INTRODUCTION

The ST72260Gx, ST72262Gx and ST72264Gx devices are members of the ST7 microcontroller family. They can be grouped as follows :

  – ST72264Gx devices are designed for mid-range applications with ADC, I2C and SCI interface capabilities.

  – ST72262Gx devices target the same range of applications but without I2C interface or SCI.

  – ST72260Gx devices are for applications that do not need ADC, I2C peripherals or SCI.

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

■ Memories

    – 4 K or 8 Kbytes Program memory: ROM or Single voltage extended Flash (XFlash) with read-out protection write protection and In Circuit Programming and In-Application Programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention: 20 years at 55°C.

    – 256 bytes RAM

■ Clock, Reset and Supply Management

    – Enhanced reset system

    – Enhanced low voltage supply supervisor (LVD) with 3 programmable levels and auxiliary voltage detector (AVD) with interrupt capability for implementing safe power-down procedures

    – Clock sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock

    – PLL for 2x frequency multiplication

    – Clock-out capability

    – 4 Power Saving Modes: Halt, Active Halt,Wait and Slow

■ Interrupt Management

    – Nested interrupt controller

    – 10 interrupt vectors plus TRAP and RESET

    – 22 external interrupt lines (on 2 vectors)

■ 22 I/O Ports

    – 22 multifunctional bidirectional I/O lines

    – 20 alternate function lines

    – 8 high sink outputs

■ 4 Timers

    – Main Clock Controller with Real time base and Clock-out capabilities

    – Configurable watchdog timer

    – Two 16-bit timers with: 2 input captures, 2 out put compares, external clock input on one timer, PWM and Pulse generator modes

■ 3 Communication Interfaces

    – SPI synchronous serial interface

    –I2C multimaster interface (SMBus V1.1 Compliant)

    – SCI asynchronous serial interface

■ 1 Analog peripheral

    – 10-bit ADC with 6 input channels

■ Instruction Set

    – 8-bit data manipulation

    – 63 basic instructionswith illegal opcode detection

    – 17 main addressing modes

    – 8 x 8 unsigned multiply instruction

■ Development Tools

    – Full hardware/software development package