ST72E331 Datasheet, PDF (1/107 Pages) STMicroelectronics – 8-BIT MCU WITH 8 TO 16K OTP/EPROM, 256 EEPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS

ST72E331
ST72T331
8-BIT MCU WITH 8 TO 16K OTP/EPROM, 256 EEPROM,
384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS
DATASHEET
s User Program Memory (OTP/EPROM):
8 to 16K bytes
s User EEPROM: 256 bytes
s Data RAM: 384 to 512 bytes including 256 bytes
of stack
s Master Reset and Power-On Reset
s Low Voltage Detector (LVD) Reset option
s Run and Power Saving modes
s 44 or 32 multifunctional bidirectional I/O lines:
– 15 or 9 programmable interrupt inputs
– 8 or 4 high sink outputs
– 8 or 6 analog alternate inputs
– 13 alternate functions
– EMI filtering
s Software or Hardware Watchdog (WDG)
s Two 16-bit Timers, each featuring:
– 2 Input Captures ¹⁾
– 2 Output Compares ¹⁾
– External Clock input (on Timer A)
– PWM and Pulse Generator modes
s Synchronous Serial Peripheral Interface (SPI)
s Asynchronous Serial Communications Interface
(SCI)
s 8-bit ADC with 8 channels ²⁾
s 8-bit Data Manipulation
s 63 basic Instructions and 17 main Addressing
Modes
s 8 x 8 Unsigned Multiply Instruction
s True Bit Manipulation
s Complete Development Support on DOS/
WINDOWS^TM Real-Time Emulator
s Full Software Package on DOS/WINDOWS^TM
(C-Compiler, Cross-Assembler, Debugger)
Device Summary
PSDIP42
CSDIP42W
PSDIP56
CSDIP56W
TQFP64
TQFP44
(See ordering information at the end of datashee
Notes:
1. One only on Timer A.
2. Six channels only for ST72T331J.
Features
ST72T331J2
ST72T331J4
ST72T331N2
ST72T331N4
Program Memory - bytes
EEPROM - bytes
RAM (stack) - bytes
Peripherals
Operating Supply
CPU Frequency
Temperature Range
Package
8K
16K
8K
16K
256
384 (256)
512 (256)
384 (256)
512 (256)
Watchdog, Timers, SPI, SCI, ADC and optional Low Voltage Detector Reset
3 to 5.5 V
8MHz max (16MHz oscillator) - 4MHz max over 85°C
- 40°C to + 125°C
TQFP44 - SDIP42
TQFP64 - SDIP56
Note: The ROM versions are supported by the ST72334 family.
Rev. 1.8
May 2001
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