APLUS
PIN DESCRIPTIONS
Name
TG8
LED 1
API840N
PIN CONFIGURATION
Function
Trigger Switch 8, Internal Pull LOW,
Active HIGH
Drives First LED Flash at 3 Hz,
Active LOW
PWM Audio Signal Output for
Buzzer
Compliment PWM Audio Signal
Output for Buzzer
Power Ground
Generate 30 ms Pulse or Busy
Signal After Voice Playback
Drives Second LED Flash at 3 Hz,
Active LOW
Current Output from Internal DAC
for Speaker Playback
Oscillator Resistor Pin to Control
Sampling Frequency
Trigger Switch 5, Internal Pull LOW,
Active HIGH
Trigger Switch 6, Internal Pull LOW,
Active HIGH
Program Power Supply, No
Connect When Voice Playback
I/O
I
O
O
O
-
O
O
O
I
I
I
-
I
I
-
I
I
I
I
I
20-Pin 300-mil PDIP
TG8
LED1
V
OUT1
V
OUT2
GND
STP
LED2
C
OUT
OSC
TG5
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
TG7
IRP
SBT
TG4
TG3
V
CC
TG2
TG1
V
PP
TG6
V
OUT1
V
OUT2
GND
STP/BUSY
LED 2
C
OUT
OSC
TG5
TG6
V
PP
TG1
TG2
V
CC
TG3
TG4
SBT
IRP
TG7
Trigger Switch 1, Internal Pull LOW,
Active HIGH
Trigger Switch 2, Internal Pull LOW,
Active HIGH
Positive Power Supply
Trigger Switch 3, Internal Pull LOW,
Active HIGH
Trigger Switch 4, Internal Pull LOW,
Active HIGH
One Key or Sequential Trigger,
Internal Pull LOW, Active HIGH
Interrupt to Stop Playback, Internal
Pull LOW, Active HIGH
Trigger Switch 7, Internal Pull LOW,
Active HIGH
Note:
1. The following pins are used to program data into the memory on the chip:
pins 5, 6, 7, 9, 12, 15, 18 and 19.
4
APLUS [ APLUS INTERGRATED CIRCUITS ]
