Àû²©¡¤(¼¯ÍÅ)ÓÐÏÞ¹«Ë¾¹ÙÍø

GENERAL DESCRIPTION

INTRODUCTION

The ST72334J/N, ST72314J/N and ST72124J devices are members of the ST7 microcontroller family. They can be grouped as follows:

¨C ST72334J/Ndevices are designed for mid-range applications with Data EEPROM, ADC, SPI and SCI interface capabilities.

¨C ST72314J/N devices target the same range of applications but without Data EEPROM.

¨C ST72124J devices are for applications that do not need Data EEPROM and the ADC peripheral.

All devices are based on a common industry standard 8-bit core, featuring an enhanced instruction set.

The ST72C334J/N, ST72C314J/N and ST72C124J versions feature single-voltage FLASH memory with byte-by-byte In-Situ Programming (ISP) capability.

¡ö 8K or 16K Program memory (ROM or Single voltage FLASH) with read-out protection

¡ö 256-bytes EEPROM Data memory

¡ö In-Situ Programming (Remote ISP)

¡ö Enhanced Reset System

¡ö Low voltage supply supervisor with 3 programmable levels

¡ö Low consumption resonator or RC oscillators and by-pass for external clock source, with safe control capabilities

¡ö 4 Power saving modes

¡ö Standard Interrupt Controller

¡ö 44 or 32 multifunctional bidirectional I/O lines:

¨C External interrupt capability (4 vectors)

¨C 21 or 19 alternate function lines

¨C 12 or 8 high sink outputs

¡ö Real time base, Beep and Clock-out capabilities

¡ö Configurable watchdog reset

¡ö Two 16-bit timers with:

¨C 2 input captures (only one on timer A)

¨C 2 output compares (only one on timer A)

¨C External clock input on timer A

¨C PWM and Pulse generator modes

¡ö SPI synchronous serial interface

¡ö SCI asynchronous serial interface

¡ö 8-bit ADC with 8 input pins

(6 only on ST72334Jx, not available on ST72124J2)

¡ö 8-bit data manipulation

¡ö 63 basic instructions

¡ö 17 main addressing modes

¡ö 8 x 8 unsigned multiply instruction

¡ö True bit manipulation

¡ö Full hardware/software development package