ISD1700 SERIES

- 4 -

2

FEATURES

Integrated message management systems for single-chip, push-button applications

o

REC

:

level-trigger for recording

o

PLAY

:

edge-trigger for individual message or level-trigger for looping playback sequentially

o

ERASE

:

edge-triggered erase for first or last message or level-triggered erase for all messages

o

FWD

:

edge-trigger to advance to the next message or fast message scan during the playback

o

VOL

: 8 levels output volume control

o

INT

RDY

: ready or busy status indication

o

RESET

: return to the default state

o

Automatic power-down after each operation cycle

Selectable sampling frequency controlled by an external oscillator resistor

Selectable

message

duration

o

A wide range selection from 20 secs to 480 secs pending upon sampling frequency chosen

Sample Freq. ISD1730

ISD1740

ISD1750

ISD1760

ISD1790 ISD17120 ISD17150 ISD17180 ISD17210 ISD17240

12 kHz

20 secs

26 secs

33 secs

40 secs

60 secs

80 secs

100 secs 120 secs 140 secs 160 secs

8 kHz

30 secs

40 secs

50 secs

60 secs

90 secs

120 secs 150 secs 180 secs 210 secs 240 secs

6.4 kHz

37 secs

50 secs

62 secs

75 secs

112 secs 150 secs 187 secs 225 secs 262 secs 300 secs

5.3 kHz

45 secs

60 secs

75 secs

90 secs

135 secs 181 secs 226 secs 271 secs 317 secs 362 secs

4 kHz

60 secs

80 secs

100 secs 120 secs 180 secs 240 secs 300 secs 360 secs 420 secs 480 secs

Message and operation indicators

o

Four customizable Sound Effects (SEs) for audible indication

o

Optional vAlert (voiceAlert) to indicate the presence of new messages

o

LED: stay on during recording, blink during playback, forward and erase operations

Dual operating modes

o

Standalone mode:

Integrated message management techniques

Automatic power-down after each operation cycle

o

SPI mode:

Fully user selectable and controllable options via APC register and various SPI commands

Two individual input channels

o

MIC+/MIC-: differential microphone inputs with AGC (Automatic Gain Control)

o

AnaIn: single-ended auxiliary analog input for recording or feed-through

Dual output channels

o

Differential PWM Class D speaker outputs directly drives an 8 Ω speaker or a typical buzzer

o

Configurable AUD (current) or AUX (voltage) single-ended output drives external audio amplifier

ChipCorder standard features

o

High-quality, natural voice and audio reproduction

o

2.4V to 5.5V operating voltage

o

100-year message retention (typical)

o

100,000 record cycles (typical)

Sampling Frequency

12 kHz

8 kHz

6.4 kHz

5.3 kHz

4 kHz

Rosc

53 k

Ω

80 k

Ω

100 k

Ω

120 k

Ω

160 k

Ω