ISD2540 datasheet(32/42 Pages) WINBOND

Part #	ISD2540

Description	SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION

PDF	42 Pages

Scroll/Zoom	100%

Manufacturer	WINBOND [Winbond]

Direct Link	http://www.winbond.com

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32 / 42 page

ISD2532/40/48/64

PB0

PB1

PA0

PA1

OSC1

OSC2

RESET

IRQ

PA2

PA3

PA4

PA5

PA6

PA7

CCD

CCA

SSD

SSA

SP+

SP-

MIC REF

MIC

AGC

AUX IN

ANA IN

ANA OUT

P/R

OEM

OVF

XCLK

ISD2532/40/48/64

RECORD

PLAY

MSG#

MC68HC705K1A

RUN

FIGURE 6: ISD2532/40/48/64 APPLICATION EXAMPLE – MICROCONTROLLER/ISD2500

INTERFACE

In this simplified block diagram of a microcontroller application, the Push-Button Mode and message

cueing are used. The microcontroller is a 16-pin version with enough port pins for buttons, an LED,

and the ISD2500 series device. The software can be written to use three buttons: one each for play

and record, and one for message selection. Because the microcontroller is interpreting the buttons

and commanding the ISD2500 device, software can be written for any function desired in a particular

application.

Note: Winbond does not recommend connecting address lines directly to a microprocessor bus.

Address lines should be externally latched.

- 32 -

ISD2540 Datasheet(PDF) 32 Page - Winbond

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