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ISD2532 View Datasheet(PDF) - Winbond

Part NameDescriptionManufacturer
ISD2532 SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION Winbond
Winbond Winbond
ISD2532 Datasheet PDF : 42 Pages
First Prev 31 32 33 34 35 36 37 38 39 40 Next Last
ISD2532/40/48/64
TABLE 15: APPLICATION EXAMPLE – PUSH-BUTTON CONTROL
Control Step
Function
Action
1
Select Record/Playback Mode
P/ R = As desired
2A
Begin playback
P/ R = HIGH, CE = Pulse LOW
2B
Begin record
P/ R = LOW, CE = Pulse LOW
3
Pause record or playback
CE = Pulsed LOW
4A
End playback
Automatic at EOM marker or PD = Pulsed HIGH
4B
End record
PD = Pulsed HIGH
TABLE 16: APPLICATION EXAMPLE – PASSIVE COMPONENT FUNCTIONS
Parts
Function
Comments
R2
Release time constant
Sets release time for AGC
R4
Series limiting resistor
Reduces level to prevent distortion at
higher supply voltages
R6, R7
Pull-up and pull-down resistors
Defines static state of inputs
C1, C4, C5 Power supply capacitors
Filters and bypass of power supply
C2
Attack/Release time constant
Sets attack/release time for AGC
C3
Low-frequency cutoff capacitor
Provides additional pole for low-frequency
cutoff
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