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
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User Program Memory (OTP/EPROM):
8 to 16K bytes
User EEPROM: 256 bytes
Data RAM: 384 to 512 bytes including 256 bytes
of stack
Master Reset and Power-On Reset
Low Voltage Detector (LVD) Reset option
Run and Power Saving modes
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
Software or Hardware Watchdog (WDG)
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
Synchronous Serial Peripheral Interface (SPI)
Asynchronous Serial Communications Interface
(SCI)
8-bit ADC with 8 channels
2)
8-bit Data Manipulation
63 basic Instructions and 17 main Addressing
Modes
8 x 8 Unsigned Multiply Instruction
True Bit Manipulation
Complete Development Support on DOS/
WINDOWS
TM
Real-Time Emulator
Full Software Package on DOS/WINDOWS
TM
(C-Compiler, Cross-Assembler, Debugger)
ST72T331J2
8K
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.
Device Summary
Features
Program Memory - bytes
EEPROM - bytes
RAM (stack) - bytes
Peripherals
Operating Supply
CPU Frequency
Temperature Range
Package
ST72T331J4
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
ST72T331N2
8K
ST72T331N4
16K
Note:
The ROM versions are supported by the ST72334 family.
May 2001
Rev. 1.8
1/107
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