Rainbow Electronics ISD18B12 User Manual

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ADVANCED

ISD18B12

SINGLE-CHIP, SINGLE-MESSAGE

VOICE RECORD/PLAYBACK DEVICE

6- TO 12-SECONDS DURATION

Publication Release Date: August 17, 2007

- 1 - Revision A1

ISD18B12

TABLE OF CONTENTS

1. GENERAL DESCRIPTION ............................................................................................................... 3

2. FEATURES ....................................................................................................................................... 3

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

4. PAD DESCRIPTION ......................................................................................................................... 5

5. FUNCTIONAL DESCRIPTION ......................................................................................................... 6

6. ABSOLUTE MAXIMUM RATINGS ................................................................................................ 11

6.1 Operating Conditions ................................................................................................................... 11

7. ELECTRICAL CHARACTERISTICS.............................................................................................. 12

7.1. DC Parameters ........................................................................................................................... 12

7.2. AC Parameters ........................................................................................................................... 13

8. TYPICAL APPLICATION CIRCUIT ............................................................................................... 14

9. DIE INFORMATION ........................................................................................................................ 16

10. ORDERING INFORMATION .......................................................................................................... 17

11. VERSION HISTORY ....................................................................................................................... 18

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ISD18B12

1. GENERAL DESCRIPTION

Winbond’s ISD18B12 ChipCorder® is a new single-chip single-message record/playback device with a special TryMe feature. The user-selectable duration is from 6 to 12 seconds, with wide operating voltage ranging from 2.4V to 5.5V. Its sampling frequency, ranging from 4kHz to 8kHz, is externally controlled via resistor at Rosc pin. This device also includes microphone amplifier, anti-aliasing filter, multilevel storage array, smoothing filter and speaker amplifier. Two external resistors are used to adjust the microphone amplifier gain for the incoming signal. Thus, a minimum record/playback subsystem can be configured with a microphone, a speaker, several passive components, two push buttons, and a power source.

Recordings are stored into on-chip non-volatile memory, providing zero-power message storage. This unique, single-chip solution is made possible through Winbond’s patented Multi-Level Storage technology. Voice and audio signals are stored directly into memory in their natural form, providing high-quality, solid-state voice reproduction. The device is automatically power down after each operation cycle with typical standby current, 1µA. With the embedded Flash memory employed, data retention up to 100 years and typical 100,000 erase/record cycles can be reached.

2. FEATURES

• Supply voltage: 2.4V to 5.5V

• User-selected variable sampling frequency and duration via external resistor

Sampling Frequency 8 kHz 6.4 kHz 5.3 kHz 4 kHz Rosc 80 KΩ 100 KΩ 120 KΩ 160 KΩ Duration 6 secs 7.5 secs 9 secs 12 secs

• RECL : Level recording

RECE : Edge-trigger, toggle on-off

•

PLAYE : Edge-trigger, toggle on-off

•

PLAYL

•

: Level playback or looping playback

LEDR : LED output for recording

LEDP : LED output for playback

FT : Feed-through microphone input to speaker outputs

• Microphone amplifier gain: user control via two external resistors

• With feed-through enabled, r

ecord microphone signal into memory while feed-through path

remains active

• Playback takes precedence over the Recording operation

TryMe : TryMe special mode

•

• Package option: die only

• Temperature options: 0°C to +50°C

Publication Release Date: August 31, 2007

- 3 - Revision A1

3. BLOCK DIAGRAM

ISD18B12

INPUT

OSC

MICIN

MICOUT

Clock Control

Sampling Clock

Filter

Amp

Power Conditioning

SSAVSSDVCCD

CCA

Non-Volatile

Multi Level Storage

Array

Switch

TryMe

RECL LEDPFT

Filter

Device Control

RECE

Amp

LEDRPLAYLPLAYE

SP+

SP-

- 4 -

4. PAD DESCRIPTION

PAD NAME I / O FUNCTION

SSD

RECL

PLAYE

PLAYL

RECE

NC -- NC: No Connect

MICIN I

NC -- NC: No Connect

MICOUT O

NC -- NC: No Connect

SP- O

SSA

SP+ O

CCA

Rosc I

NC -- NC: No Connect

TryMe

Digital Ground: Ground path for digital circuits.

Level-Triggered Record: Low active input, Level-hold.

Edge-Triggered Playback: Low active input, Edge-trigger,

Level-Triggered Playback: Low active input, Level-hold.

Edge-Triggered Record: Low active input, Edge-trigger,

Microphone Input: The MICIN transfers input signal to the on-chip

microphone amplifier.

Microphone Output: Output of the microphone amplifier.

SP-: The negative signal of the differential speaker outputs.

Analog Ground: Ground path for analog circuits.

SP+: The positive signal of the differential speaker outputs.

Power Supply: Power supply for analog circuits.

Oscillator Resistor: Connect an external resistor from this pin to V

select the sampling frequency

Feed-Through (FT): Low active input, Level-hold, Feed-through microphone input to speaker outputs while in active state.

TryMe Mode : High active input, Level-hold. A special operating mode.

ISD18B12

toggle on-off.

SSA

LED output for Playback: During playback, this output is Low.

LEDP

NC -- NC: No Connect

CCD

LEDR

Sound Effect: Low active input, Level-hold, optional beeping sound effect.

Power Supply: Power supply for digital circuits.

LED output for Recording: During recording, this output is Low.

Publication Release Date: August 31, 2007

- 5 - Revision A1

ISD18B12

5. FUNCTIONAL DESCRIPTION

For the following related operations, if SE is not enabled, then no beep sound is heard. Also, the timing diagrams may not be in direct proportional scale.

5.1. Level-triggered Record (

• Recording starts from beginning of the memory and

• Recording ceases whenever

RECL

) Operation :

RECL

LEDR is on.

returns to High or when end of memory is reached and

off.

• Then device will automatically power down.

Fig. 1: Record–Level (

RECL

LEDR

BEEP

(Optional)

MicIn

LEDP

5.2. Edge-triggered Record (

• Recording starts from beginning of the memory and

RECL ) function till memory full

Deb

RECE

)Operation :

Memory Full

LEDR is on.

• Recording ceases whenever a subsequent trigger occurs at

LEDR is off.

and

• Then device will automatically power down.

RECE

or when end of memory is reached

LEDR

Fig. 2: Record–Edge (

RECL

LEDR

BEEP

(Optional)

MicIn

LEDP

RECE ) function with on-off

Deb

Stop

Deb

Memory Full

- 6 -

ISD18B12

5.3. Edge-triggered playback (

• Playback starts from beginning of the memory and

PLAYE ) Operation :

LEDP is on.

• Playback stops whenever end of message or a subsequent trigger occurs and

• Then device will automatically power down.

Fig. 3 : Playback–Edge (

PlayE

Start Stop

LEDP

SP+

SP-

LEDR

5.4. Level- triggered playback (

• Playback starts from beginning of the memory and

• Playback stops whenever an EOM marker is reached or

PLAYE ) function

Deb

PLAYL

Deb

)Operation :

Start

Deb

End of Message

LEDP is on.

PLAYL

returns to High and

• Then device will automatically power down.

LEDP is off.

LEDP

is off.

Fig. 4: Playback–Level (

PLAYL ) function

PlayL

Deb

LEDP

End of Message

SP+ SP-

LEDR

• Holding

Fig. 5: Looping playback function via

PLAYL Low constantly will perform looping playback function.

PLAYL

Publication Release Date: August 31, 2007

- 7 - Revision A1

PlayL

LEDP

ISD18B12

Deb

SP+

SP-

LEDR

5.5. Sound Effect (

SE ) Operation :

• Beeping feature for recording. Once active, one-beep indicates the start of recording and two-beep represents the end of recording.

5.6. Microphone amplifier gain

• Two external resistors, RI and RO, are used to adjust the microphone amplifier gain with respect to the incoming signal.

5.7. Playback (supersedes Record) Operation :

• Playback takes precedence over the Recording operation.

• If either PLAYE or PLAYL is activated during a recording cycle, the recording immediately ceases and

playback of the just-recorded message performs accordingly.

5.8. Feed-Through mode Operation :

• As

• If either

FT is held Low, the input signal from MICIN will directly transmit to the speaker outputs.

RECE is triggered or RECL is held Low simultaneously after FT is enabled, then input signal

will be recorded into memory while the Feed-Through mode is still on.

• After

FT is enabled, activating either PLAYE or PLAYL will first disable the feed-through path and

play the recorded message. Once playback is completed, the feed-through feature resumes.

5.9.

LEDR Operation :

LEDR stays on during recording.

•

• Also,

5.10.

•

• Also,

LEDR pulses Low momentarily at the end of playback operation.

LEDP Operation :

LEDP stays on during playback.

LEDP pulses Low momentarily at the end of recording.

5.11. Rosc Operation :

• When the R

• When R

varies from 80 KΩ to 160 KΩ, the duration changes from 6 to 12 seconds accordingly.

OSC

resistor value is changed during playback, the tone of a recorded message will alter either

OSC

faster or slower.

5.12. Speaker Outputs

• Both SP+ and SP- outputs can be used to drive an 8Ω speaker differentially. They are tri-state while device is in power down status.

- 8 -

ISD18B12

5.13. TryMe Special Operation :

This is a special feature. When The enabling and disabling of this feature is merely permitted while the device is in power down status. Once

TryMe is set, trigger on either RECL or RECE will initiate the TryMe operation sequence. While active, the

device performs a combination of the following 3 operations sequentially: Record a new message and automatic playback the just-recorded message once, then delete the recorded message. Internal pull-up exists.

The details of each operation are described as follows: a) Recording:

• The recording behavior follows the characteristics of the selected record pin,

• While recording, the

b) Playback:

• Upon completion of recording, the device automatic plays the just-recorded message once and

stops. During this operation, change of state on any control pins is prohibited.

• While playback, the LEDP is on if an LED is connected appropriately.

c) Erasure:

• Upon completion of playback, the device will involuntary delete the recorded message. During this

operation, change of state on any control pins is banned.

After completion of this TryMe operation, the device returns to standby state automatically. Once playback operation starts, any input on other controls is illegal.

TryMe is High, TryMe is active. When TryMe is Low, TryMe is disabled.

RECL or RECE .

LEDR is on if an LED is connected appropriately.

As a summary, the TryMe mode starts in the following conditions:

Logic Level 1 0 1

Under no circumstances, while this special operation is in progress, neither the power is disturbed nor any change of state on other control pins are permitted. Otherwise, it may cause the device becoming malfunction.

Fig 6: TryMe function via (

TryMe

1 1 0

RECL RECE

TryMe + RECL )

Publication Release Date: August 31, 2007

- 9 - Revision A1

ISD18B12

RECL

LEDR

BEEP

(Optional)

MicIn

LEDP

PLAYE

or PLAYL

SP+

SP-

Illegal state

Deb

Illegal state

5.14. Power interruption

• Any power interruption during an operation is strongly not recommended. If happened, it may result the device becoming malfunction.

5.15. Power-On to Playback Operation :

PLAYE or PLAYL is held at Low during power turns on, the device plays message accordingly with

• If respect to which play control being employed.

5.16. Power-On to Loop Playback Operation :

• If

PLAYL is hardwired to ground permanently, once power is on, the device performs looping playback

non-stop. This status will sustain unless power is turned off.

5.17. Automatic Playback after Record Operation :

• If

LEDP

is connected to

PLAYE

, after a record operation, then the device will automatic play message

once, then powers down.

- 10 -

ISD18B12

6. ABSOLUTE MAXIMUM RATINGS

ABSOLUTE MAXIMUM RATINGS

CONDITION VALUE

Junction temperature 150°C

Storage temperature range -65°C to +150°C

Voltage applied to any pins (VSS – 0.3V) to (VCC + 0.3V)

Voltage applied to Input pins (current limited to +/-20 mA) (VSS – 1.0V) to (VCC + 1.0V)

Voltage applied to output pins (current limited to +/-20 mA) (VSS – 1.0V) to (VCC + 1.0V)

VCC – VSS -0.3V to +7.0V

[1]

Stresses above those listed may cause permanent damage to the device. Exposure

to the absolute maximum ratings may affect device reliability and performance. Functional operation is not implied at these conditions.

[1]

6.1 OPERATING CONDITIONS

Operating temperature range 0°C to +50°C

Operating voltage (VCC)

Ground voltage (VSS)

[1]

VCC = V

[2]

VSS = V

CCA

SSA

= V

CCD

SSD

OPERATING CONDITIONS

CONDITION VALUE

[1]

+2.4V to +5.5V

[2]

Publication Release Date: August 31, 2007

- 11 - Revision A1

7. ELECTRICAL CHARACTERISTICS

7.1. DC PARAMETERS

ISD18B12

PARAMETER SYMBOL MIN

[2]

TYP

[1]

MAX

[2]

UNITS CONDITIONS

Input Low Voltage VIL 0.3xVcc V

Input High Voltage VIH 0.7xVcc V

Output Low Voltage VOL 0.3xVcc V I

Output High Voltage VOH 0.7xVcc V I

Standby Current I

Record Current I

Playback Current I

1 10 µA

STBY

15 mA V

REC

15 mA V

PLAY

= 4.0 mA

= -1.6 mA

[4] [5]

= 5.5V

= 5.5V, no

[3]

speaker load

Pull-up device for

RECE, PLAYE, PLAYL, FT

TryMe pins

RECL

Pull-up device for SE

Output Load Impedance R

PU1

PU2

8 Ω Speaker load

EXT

kΩ

MIC Input Voltage VIN 4 400 mV Peak-to-peak

MIC Amplifier Gain A

0 +34 dB Depend on

MicAmp

RO/RI

Gain from MIC to SP+/SP- A

+12 +46 dB Depend on

MSP

RO/RI

Notes:

[1]

Typical values @ TA = 25°, VCC = 5.5V and sampling frequency (Fs) at 8 kHz, unless stated.

[2]

All Min/Max limits are guaranteed by design, electrical testing and/or characterization. Not all

specifications are 100 percent tested.

[3]

LED output during recording.

[4]

and V

CCA

[5]

RECL , RECE , PLAYE , PLAYL , SE , FT and TryMe must be at V

biased under a separated power supply.

are connected together. Also, V

CCD

SSA

and V

are connected together.

SSD

. External components are

CCD

- 12 -

7.2. AC PARAMETERS

ISD18B12

CHARACTERISTIC SYMBOL MIN

Sampling Frequency

Record Duration

Playback Duration

Rising Time

Falling Time

Debounce Time

Beep Duration

Beep-Beep Duration

Delay to start recording

Delay during looping

LEDR Pulse Low Time

LEDP Pulse Low Time

REC

PLAY

Deb

TB1

TB2

TD1

TD2

TP1

TP2

[2]

TYP

6 12 sec Depend on Fs

100 nsec

536k/FS msec

512k/FS msec

1536k/FS msec

1552k/FS msec

1k/FS msec

1024k/FS msec

1280k/FS msec

[1]

MAX

[2]

UNITS CONDITIONS

8 kHz

[3]

[3] [4]

Notes:

[1]

Conditions are VCC = 5.5V and TA = 25°C, unless specified.

[2]

All Min/Max limits are guaranteed by design, electrical testing and/or characterization. Not all

specifications are 100 percent tested.

[3]

The value changes accordingly to the FS applied. Also, the internal oscillator may vary as much as +10%

over the operating temperature and voltage ranges.

[4]

k=1000

[3]

Publication Release Date: August 31, 2007

- 13 - Revision A1

ISD18B12

8. TYPICAL APPLICATION CIRCUIT

The following typical application examples on ISD18B12 series are for references only. They make no representation or warranty that such applications shall be suitable for the use specified. Each design has to be optimized in its own system for the best performance on voice quality, current consumption, functionalities and etc. It’s customer’s obligation to confirm the design on all the functionalities of their end-products.

In addition, the below notes apply to the following application examples:

* The suggested values are for references only. Depending on system requirements, they must

be fine tuned for best performance.

It is important to have a separate path for each ground and power back to the related terminals to minimize the noise. Besides, the power supplies should be decoupled as close to the device as possible.

Also, it is crucial to follow good audio design practices in layout and power supply decoupling. See recommendations in Application Notes from our websites.

Example #1: Typical Recording and Playback operations

CCD

SSD

CCA

SSA

SP-

SP+

MICOUT

MICIN

0.1 F

500k

Beeping

(Optional)

Ω∗

0.1 F

10k

Ω∗

Speaker

0.1 F*

10k

10 F*

Vcc

Ω∗

10 F*

ELECTRET

MICROPHONE

LEDR

PLAYL

PLAYE

RECE

RECL

80 K

1 K

Ω

LEDR

1 K

Ω

LEDP

PLAYL

PLAYE

I18B12

Ω∗

RECE

TryMe

RECL

OSC

- 14 -

Example #2: TryMe feature

ISD18B12

CCD

SSD

CCA

SSA

SP-

SP+

MICOUT

MICIN

TryMe

0.1 F

500kΩ∗

Vcc

Beeping

(Optional)

0.1 F

10k

Ω∗

Speaker

0.1 F*

10kΩ∗

10 F*

Vcc

Ω∗

10 F*

ELECTRET

MICROPHONE

LEDR

RECE

RECL

80 K

1 K

Ω∗

Ω

LEDR

Ω

LEDP

PLAYL

PLAYE

I18B12

RECE

RECL

OSC

Good Audio Design Practices

Winbond’s ChipCorder are very high-quality single-chip voice recording and playback devices. To ensure the highest quality voice reproduction, it is important that good audio design practices on layout and power supply decoupling are followed. See Application Information links below for details.

Good Audio Design Practices

http://www.winbond-usa.com/products/isd_products/chipcorder/applicationinfo/apin11.pdf

Single-Chip Board Layout Diagrams

http://www.winbond-usa.com/products/isd_products/chipcorder/applicationinfo/apin12.pdf

It is strongly recommended that before any design or layout project starts, the designer should contact Winbond Sales Rep for the most update technical information.

Publication Release Date: August 31, 2007

- 15 - Revision A1

9. DIE INFORMATION

ISD18B12

PLAYL PLAYE RECL

RECE

SSD

LEDR

ISD18B12

CCD

LEDP

TryMe

MICIN MICOUT SP- V

Contact Winbond Sales Representatives for information.

SSA

SP + V

- 16 -

CCA

Rosc

ISD18B12

10. ORDERING INFORMATION

Product Number Descriptor Key

When ordering, please refer to the following part numbers that are supported in volume for this product series. Consult the local Winbond Sales Representative or Distributor for availability information.

ISD18B Series

Duration:

12 = 6- to 12-second

ISD18Bxxxx

Temperature:

Blank = Commercial

• Die (0°C to +50°C)

Package Type:

X = Die

Package Part Number Ordering Number Comments

Die

For the latest product information, access Winbond’s worldwide website at http://www.winbond-usa.com

- 17 - Revision A1

ISD18B12X I18B12X

Publication Release Date: August 31, 2007

11. VERSION HISTORY

VERSION DATE DESCRIPTION

A0 May 2007 Pre-released version

A1 August 2007 Initial revision

ISD18B12

- 18 -

ISD18B12

prop

Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Furthermore, Winbond products are not intended for applications wherein failure of Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur.

Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales.

The contents of this document are provided only as a guide for the applications of Winbond products. Winbond makes no representation or warranties with respect to the accuracy or completeness of the contents of this publication and reserves the right to discontinue or make changes to specifications and product descriptions at any time without notice. No license, whether express or implied, to any intellectual property or other right of Winbond or others is granted by this publication. Except as set forth in Winbond's Standard Terms and Conditions of Sale, Winbond assumes no liability whatsoever and disclaims any express or implied warranty of merchantability, fitness for a particular purpose or infringement of any Intellectual property.

The contents of this document are provided “AS IS”, and Winbond assumes no liability whatsoever and disclaims any express or implied warranty of merchantability, fitness for a particular purpose or infringement of any Intellectual property. In no event, shall Winbond be liable for any damages whatsoever (including, without limitation, damages for loss of profits, business interruption, loss of information) arising out of the use of or inability to use the contents of this documents, even if Winbond has been advised of the possibility of such damages.

Application examples and alternative uses of any integrated circuit contained in this publication are for illustration only and Winbond makes no representation or warranty that such applications shall be suitable for the use specified.

The 100-year retention and 100K record cycle projections are based upon accelerated reliability tests, as published in the Winbond Reliability Report, and are neither warranted nor guaranteed by Winbond. This product incorporates SuperFlash

Information contained in this ISD published by ISD

This datasheet and any future addendum to this datasheet is(are) the complete and controlling ISD product specifications. In the event any inconsistencies exist between the information in this and other product documentation, or in the event that other product documentation contains information in addition to the information in this, the information contained herein supersedes and governs such other information in its entirety. This datasheet is subject to change without notice.

prior to August, 1998.

erties of their respective owners.

ChipCorder® datasheet supersedes all data for the ISD ChipCorder products

ChipCorder®

is the trademark of Silicon Storage Technology, Inc. All other trademarks

Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this datasheet belong to their respective owners.

Publication Release Date: August 31, 2007

- 19 - Revision A1

Rainbow Electronics ISD18B12 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual