GMS81C2020/GMS81C2120
Hyundai Micro Electronics
PIN NAME
In/Out
Function
VDD
VSS
-
-
Supply voltage
Circuit ground
RA (Vdisp
RESETB
XI
)
I(I)
1-bit high-voltage Input only port
Reset signal input
Oscillation input
High-voltage input power supply pin
I
I
XO
O
Oscillation output
R00 (INT0)
R01 (INT1)
R02 (EC0)
R03 (BUZO)
R04~R07
I/O (I)
I/O (I)
I/O (I)
I/O (O)
I/O
External interrupt 0 input
External interrupt 1 input
Timer/Counter 0 external input
Buzzer driving output
8-bit high-voltage I/O ports
R10~R17
I/O
8-bit high-voltage I/O ports
8-bit high-voltage I/O ports
6-bit high-voltage I/O ports
R20~R27
I/O
R30~R35
I/O
R40 (T0O)
R41~R43
I/O (O)
I/O
Timer/Counter 0 output
4-bit general I/O ports
R50~R52
I/O
R53 (SCLK)
R54 (SIN)
I/O (I/O)
I/O (I)
I/O (O)
I/O (O)
I/O
Serial clock source
Serial data input
8-bit general I/O ports
R55 (SOUT)
R56 (PWM1O/T1O)
R57
Serial data output
PWM 1 pulse output /Timer/Counter 1 output
R60~R67 (AN0~AN7)
R70~R73 (AN8~AN11)
AVDD
I/O (I)
I/O (I)
-
8-bit general I/O ports
Analog voltage input
4-bit general I/O ports
Supply voltage input pin for ADC
Ground level input pin for ADC
AVSS
-
12
preliminary
Nov. 1999 Ver 0.0
HYNIX [ HYNIX SEMICONDUCTOR ]
