SN6A297
LCD Controller with Voice/Dual Tone Melody
PIN ASSIGNMENT
Symbol
I/O
SEG1-SEG40 O
COM8-COM1
O
GND
I
P23-P20
I/O
P33-P30
I/O
P43-P40
O
VO
O
RESET
I
OSC
I
TEST
I
XIN,XOUT
VDD
I
VLCDR
VLC1, VLC2,
VLC3, VLC4
Function Description
Segment 1~40 for LCD driver.
Com8-Com1 for 8*40 LCD driver.
Negative power supply.
Bit 3 to bit 0 of IO port 2.
Bit 3 to bit 0 of IO port 3.
Bit 3 to bit 0 of IO port 4.
D/A current output.
Reset pin with internal pull low.
Oscillation component connection pin.
For testing only.
32768 Hz Crystal connection pins.
Positive power supply.
LCD voltage adjusting pin.
LCD voltage bias connection pins.
2
May 24, 2001