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