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參數資料
| 型號： | ST72121J4T1/XXX |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, TQFP-44 |
| 文件頁數： | 1/87頁 |
| 文件大小： | 1365K |
| 代理商： | ST72121J4T1/XXX |
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January 1999
1/87
This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.
ST72121
8-BIT MCU WITH 8 TO 16K ROM/OTP/EPROM,
384 TO 512 BYTES RAM, WDG, SCI, SPI AND 2 TIMERS
PRELIMINARY DATA
User Program Memory (ROM/OTP/EPROM):
8 to 16K 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
32 multifunctional bidirectional I/O lines:
– 9 programmable interrupt inputs
– 4 high sink outputs
– 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 Data Manipulation
63 basic Instructions and 17 main Addressing
Modes
8 x 8 Unsigned Multiply Instruction
True Bit Manipulation
Complete
Development Support on
DOS/
WINDOWSTM Real-Time Emulator
Full Software Package on DOS/WINDOWSTM
(C-Compiler, Cross-Assembler, Debugger)
Note: 1. One only on Timer A.
Device Summary
TQFP44
PSDIP42
CSDIP42W
(See ordering information at the end of datasheet)
Features
ST72121J2
ST72121J4
Program Memory - bytes
8K
16K
RAM (stack) - bytes
384 (256)
512 (256)
Peripherals
Watchdog, Timers, SPI, SCI and optional Low Voltage Detector Reset
Operating Supply
3 to 5.5 V
CPU Frequency
8MHz max (16MHz oscillator) - 4MHz max over 85°C
Temperature Range
- 40°C to + 125°C
Package
TQFP44 - SDIP42
OTP/EPROM Devices
ST72T121J4/ST72E121J4
1
Rev. 1.5
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