ST62T45B datasheet(69/72 Pages) STMICROELECTRONICS

69 / 72 page

March 1998

69/72

Rev. 2.3

ST6245B

8-BIT ROM MCU WITH LCD DRIVER,

EEPROM AND A/D CONVERTER

3.0 to 6.0V Supply Operating Range

8 MHz Maximum Clock Frequency

-40 to +85

°C Operating Temperature Range

Run, Wait and Stop Modes

5 Interrupt Vectors

Look-up Table capability in Program Memory

Data Storage in Program Memory:

User selectable size

Data RAM: 128 bytes

Data EEPROM: 128 bytes

User Programmable Options

19 I/O pins, fully programmable as:

– Input with pull-up resistor

– Input without pull-up resistor

– Input with interrupt generation

– Open-drain or push-pull output

– Analog Input

– LCD segments (8 combiport lines)

4 I/O lines can sink up to 20mA to drive LEDs or

TRIACs directly

Two

8-bit

Timer/Counter

with

7-bit

programmable prescaler

Digital Watchdog

8-bit A/D Converter with 7 analog inputs

8-bit Synchronous Peripheral Interface (SPI)

LCD

driver

with 24

segment

outputs,

backplane outputs and selectable multiplexing

ratio.

32kHz oscillator for stand-by LCD operation

On-chip Clock oscillator can be driven by Quartz

Crystal or Ceramic resonator

One external Non-Maskable Interrupt

ST6245-EMU2 Emulation and Development

System (connects to an MS-DOS PC via a

parallel port).

DEVICE SUMMARY

PQFP52

DEVICE

ROM

(Bytes)

I/O Pins

ST6245B

3884

11 to 19

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