Rainbow Electronics ISD1700 - Manual (Page 4)

ISD1700 SERIES
- 4 -
2 FEATURES
y 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
y Selectable sampling frequency controlled by an external oscillator resistor
y
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
y 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
y Dual operating modes
o
Standalone mode:
ƒ Integrated message management techniques
ƒ Automatic power-down after each operation cycle
o
SPI mode:
ƒ Fully user selectable and controllable options via APC register and various SPI commands
y 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
y 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
y 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