●INTRODUCTION
●The ST72334J/N-Auto, ST72314J/N-Auto and ST72124J-Auto devices are members of the ST7 microcontroller family. They can be grouped as follows:
●– ST72334J/N-Auto devices are designed for mid range applications with Data EEPROM, ADC, SPI and SCI interface capabilities.
●– ST72314J/N-Auto devices target the same range of applications but without Data EEPROM.
●– ST72124J-Auto 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-Auto, ST72C314J/N-Auto and ST72C124J-Auto versions feature single-voltage Flash memory with byte-by-byte In-Situ Programming (ISP) capability.
●■ Memories
● – 8 or 16 Kbyte Program memory (ROM or single voltage Flash) with readout protection and in-situ programming (remote ISP)
● – 256 bytes EEPROM Data memory (with read out protection option in ROM devices)
● – 384 or 512 bytes RAM
●■ Clock, Reset and Supply Management
● – Enhanced reset system
● – Enhanced low voltage supply supervisor with 3 programmable levels
● – Clock sources: crystal/ceramic resonator oscillators or RC oscillators, external clock, backup Clock Security System
● – 4 Power Saving Modes: Halt, Active Halt, Wait and Slow
● – Beep and clock-out capabilities
●■ Interrupt Management
● – 10 interrupt vectors plus TRAP and RESET
● – 15 external interrupt lines (4 vectors)
●■ 44 or 32 I/O Ports
● – 44 or 32 multifunctional bidirectional I/O lines:
● – 21 or 19 alternate function lines
● – 12 or 8 high sink outputs
●■ 4 Timers
● – Configurable watchdog timer
● – Real-time base
● – Two 16-bit timers with: 2 input captures (only one on timer A), 2 output compares (only one on timer A), External clock input on timer A, PWM and Pulse generator modes
●■ 2 Communications Interfaces
● – SPI synchronous serial interface
● – SCI asynchronous serial interface (LIN compatible)
●■ 1 Analog Peripheral
● – 8-bit ADC with 8 input channels (6 only on ST72334Jx, not available on ST72124J2)
●■ Instruction Set
● – 8-bit data manipulation
● – 63 basic instructions
● – 17 main addressing modes
● – 8 x 8 unsigned multiply instruction
● – True bit manipulation
●■ Development Tools
● – Full hardware/software development package
