AP8821 Datasheet, PDF (6/13 Pages) Aplus Intergrated Circuits – 21 sec VOICE OTP

„Pin Description
Integrated Circuits Inc. aP8821
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Name
OUT3
V_OUT1
V_OUT2
V_SS
OUT1
OUT2
C_OUT
OSC
VPP
S1
S2
V_DD
S3
S4
SBT
IRP
I/O/P
Function
O Programmable output 3
O PWM audio signal output 1 for buzzer & speaker
O PWM audio signal output 2 for buzzer & speaker
P Power ground
O Programmable output 1
O Programmable output 2
O Current output from internal DAC for speaker playback
I Oscillator resistor pin to control sampling frequency
P ^{Program power,}
must connect to VDD when playback
I ^{Trigger switch 1 / CPU Addr.1( LSB ),}
internal pull low, active high
I ^{Trigger switch 2 / CPU Addr.2,}
internal pull low, active high
P Positive power supply
I
Trigger switch 3 / CPU Addr.3,
internal pull low, active high
I
Trigger switch 4 / CPU Addr.4 ( MSB ),
internal pull low, active high
I Key Sequential/CPU trigger, internal pull low, active
high
I Interrupt to stop playback, internal pull low, active high
Note: The following pins are used to program data into the memory:
pin 4, 5, 6, 8, 9, 12,15 and16.
6