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GMS81C2020 Datasheet, PDF (12/92 Pages) Hynix Semiconductor – CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver
GMS81C2020/GMS81C2120
Hyundai Micro Electro nics
PIN NAME
VDD
VSS
RA (Vdisp)
RESETB
XI
XO
R00 (INT0)
R01 (INT1)
R02 (EC0)
R03 (BUZO)
R04~R07
R10~R17
R20~R27
R30~R35
R40 (T0O)
R41~R43
R50~R52
R53 (SCLK)
R54 (SIN)
R55 (SOUT)
R56 (PWM1O/T1O)
R57
R60~R67 (AN0~AN7)
R70~R73 (AN8~AN11)
AVDD
AVSS
In/Out
-
-
I(I)
I
I
O
I/O (I)
I/O (I)
I/O (I)
I/O (O)
I/O
I/O
I/O
I/O
I/O (O)
I/O
I/O
I/O (I/O)
I/O (I)
I/O (O)
I/O (O)
I/O
I/O (I)
I/O (I)
-
-
Supply voltage
Circuit ground
1-bit high-voltage Input only port
Reset signal input
Oscillation input
Oscillation output
8-bit high-voltage I/O ports
8-bit high-voltage I/O ports
8-bit high-voltage I/O ports
6-bit high-voltage I/O ports
4-bit general I/O ports
8-bit general I/O ports
8-bit general I/O ports
4-bit general I/O ports
Supply voltage input pin for ADC
Ground level input pin for ADC
Function
High-voltage input power supply pin
External interrupt 0 input
External interrupt 1 input
Timer/Counter 0 external input
Buzzer driving output
Timer/Counter 0 output
Serial clock source
Serial data input
Serial data output
PWM 1 pulse output /Timer/Counter 1 output
Analog voltage input
12
preliminary
Nov. 1999 Ver 0.0