●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
