ST6215 datasheet(4/70 Pages) STMICROELECTRONICS

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ST62T15C/T25C/E25C

1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The ST62T15C,T25C and ST62E25C devices are

low cost members of the ST62xx 8-bit HCMOS

family of microcontrollers, which is targeted at low

to medium complexity applications. All ST62xx de-

vices are based on a building block approach: a

common core is surrounded by a number of on-

chip peripherals.

The ST62E25C is the erasable EPROM version of

the ST62T15C,T25C device, which may be used

to emulate the ST62T15C,T25C device, as well as

the respective ST6215C,25C 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-

fined in the programmable option bytes 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 A/D Converter with 16

analog inputs and a Digital Watchdog timer, mak-

ing them well suited for a wide range of automo-

tive, appliance and industrial applications.

Figure 1. Block Diagram

TEST

NMI

INTERRUP T

PROGRAM

1836 Bytes

STACK LEVEL 1

STACK LEVEL 2

STACK LEVEL 3

STACK LEVEL 4

STACK LEVEL 5

STACK LEVEL 6

POWER

SUPPLY

OSCILLATOR

RESET

DATA ROM

USER

SELECTAB LE

DATA RAM

64 Bytes

PORT A

PORT B

PORT C

TIMER

DIGITAL

8 BIT CORE

TEST/VPP

3884 Bytes

ST62T15C

ST62T25C, E25C

8-BIT

A/D CONVERTER

PA0..PA 3 (20mA Sink)

PA4..PA 7 / Ain

PB0..P B7 / Ain

PC4..PC7 / Ain

TIMER

VDD VSS OSCin OSCout

RESE T

WATCHDOG

:MEMORY

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