技术特性

• Memories
  • 4K or 8K bytes Program memory (ROM and single voltage Flash) with readout protection and in-situ programming (remote ISP)
  • 256 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
  • Clock-out capability
  • 3 Power Saving Modes: Halt, Wait and Slow
• Interrupt Management
  • 7 interrupt vectors plus TRAP and RESET
  • 22 external interrupt lines (on 2 vectors)
• 22 I/O Ports
  • 22 multifunctional bidirectional I/O lines
  • 14 alternate function lines
  • 8 high sink outputs
• 3 Timers
  • Configurable watchdog timer
  • Two 16-bit timers with: 2 input captures, 2 output compares, external clock input on one timer, PWM and Pulse generator modes (one only on ST72104Gx-Auto and ST72216G1- Auto)
• 2 Communications Interfaces
  • SPI synchronous serial interface
  • I²C multimaster interface (only on ST72254Gx-Auto)
• 1 Analog Peripheral
  • 8-bit ADC with 6 input channels (except on ST72104Gx-Auto)
• 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

功能框图