ST6255C View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST6255C

8-bit MCUs with ADC, safe reset, auto-reload timer, EEPROM and SPI

STMicroelectronics 

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ST6255C ST6265C ST6265B

1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The ST6255C, and ST6265C devices are low cost

members of the ST62xx 8-bit HCMOS family of mi-

crocontrollers, which is targeted at low to medium

complexity applications. All ST62xx devices are

based on a building block approach: a common

core is surrounded by a number of on-chip periph-

erals.

The ST62E65C is the erasable EPROM version of

the ST62T65C OTP device, which may be used to

emulate the ST62T55C and ST62T65C OTP de-

vices, as well as the respective ST6255C and

ST6265C ROM devices.

OTP and EPROM devices are functionally identi-

cal. The ROM based versions offer the same func-

tionality selecting as ROM options the options de-

jFigure 1. Block Diagram

fined in the programmable option byte of the OTP/

EPROM versions.

OTP devices offer all the advantages of user pro-

grammability at low cost, which make them the

ideal choice in a wide range of applications where

frequent code changes, multiple code versions or

last minute programmability are required.

These compact low-cost devices feature a Timer

comprising an 8-bit counter and a 7-bit program-

mable prescaler, an 8-bit Auto-Reload Timer,

EEPROM data capability (except ST62T55C), a

serial port communication interface, an 8-bit A/D

Converter with 13 analog inputs and a Digital

Watchdog timer, making them well suited for a

wide range of automotive, appliance and industrial

applications.

TEST/VPP

NMI

TEST

8-BIT

A/D CONVERTER

INTERRUPT

PROGRAM

MEMORY

3884 bytes

(ST62T55C, T65C,

E65C)

DATA ROM

USER

SELECTABLE

DATA RAM

128 Bytes

DATA EEPROM

128 Bytes

(ST62T65C/E65C)

PC

STACK LEVEL 1

STACK LEVEL 2

STACK LEVEL 3

STACK LEVEL 4

STACK LEVEL 5

STACK LEVEL 6

8 BIT CORE

POWER

SUPPLY

OSCILLATOR

RESET

PORT A

PORT B

PORT C

AUTORELOAD

TIMER

TIMER

SPI (SERIAL

PERIPHERAL

INTERFACE)

DIGITAL

WATCHDOG

PA0..PA7 / Ain

PB0..PB5 / 30 mA Sink

PB6 / ARTimin / 30 mA Sink

PB7 / ARTimout / 30 mA Sink

PC0 / Ain

PC1 / Tim1 / Ain

PC2 / Sin / Ain

PC3 / Sout / Ain

PC4 / Sck / Ain

VDD VSS OSCin OSCout RESET

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