OKI MSM66P54-01, MSM66P54-02, MSM66P54-03, MSM66P54-04 Datasheet

4-1OKI SEMICONDUCTOR

MSM66P54

One-Time Programmable (OTP) Speech Synthesizer

DESCRIPTION

The MSM66P54 is a one-time-programmable (OTP) version of the MSM6654 speech synthesizer, suitable
for evaluation of the MSM6650 family and code development. This part is also suitable for applications
requiring small quantities and/or short-term delivery after code completion. The PC-based AR76-202
Speech Development System is used for speech encoding, editing, and programming of the MSM66P54.

When compared to the mask-programmed MSM6654 version, the SOP-packaged version of the
MSM66P54 is backwards compatible, while the DIP-packaged version has two extra pins for program­ming. On the DIP version, programming pins can either be cut off or left open after programming. DIP
pin spacing and location allows insertion of the MSM66P54 into an IC socket intended for the MSM6654.

To provide high-quality speech synthesis, all members of the MSM6650 family members implement
adaptive differential pulse-code modulation (ADPCM) playback, pulse-code modulation (PCM) play­back, 12-bit D/A conversion, and an on-chip -40dB/octave low-pass filter (LPF). In addition, easy-to-use
“beep” tones, a two-channel mixing function, a melody function, a fade-out function, and a random play­back function are included. Also, an on-chip edit ROM can form sentences by catenating phrases, making
external control simpler than before.

Four code versions of the MSM66P54 are available. Stand-alone or microcomputer (MCU) interface
modes can be selected by using one of the four available codes. The table below shows the code versions
available.

FEATURES

MSM66P54 Code Versions

Part No. OTP ROM Mode Interface/Standby Features

MSM66P54-01 1 Mbit MCU Interface Mode Serial Interface
MSM66P54-02 1 Mbit MCU Interface Mode Parallel Interface
MSM66P54-03 1 Mbit Standalone Mode Standby Function
MSM66P54-04 1 Mbit Standalone Mode No Standby Function

• Single-chip synthesizer

• 4-bit ADPCM or 8-bit PCM sound playback

• Melody function

• Edit ROM function

• Built-in two-channel mixing function

• Internal random playback function

• Fade-out function

• Built-in “beep” tones at 0.5, 1.0, 1.6, and 2.0 kHz

• Sampling frequency of 4.0, 5.3, 6.4, 8.0, 10.6, 12.8, 16, or
32 kHz

[1]

• Up to 127 phrases

• Internal 12-bit D/A converter

• Internal -40 dB/octave low-pass filter (LPF)

• Built-in standby function

• Selectable RC oscillation or ceramic/crystal
oscillation

• Package options include 20-pin DIP (DIP20-P-300),
24-pin SOP (SOP24-P-430-2K), or die

1. 32 kHz is not available when RC oscillation is selected

■

MSM66P54 OTP Speech Synthesizer ■––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

4-2 OKI SEMICONDUCTOR

The table below shows the additional functions available in the MSM6650 family when compared to the
family’s predecessor, the MSM637x family.

SPEECH DURATION

[1] Actual ROM area in MSM6652, MSM6653, MSM6654, MSM6655, and MSM6656 is smaller by 22 Kbits.
[2] Via external ROM only (no on-chip ROM available).
[3] OTP version.

Comparison of MSM6376 and MSM6650 Families

MSM6650 Family MSM637x Family

Control Method

Standalone mode

Microcomputer mode - parallel input

Microcomputer mode - serial input

CPU input - software control

Speech synthesis method

4-bit ADPCM or

8-bit PCM/Melody PCM

4-bit ADPCM

“Beep” tone frequency (length)

0.5, 1.0, 1.6, or 2.0 kHz

(User-specified length of variable duration)

1.0 or 2.0 kHz, (User-specified length,

fixed at either 64, 128, 250, or 500 ms)

Sampling frequency (fS)

Eight frequencies

(4.0, 5.3, 6.4, 8.0, 10.6, 12.8, 16.0, or 32.0 kHz)

Three frequencies at two oscillator frequencies

(4.0, 6.4, or 8.0 kHz with f

OSC

= 64 kHz;

16.0, 25.6, or 32.0 kHz with f

OSC

= 256 kHz)
Master clock frequency 256 kHz (RC) / 4.096 MHz (crystal) 40 kHz ~ 256 kHz
LPF attenuation factor –40 dB/octave –24 dB/octave

LPF cut-off Frequency (f

CUT

), kHz

Maximum phrase number 127 (in MCU Interface Mode) 111
Pull-up/pull-down resistors Built in —
Standby conversion time 200 ms 3 Sec
Maximum external ROM 64 Mbit 16 Mbit

Added functions in edit ROM

Fade-out

Random playback

Melody playback

PCM playback

Serial input control

No Edit ROM

Type

Data ROM

Capacity

[1]

Maximum Speech Duration

f

SAM

= 4.0 kHz f

SAM

= 6.4 kHz f

SAM

= 8.0 kHz f

SAM

= 16.0 kHz f

SAM

= 32.0 kHz

MSM6650 64 Mbits

[2]

> 1 hour > 40 minutes > 30 minutes > 15 minutes > 8 minutes
MSM6652 288 Kbit 16.9 sec 10.5 sec 8.4 sec 4.2 sec 2.1 sec
MSM6653 544 Kbit 31.2 sec 19.5 sec 15.6 sec 7.8 sec 3.9 sec
MSM6654 1 Mbit 63.8 sec 39.9 sec 31.9 sec 15.9 sec 7.9 sec

MSM66P54

[3]

1 Mbit 63.8 sec 39.9 sec 31.9 sec 15.9 sec 7.9 sec

MSM6655 1.5 Mbit 96.5 sec 60.3 sec 48.2 sec 24.1 sec 12.0 sec
MSM6656 2 Mbit 129.1 sec 80.7 sec 64.5 sec 32.2 sec 16.1 sec

f

CUT

1.8 2.6 2.6 3.2 4.2 5.1 6.4 12.8

f

SAM

4.0 5.3 6.4 8.0 10.6 12.8 16.0 32.0

f

CUT

1.5 3.0 3.0

f

SAM

4.0 6.4 8.0

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ■ Package Drawings

■

4-3OKI SEMICONDUCTOR

PACKAGE DRAWINGS

Figure 1. MSM66P54 Mechanical Drawing (DIP20-P-300-W1 Package)

Figure 2. MSM66P54 Mechanical Drawing (SOP24-P-430-2K Package)

7.62

0~15°

0.25 +0.11/-0.05

5.08 MAX.3.3 ±0.3

6.4 ±0.2

22.6 ±0.2

18 10

19

0.6 TYP.

4.57 MAX.

SEATING
PLANE

2.54 1.5241.14 TYP. 0.46 +0.13/-0.08 ø0.25

M

Dimensions in mm.

2.2 ±0.2

2.7 MAX.

1.2 ±0.2

24 13

112

0.99 TYP.

Dimensions in mm.

Index Mark

1.27 0.35 ±0.1 0.25

M

15.95 ±0.1

7.9 ±0.1

12.0 ±0.5

Seating Plane

7.9 ±0.1

0.2 +0.1/-0.05

0~10°

2.05 ±0.3

0 ~ 0.3

■

MSM66P54 OTP Speech Synthesizer ■––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

4-4 OKI SEMICONDUCTOR

BLOCK DIAGRAMS

Figure 3. MSM66P54-03/-04 Block Diagram (Standalone Mode)

Address &

Switching
Controller

8

12

17-Stage Address Counter

7

Random

Circuit

I/O

Interface

OSC

(X’tal/RC)

Timing Controller

AOUTRESETXT/RC GNDVDD

A2
A1

A0
SW3
SW2
SW1
SW0

TEST

OSC1
OSC2
OSC3

BUSY

DATA

Controller

Melody

Generator

ADPCM

Synthesizer

PCM

Synthesizer

12-bit

DAC

LPF

BEEP Tone

Generator

RND

17-Stage Multiplexer

1-Mbit OTP ROM

(Containing 22-Kbit Edit

ROM & Address ROM)

Programming Circuitry

PGM

VPP

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ■ Block Diagrams

■

4-5OKI SEMICONDUCTOR

Figure 4. MSM66P54-01/-02 Block Diagram (MCU Interface Mode)

Address &
Command

Controller

8

12

17-Stage Address Counter

7

I/O

Interface

OSC

X’tal

Timing Controller

AOUTRESET GNDVDD

I6/SD

I5/SI

14
I3/PORT1
I4/PORT0

I1
I0

XT

BUSY

DATA

Controller

Melody

Generator

ADPCM

Synthesizer

PCM

Synthesizer

12-bit

DAC

LPF

BEEP Tone

Generator

17-Stage Multiplexer

NAR

ST

CMD

CH

XT

1-Mbit OTP ROM

(Containing 22-Kbit Edit

ROM & Address ROM)

Programming Circuitry

PGM

VPP

■

MSM66P54 OTP Speech Synthesizer ■––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

4-6 OKI SEMICONDUCTOR

PIN CONFIGURATION

Figure 5. MSM66P54-03/-04 Configuration (Standalone Mode)

Figure 6. MSM66P54-01/-02 Pin Configuration (MCU Interface Mode)

A0

201

A1

2

A2

3

TEST

4

RESET

5

BUSY

6

XT/RC

7

AOUT

8

GND

9

SW319
SW218
SW117
SW016
RND15
OSC314
OSC213
OSC112
VDD

18 Lead Plastic DIP

VDD
OSC1
OSC2

NC

OSC3

NC

PGM

RND

SW0

SW1

SW2

SW3

24 Lead Plastic SOP

GND
AOUT
XT/RC
NC
BUSY
NC
VPP
RESET
TEST
A2
A1
A0

24
23
22
21
20
19
18
17
16
15
14
13

1
2
3
4
5
6
7
8
9
10
11
12

10 11

VPP PGM

I4 192

I5/SI 3

I6/SD 4

CH 5

RESET 6

BUSY 7

NAR 8

AOUT 9

GND 10

I3/PORT1
18 I2/PORT0
17 I1
16 I0
15 ST
14 CMD
13 XT
12 XT
11 VDD

20-Lead Plastic DIP

VDD

XT
XT

NC

CMD

NC

PGM

ST

I0
I1

I2/PORT0

13/PORT1

24 Lead Plastic SOP

GND
AOUT
NAR
NC
BUSY
NC
VPP
RESET
CH
I6/SD
I5/SI
I4

24
23
22
21
20
19
18
17
16
15
14
13

1
2
3
4
5
6
7
8
9
10
11
12

VPP 201 PGM

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ■ Pin Descriptions

■

4-7OKI SEMICONDUCTOR

PIN DESCRIPTIONS

MSM66P54-03/-04 Pin Descriptions (Standalone Mode)

Pin Name I/O Function

RESET

I

Reset

. Setting this pin to “L” puts the device in standby status. At this time, oscillation stops, A

OUT

is pulled to GND,
and the device is initialized. The MSM6650 Family devices have an internal power-on reset. To operate the power-on
reset correctly, power should ramp up within 1 ms. If this is not possible, apply a RESET

pulse when power is turned

on. This pin has an internal pull-up resistor.

BUSY

O

Busy

. This pin outputs a “L” level during playback. At power-on, this pin is at “H” level.

XT/RC

I

X’tal/RC selectable pin

. Set to “H” level when using ceramic/crystal oscillation. Set to “L” level when using RC

oscillation.

A

OUT

O

Sound output

. This is the synthesized output pin of the internal low-pass filter.

GND –

Ground

.

V

DD

–

Power supply

.

OSC1 I

Oscillator 1.

This pin is a ceramic/crystal oscillator connection pin when using ceramic or crystal oscillation. This pin

is an RC connection pin when using RC oscillation. When using an external clock, use this pin as the clock input.

OSC2 O

Oscillator 2

. This pin is a ceramic/crystal oscillator connection pin when using a ceramic or crystal oscillator. This is
an RC connection pin when using RC oscillation. Leave open if using an external clock. OSC2 outputs a “L” level in
standby status.

OSC3 O

Oscillator 3.

Leave open if using a ceramic/crystal oscillator. This pin is the RC connection pin when using RC

oscillation. When RC oscillation is selected, OSC3 outputs a “H” level in standby status.

RND

I

Random Playback.

Random playback starts when the RND pin is set to a “L” level. At the fall of RND, addresses from
the random address playback circuit inside the IC are fetched. Set to a “H” level if random playback is not used. This
pin has an internal pull-up resistor.

TEST

I

Test Mode

. Set to “H” level. This pin has an internal pull-up resistor.

SW0 ~ SW3 I

Phrase Inputs.

These pins are phrase input pins corresponding to playback. If the input changes, SW0 ~ SW3 pins

capture address data after 16 ms and speech playback commences. These pins have internal pull-down resistors.

A0 ~ A2 I

Phrase Inputs.

Phrase input pins corresponding to playback. The A0 input becomes invalid when the random playback

function is used.

VPP – Power-supply voltage for programming the on-chip OTP ROM. Set to a “H” level or open during normal operation.
PGM I Interface pin for AR76-202 Speech Development System. Set to a “L” level or open during normal operation. This pin

has an internal pull-down resistor.

MSM66P54-01/-02 Pin Descriptions (Microcomputer Interface Mode)

Pin Name I/O Function

RESET

I

Reset

. Setting this pin to “L” puts the device in standby status. At this time, oscillation stops, A

OUT

is pulled to GND,
and the device is initialized. The MSM6650 Family devices have an internal power-on reset. To operate the power-on
reset correctly, power should ramp up within 1 ms. If this is not possible, apply a RESET

pulse when power is turned

on. This pin has an internal pull-up resistor.

BUSY

O

Busy

. This pin outputs a “L” level during playback. At power-on, this pin is at “H” level.

NAR O

Next Address Request.

The CMD

and ST input is valid when NAR is at a “H” level. When the CH pin is at “H” level,

NAR becomes a Channel 1 status signal. When the CH

pin is at “L”, NAR becomes a Channel 2 status signal. This pin
indicates whether the register that latches the addresses of I0~I6 in the Address & Command Controller (refer to the
block diagram) is empty or not. At “H” level, it is empty and new address data may be applied. At power-on, NAR is
“H” level.

AOUT O

Analog Sound Output

. Either the D/A converter or the low-pass filter output can be selected by a command input.

GND –

Ground.