AT83C5103 datasheet(4/64 Pages) ATMEL

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AT8xC5103

4134C–8051–09/04

Pin Description

Mnemonic

Type

Name and Function

VSS

Ground: 0V reference

VCC

Power Supply: 3.0V or 5.5V

P1.0 - P1.7

I/O

Port 1: Port 1 is an 8-bit programmable I/O port with internal pull-up

Alternate functions for Port 1 include:

I/O

MISO (P1.0): Master IN, Slave OUT of the SPI controller

I/O

MOSI (P1.1): Master OUT, Slave IN of the SPI controller

I/O

DIG2 (P1.2): Programmable as Output with Push-pull

ECI: External Clock for PCA

I/O

CEX0 (P1.3): Capture/Compare External I/O for PCA module 0

I/O

CEX1 (P1.4): Capture/Compare External I/O for PCA module 1

I/O

CEX2 (P1.5): Capture/Compare External I/O for PCA module 2

I/O

CEX3 (P1.6): Capture/Compare External I/O for PCA module 3

I/O

SS (P1.7): Slave select input of the SPI controller

CEX4: Capture/Compare External I/O for PCA module 3

XTAL1

Input to the inverting oscillator amplifier

XTAL2

Output from the inverting oscillator amplifier

RST/VPP

RST: Negative Reset input

A low on this pin for two machine cycles while the oscillator is running,

resets the device.

This pin will include a pull-down to reset the circuit if no external reset

level is applied.

VPP: High voltage input for OTP programming

P3.0 - P3.7

I/O

Port 3: Port 3 is a 8-bit programmable I/O port with internal pull-up.

I/O

P3.0: Programmable as Output with Push-pull.

I/O

P3.1: Programmable as Output with Push-pull.

I/O

DIG0 (P3.2): Programmable as Output with Push-pull.

INT0: External Interrupt 0

I/O

P3.3: Programmable as Output with Push-pull.

INT1: External Interrupt 1

I/O

DIG1 (P3.4): Programmable as Output with Push-pull.

T0: Timer 0 external Input

I/O

P3.5: Programmable as Output with Push-pull.

T1: Timer 1 external Input

I/O

SPICK (P3.6): Clock I/O of the SPI controller

I/O

P3.7: Programmable as Output with Push-pull.

P4.0-P4.2

I/O

Port 4: Port 4 is an 3-bit I/O port with internal pull-up

AT83C5103 Datasheet(PDF) 4 Page - ATMEL Corporation

AT83C5103 Datasheet(HTML) 4 Page - ATMEL Corporation

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