GMS81C5108
JUNE 2001 Ver 1.0
7
PIN NAME
Pin No.
Primary Function
Secondary Function
State @ Reset
State @ STOP
I/O
Description
I/O
Description
V
DD
62
-
Supply Voltage
-
-
-
-
V
SS
33
-
Circuit Ground
-
-
-
-
AV
DD
35
-
Supply Voltage for
ADC
-
-
-
-
AV
SS
40
-
Ground for ADC
-
-
-
-
RESET
65
I
Reset (low active)
-
-
‘L’ input
‘H’ input
WDTOUT
67
O
Watch dog output
-
-
Floating (To be
connect Pull-up)
State of before
STOP
REMOUT
61
O
Remocon output
-
-
‘L’ output
X
IN,
X
OUT
63, 64
I,O
Main clock oscillator
-
-
Oscillation
‘L’, ‘L’
SX
IN,
SX
OUT
68, 69
I,O
Sub clock oscillator
-
-
Oscillation
V
REG
66
-
Sub clock voltage
-
-
-
-
VCL0~VCL2
70,72,73
-
LCD drive voltage
-
-
Internal VCL0
Connected
State of before
STOP
VLCDC
71
-
LCD drive voltage
booster reference
-
-
-
-
CAPH,CAPL
74,75
-
LCD drive voltage
booster capacitor
-
-
Internal VCL0
Connected
State of before
STOP
SEG0 ~ SEG33 34, 32~1
O
LCD segment output
-
-
Segment output
COM0
76
O
LCD common output
-
-
Common output
SEG34/COM3
SEG35/COM2
SEG36/COM1
79~77
O
LCD common output.
-
LCD segment
output
Common output
State of before
STOP
R00/INT0
41
I/O
General I/O port
I
Interrupt Input
Input port
R01/INT1
54
I/O
I
Interrupt Input
R02/INT2
55
I/O
I
Interrupt Input
R03/EC0
56
I/O
I
Event counter input
R04/BUZ
57
I/O
O
Buzzer output
R05/SCK
58
I/O
I/O
Serial clock I/O
R06/SO
59
I/O
O
Serial Data Output
R07/SI
60
I/O
I
Serial Data Input
R10 ~ R17/
KS0 ~ KS7
42~49
I/O
I
Key wake-up input
R20 ~ R23/
AN0 ~ AN3
36~39
I/O
I
A/D converter
analog input
R30,R32,R33
50,52,53
I/O
-
-
R31/PWM
51
I/O
O
PWM output
Table 5-1 Port Function Description
Downloaded from
Elcodis.com
electronic components distributor
