GMS81C2012 datasheet(14/107 Pages) HYNIX

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GMS81C2012/GMS81C2020

HYUNDAI MicroElectronics

MAR. 2000 Ver 1.00

PIN NAME

In/Out

Function

Basic

Alternate

VDD

Supply voltage

VSS

Circuit ground

RA (Vdisp)

I(I)

1-bit high-voltage Input only port

High-voltage input power supply pin

RESET

Reset signal input

XIN

Oscillation input

XOUT

Oscillation output

SXIN(R74)

Sub Oscillation input

General I/O ports

SXOUT(R75)

Sub Oscillation output

R00 (INT0)

I/O (I)

8-bit high-voltage I/O ports

External interrupt 0 input

R01 (INT1)

I/O (I)

External interrupt 1 input

R02 (EC0)

I/O (I)

Timer/Counter 0 external input

R03 (BUZO)

I/O (O)

Buzzer driving output

R04~R07

I/O

R10~R17

I/O

8-bit high-voltage I/O ports

R20~R27

I/O

8-bit high-voltage I/O ports

R30~R35

I/O

6-bit high-voltage I/O ports

R40 (T0O)

I/O (O)

4-bit general I/O ports

Timer/Counter 0 output

R41~R43

I/O

R50~R52

I/O

8-bit general I/O ports

R53 (SCLK)

I/O (I/O)

Serial clock source

R54 (SIN)

I/O (I)

Serial data input

R55 (SOUT)

I/O (O)

Serial data output

R56 (PWM1O/T1O)

I/O (O)

PWM 1 pulse output /Timer/Counter 1 out-

put

R57

I/O

R60~R67 (AN0~AN7)

I/O (I)

8-bit general I/O ports

Analog voltage input

R70~R73

(AN8~AN11)

I/O (I)

4-bit general I/O ports

AVDD

Supply voltage input pin for ADC

AVSS

Ground level input pin for ADC

VDD

Supply voltage

VSS

Circuit ground

Table 5-1 GMS81C2020 Port Function Description

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