st62t62b STMicroelectronics, st62t62b Datasheet - Page 4

• Manufacturer Part Number: st62t62b
• Description: 8-bit Otp/eprom Mcus With A/d Converter, Auto-reload Timer And Eeprom
• Manufacturer: STMicroelectronics

ST62T52B ST62T62B/E62B
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST62T52B and ST62T62B devices is low cost
members of the ST62xx 8-bit HCMOS family of
microcontrollers, which is targeted at low to medi-
um complexity applications. All ST62xx devices
are based on a building block approach: a com-
mon core is surrounded by a number of on-chip
peripherals.
The ST62E62B is the erasable EPROM version of
the ST62T62B device, which may be used to em-
ulate the ST62T52B and ST62T62B devices as
well as the ST6252B and ST6262B 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-
Figure 1. Block Diagram
4/68
TEST/V
4
NMI
PP
POWER
SUPPLY
V
1836 bytes EPROM
(ST62T52B, T62B)
STACK LEVEL 1
STACK LEVEL 2
STACK LEVEL 3
STACK LEVEL 4
STACK LEVEL 5
STACK LEVEL 6
DD
1836 bytes OTP
INTERRUPT
PROGRAM
MEMORY
(ST62E62B)
V
SS
TEST
PC
OSCin OSCout
OSCILLATOR
A/D CONVERTER
DATA EEPROM
SELECTABLE
(ST62T62B/E62B)
8 BIT CORE
DATA ROM
DATA RAM
128 Bytes
USER
64 Bytes
8-BIT
RESET
RESET
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 ST62T52B), an
8-bit A/D Converter with 4 analog inputs and a
Digital Watchdog timer, making them well suited
for a wide range of automotive, appliance and in-
dustrial applications.
AUTORELOAD
WATCHDOG
DIGITAL
PORT A
PORT B
PORT C
TIMER
TIMER
PA4..PA5 / Ain
PB0, PB2..PB3 / 20 mA Sink
PB6 / ARTimin / 20 mA Sink
PB7 / ARTimout / 20 mA Sink
PC2..PC3 / Ain