GMS81604PL Ver la hoja de datos (PDF) - Hyundai Micro Electronics

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componentes Descripción

Fabricante

GMS81604PL

LG Semicon. CMOS single-chip 8-bit microcontroller. ROM size 8K bytes. 256 bytes of on-chip data RAM

Hyundai Micro Electronics 

LG Semicon

GMS81604/08

PIN DESCRIPTIONS

VDD: Supply voltage.

VSS: Circuit Ground.

TEST: For test purposes only. Connect it to VDD.

RESET: Reset the MCU.

XIN: Input to the inverting oscillator amplifier and

input to the internal clock operating circuit.

XOUT: Output from the inverting oscillator amplifier.

R00~R07: R0 is an 8-bit, CMOS, bidirectional I/O

port. As an output port each pin can sink several LS

TTL inputs. R0 pins that have 1 or 0 written to their

Port Direction Mode Register, can be used as outputs

or inputs.

R10~R17: R1 is an 8-bit, CMOS, bidirectional I/O

port. As an output port each pin can sink several LS

TTL inputs. R1 pins that have 1 or 0 written to their

Port Direction Mode Register, can be used as outputs

or inputs.

R40~R47: R4 is an 8-bit, CMOS, bidirectional I/O

port. As an output port each pin can sink several LS

TTL inputs. R4 pins that have 1 or 0 written to their

Port Direction Mode Register, can be used as outputs

or inputs.

In addition, Port 4 serves the functions of the various

following special features.

Port Pin

R40

R41

R42

R43

R44

R45

R46

R47

Alternate Function

INT0 (External Interrupt 0)

INT1 (External Interrupt 1)

INT2 (External Interrupt 2)

INT3 (External Interrupt 3)

EC0 (External Count Input to Timer/

Counter 0)

EC2 (External Count Input to Timer/

Counter 2)

T1O (Timer 1 Clock-Out)

T3O (Timer 3 Clock-Out)

R50, R51, R55: R5 is a 3-bit, CMOS, bidirectional I/O

port. As an output port each pin can sink several LS

TTL inputs. R5 pins that have 1 or 0 written to their

Port Direction Mode Register, can be used as outputs

or inputs. R50 and R51 differs in having internal

pull-ups.

Port R55 serves the functions of special features.

Port Pin

R55

Alternate Function

BUZ (Square wave output for Buzzer

driving)

R60~R67: R6 is an 8-bit, CMOS, I/O port. R60~R63

can be used as only input, can not be output, R64~R67

are bidirectional I/O port. As an output port each pin

can sink several LS TTL inputs. R64~R67 pins that

have 1 or 0 written to their Port Direction Mode

Register, can be used as outputs or inputs.

R6 serves the functions of following special features.

Port Pin

R60

R61

R62

R63

R64

R65

R66

R67

Alternate Function

AN0 (ADC input 0)

AN1 (ADC input 1)

AN2 (ADC input 2)

AN3 (ADC input 3)

AN4 (ADC input 4)

AN5 (ADC input 5)

AN6 (ADC input 6)

AN7 (ADC input 7)

AVDD: Supply voltage to the ladder resistor of ADC

circuit. To enhance the resolution of analog to digital

converter, use independent power source as well as

possible, other than digital power source.

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