ST62T42B ST Microelectronics, ST62T42B Datasheet - Page 5

• Manufacturer Part Number: ST62T42B
• Description: 8-BIT OTP/EPROM MCU WITH LCD DRIVER / EEPROM AND A/D CONVERTER
• Manufacturer: ST Microelectronics

1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST62T42B and ST62E42B devices are low
cost members of the ST62xx 8-bit HCMOS family
of microcontrollers, which are targeted at low to
medium complexity applications. All ST62xx de-
vices are based on a building block approach: a
Figure 1. Block Diagram
TEST/V
(V
NMI
PP
on EPROM/OTP versions only)
PP
POWER
SUPPLY
V
STACK LEVEL 1
STACK LEVEL 2
STACK LEVEL 3
STACK LEVEL 4
STACK LEVEL 5
STACK LEVEL 6
DD
INTERRUPT
PROGRAM
7948 bytes
V
Memory
SS
TEST
PC
OSCin OSCout
OSCILLATOR
A/D CONVERTER
DATA EEPROM
SELECTABLE
8 BIT CORE
DATA ROM
DATA RAM
192 Bytes
128 Bytes
USER
8-BIT
RESET
RESET
common core is surrounded by a number of on-
chip peripherals.
The ST62E42B is the erasable EPROM version of
the ST62T42B device, which may be used to em-
ulate the ST62T42B device, as well as the respec-
tive ST6242B ROM devices.
LCD DRIVER
PERIPHERAL
WATCHD OG
SPI (SERIAL
INTE RFACE)
PORT B
TIMER 1
DIGITAL
PORT A
TIMER 2
PORT C
VLCD
VLCD1/3
VLCD2/3
PC0..PC7/S33..S40
PA4..PA7/Ain
PB2..PB3/Ai n
PB4/20mA Sink
PB5/Scl/20mA Sink
PB6/Sin/20mA Sink
PB7/Sout/20mA Sink
S9..S32, S41..S48
COM1..COM4
ST62T42B/E42B
VA0479M
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