GENERAL DESCRIPTION

INTRODUCTION

The ST72141K devices are members of the ST7 microcontroller family designed specifically for motor control applications and including A/D conversion and SPI interface capabilities. They include an on-chip Moter Controller peripheral for control of electric brushless moters with or without sensors. An example application, for 6-step control of a Permanent Magnet DC motor, is shown in Figure 1.

■ Memories

– 8K Program memory (ROM/OTP/EPROM)

– 256 Bytes RAM

■ Clock, Reset and Supply Management

– Enhanced reset system

– Low voltage supply supervisor

– 3 Power saving modes

■ 14 I/O Ports

– 14 multifunctional bidirectional I/O lines with: External interrupt capability (2 vectors), 13 alternate function lines, 3 high sink outputs

■ Motor Control peripheral

– 6 PWM output channels

– Emergency pin to force outputs to HiZ state

– 3 analog inputs for rotor position detection with no need for additional sensors

– Comparator for current limitation

■ 3 Timers

– Two 16-bit timers with: 2 input captures, 2 output compares, external clock input, PWM and Pulse generator modes

– Watchdog timer for system integrity

■ Communications Interface

– SPI synchronous serial interface

■ Analog Peripheral

– 8-bit ADC with 8 input pins

■ 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

ST72T141K2M6属于集成电路（IC） > 微控制器。意法半导体（ST）集团制造生产的ST72T141K2M6微控制器微控制器产品是相对复杂的用户可编程数字逻辑器件。这些产品与视为微控制器的器件密切相关，两者之间的区别主要体现在制造商选择的用词。不过按照传统，微控制器集成了工作存储器，也更可能包含混合信号外设，并且往往与更简单的软件范例结合使用，旨在重复执行一系列预定义的任务。