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
