ST72F321J9T6

ST7 系列 8 MHz 6 KB 闪存 2 KB SRAM 8位 微控制器 - LQFP-44

INTRODUCTION

The ST72321R, ST72321AR and ST72321J devices are members of the ST7 microcontroller family designed for mid-range applications All devices are based on a common industry standard 8-bit core, featuring an enhanced instruction set and are available with FLASH or ROM program memory.

Under software control, all devices can be placed in WAIT, SLOW, ACTIVE-HALT or HALT mode, reducing power consumption when the application is in idle or stand-by state.

■ Memories

   – 32K to 60K dual voltage High Density Flash HDFlash or ROM with read-out protection capability.

    In-Application Programming and In-Circuit Programming for HDFlash devices

   – 1K to 2K RAM

   – HDFlash endurance: 100 cycles, data retention: 20 years at 55°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 os cillators, internal RC oscillator, clock security system 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 external interrupt lines on 4 vectors

■ Up to 48 I/O Ports

   – 48/32 multifunctional bidirectional I/O lines

   – 34/22 alternate function lines

   – 16/12 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 modes

   – 8-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 LIN compatible

   – I2C multimaster interface

■ 1 Analog peripheral

   – 10-bit ADC with up to 16 input pins

■ 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