1, 2 must satisfy the following:

Start2 ≥ Start1 + 02h, End2 ≤ End1 (All values within 00h to FFh range)

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Address Control Data for Each Phrase

Address Control data for each phrase consists of 8 bytes (64 bits), as shown in the following table.

Address Bit

Phrase Address

00h 00_0002

01h 00_000A Middle Start Address

(Note)

00_0000 00_0001

00_0003 00_0004 00_0005 00_0006 00_0007 00_0008 Method Samp 00_0009 Upper Start Address

00_000B Lower Start Address 00_000C Upper End Address 00_000D Middle End Address 00_000E Lower End Address 00_000F Reserved Area

7654321 0

Reserved Area

MS87V1021

00_07F8 Method Samp 00_07F9 Upper Start Address

0FFh 00_07FA Middle Start Address

00_07FB Lower Start Address

00_07FC Upper End Address 00_07FD Middle End Address

00_07FE Lower End Address 00_07FF Reserved Area

(Note) Each address means a relative address starting from the top address of Area 1.

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Addressing with the Adrrd and Adrwr Commands

In Retroactive Play Mode and Normal Mode, you can control addresses for recording and playing by using the Adrrd and Adrwr commands.

[The Adrrd Command]

In Retroactive Play Mode and Normal Mode, the Adrrd command enables you to read the DRAM’s record_start address and the record_end address. These addresses represent specific address locations on the on-die DRA M, as described in “Storing sound Data to DRAM” section earlier in this document. You can determine the address to be played based on those address information.

[The Adrwr Command]

In Retroactive Play Mode and Normal Mode, the Adrwr command enables you to specify the DRAM address at which the LSI starts to play. You can determine the st arting and ending addresses according to address information obtained by using the Adrrd command. When you define the play_start address, you need to specify the top address of the starting page. By the nature of ADPCM, playback must start from the top address of a page, otherwise playback cannot be performed properly. Similarly, you should specify the last address of the ending page when you define the end_play address.

The record_start address 00000h

Sound Data

Page

Sound Data

End recording

Playback after recording

Addressing with the Adrwr command Stadr = 00000h Enadr = 001FFh (The Enadr must be the last address of the ending page)

The play_start

Page

Sound Data

001FFh The end_play

address

[Notes on addressing]

The play_start address cannot be larger than the play_end address. Therefore, the addressing should be Stadr ≤ Eadr.

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Semiconductor

Memory Allocation of Mask ROM

The following figure illustrates the on-chip Mask ROM memory allocation.

ROM Address Mask ROM 0000h to 0007h Phrase 0 Address Data 0008h to 000Fh Phrase 1 Address Data 0010h to 0017h

PEDS87V1021-01

MS87V1021

07F0h to 07F7h Phrase 254 Address Data 07F8h to 07FFh Phrase 255 Address Data

0800h to Sound Data Area

to FFFFh Sound Data Area

The format of address control data for each phrase is identical to the on e f or the DRA M. ROM A ddres s means th e address values specified with the Stadr and Enadr, used for controlling Mask ROM phrases. Remember that these addresses are different from physical memory addresses used with the Dtrw command to make an access to the Mask ROM. (See “Memory Map” section on the following page)

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Memory Map

The figure below shows the memory map of DRAM and Mask ROM. Addresses shown in this figure represent physical addresses of each memory, which you can use with the Dtrw command.

80FFFFh

512-Kbit Mask ROM

64k-word x 8 bits

800000h

Unused

2 Mbit DRAM

256k-word x 8 bits

03FFFFh

000000h

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Recording Time Length

This section describes recording time length of the blocks selected with the Area1 and Area2 commands. A block is a memory space equal to 1/256 of 2-Mbit on- chip DRAM. The following formul a can be used to obtain the memory space per block:

Block = 2,097,152 Bits/256 = 8,192 Bits (equal to 8 Pages)

A page consists of 1024 bits, out of which a 24-bit space is allocated for storing ADPCM intermediate data. Therefore, actual usable area for storing sound data is as follows:

Actual usable area per block : 8,192 bits - 24 bits x 8 pages = 8,000 bits

You can obt ain record ing time per block with the following formula:

Where; Sampling Frequency Fsam = 8 kHz Recording time per Block: 8,000 bits / (4 bits* x 8 kHz) = Approx. 0.25 sec Note: “4 bits” represents 4-bit ADPCM.

The following table summarizes recording time length at each sampling frequency.

Sampling Frequency and Recording Time

Sampling Frequency Recording Time per Block Recording Time for Entire 2 Mbit

4.0 kHz Approx. 0.50 sec Approx. 128 sec

5.3 kHz Approx. 0.38 sec Approx. 97 sec

6.4 kHz Approx. 0.31 sec Approx. 80 sec

8.0 kHz Approx. 0.25 sec Approx. 64 sec

10.6 kHz Approx. 0.18 sec Approx. 48 sec

[Recording Time in Delayed Play Mode and Retroactive Play Mode]

In Delayed Play Mode and Re troactiv e Play Mode, th e maxim um recording t ime depends on the number of bl ocks selected with the Area2 command as all the blocks selected are allocated for storing sound data.

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[Recording Time in Normal Mode]

In Normal Mode, the area selected with the Area2 command is assigned for storing sound data, therefore the maximum recording time depends on the number of blocks included in the area. Note that the first two blocks of the area selected with the Area1 command is automatically allocated to the Address Control data area in Normal Mode. So, the maximum number of blocks usable for storing sound data (i .e. th e area that can be sel ected w ith the Area2 command) is the number of blocks selected with the Area1 command minus 2 blocks. For example,

Blocks selected with the Area1 command: Start1 = 00h; End1 = 0Fh (16 blocks) Blocks selectable with the Area2 command: Start2 = 02h; End2 = 0Fh (14 blocks) (Area for storing sound data) Where: Sampling frequency Fsam = 8 kHz; Maximum recording time: About 3.5 sec

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Delay Time in Delayed Play Mode and Retroactive Play Mode

In Delayed Play Mode and Retroactive Play Mode, you should define the Delay Time, that is a time lag between recording and its playback in the former or the time going back to the past in th e latter. Use 16-bit unsigned integer value Dly[15:8], Dly [7:0] to set up the Delay time. The following section summarizes the relationship between the Dly value you set and the actual delay time obtained in the operation.

Delay Time = Dly value x 250/Sampling Frequency

For example, with sampling frequency at 8 kHz, if you set the Dly value to 0100h, the actual delay time can be obtained by the following formula:

Delay Time = 0100h x 250/8 kHz = 8 sec

[Restriction on setting the Dly value in Delayed Play Mode and Retroactive Play Mode]

There is a certain limitation on setting the Dly value in Delayed Play Mode and Retroactive Play Mode. You cannot set up the Delay time that is equal or longer than the maximum recording time for the current mode. The LSI may not operate properly when you set up the Delay time as shown below:

Sound data area selected with the Area2 command: 00h to FFh (239 blocks, about 59.75 sec at Fsam =

8 kHz)

Dly value: 0778h Delay Time: about 59.75 sec

Therefore, the Dly value and the number of selected blocks must satisfy the following formula:

Dly value < 8 x Number of selected blocks

For the above example, the Maximum Delay time that satisfies the formula is as follows:

Dly value: 0777h < 8 x 239 blocks Delay Time: about 59.71 sec

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TSOP(1)32-P-0814-0.50-1K

Mirror finish

Package material Epoxy resin Lead frame material 42 alloy Pin treatment

Solder plating (≥5µm)

Package weight (g) 0.27 TYP.

Rev. No./Last Revised 3/Dec. 10, 1996

Semiconductor

PACKAGE DIMENSIONS

PEDS87V1021-01

MS87V1021

(Unit: mm)

Notes for Mounting the Surface Mount Type Package The surface mount type packages are very susceptible to heat in reflow mounting and humidity

absorbed in storage. Therefore, before you perf orm reflow m ountin g, co ntact Ok i’s r esponsi ble sales person f or th e pro duct name, package name, pin n umber, package code and desired m ounting conditions (reflow method, temperature and times).

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NOTICE

1. The information contained herein can change without notice owing to product and/or technical improvem ents. Before using the product, please make sure that the information being referred to is up-to-date.

2. The outline of action and examples for application circuits described herein have been chosen as an explanation for the standard action an d performan ce of the product. Wh en planning to use t he product, pleas e ensure that the external conditions are reflected in the actual circuit, assembly, and program designs.

3. When designing your product, please use our product below the specified maximum ratings and within the specified operating ranges including, but not limited to, operating voltage, power dissipation, and operating temperature.

4. Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the s pecified maximum ratings or operation outside the specified operating range.

5. Neither indemnity against nor license of a third party’s industrial and intellectual property right, etc. is granted by us in connection with the use of the product and/or t he information and draw ings contained herei n. No responsibility is assumed by us for any infringement of a third party’s right which may result from the use thereof.

6. The products listed in this document are intended for use in general electronics equipment for commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer electronics, etc.). These products are not authorized for u s e in any system or application that requ ires s pecial or enhanced quality and reliability characteristics nor in any system or applicatio n where the failure of s uch system or application may result in the loss or damage of property, or death or injury to humans. Such applications include, but are not limited to, traf fic and automotive equ ipment, safety devi ces, aerospace equipment, nuclear power control, medical equipment, and life-support systems.

7. Certain products in this document may need government approval before they can be exported to particular countries. The purchaser assumes the responsibility of determining the legality of export of these products and will take appropriate and necessary steps at their own expense for these.

8. No part of the contents contained herein may be reprinted or reproduced without our prior permission.

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