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ST72141K Datasheet

Part NameDescriptionManufacturer
ST72141K 8-BIT MCU WITH ELECTRIC-MOTOR CONTROL, ADC, 16-BIT TIMERS, SPI INTERFACE STMICROELECTRONICS
STMicroelectronics STMICROELECTRONICS
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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

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