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  ST72F321BAR9T6

64/44-pin, 8-bit MCU with 32 to 60K ROM/ FLASH, 10-bit ADC, five timers, SPI, SCI, I2C interface

Memories
  • 32K to 60K dual voltage High Density Flash (HDFlash) or ROM with read-out protection capability. In-Application Programming and n-Circuit Programming for HDFlash devices
  • 1K to 2K RAM
  • HDFlash endurance: 100 cycles, data retention: 40 years at 85°C
Clock, Reset And Supply Management
  • Enhanced low voltage supervisor (LVD) for main supply and auxiliary voltage detector (AVD) with interrupt capability
  • Clock sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
  • PLL for 2x frequency multiplication
  • Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
Interrupt Management
  • Nested interrupt controller
  • 14 interrupt vectors plus TRAP and RESET
  • Top Level Interrupt (TLI) pin on 64-pin devices
  • 15/9 external interrupt lines (on 4 vectors)
Up to 48 I/O Ports
  • 48/32/24 multifunctional bidirectional I/O lines
  • 34/22/17 alternate function lines
  • 16/12/10 high sink outputs
5 Timers
  • Main Clock Controller with: Real time base, Beep and Clock-out capabilities
  • Configurable watchdog timer
  • Two 16-bit timers with: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes8-bit PWM Auto-reload timer with: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
3 Communications Interfaces
  • SPI synchronous serial interface
  • SCI asynchronous serial interface
  • I2C multimaster interface
1 Analog peripheral (low current coupling)
  • 10-bit ADC with up to 16 robust input ports
Instruction Set
  • 8-bit Data Manipulation
  • 63 Basic Instructions
  • 17 main Addressing Modes
  • 8 x 8 Unsigned Multiply Instruction
Development Tools
  • Full hardware/software development package
  • In-Circuit Testing capability