This document describes an 8-bit MCU with electric-motor control, ADC, 16-bit timers, and SPI interface. The product features 8K program memory, 256 bytes RAM, clock, reset and supply management, 14 I/O ports, motor control peripheral, 3 timers, communications interface, analog peripheral, instruction set, and development tools.
The ST72141K is an 8‑bit microcontroller designed for motor‑control applications, featuring an on‑chip motor controller, 8‑bit ADC, SPI interface, and multiple timers. The document details the device’s architecture, pinout, and functional blocks, including PWM channels, analog inputs, and watchdog timer.
Key sections cover general description, pin description, motor controller peripheral, watchdog timer, 16‑bit timers, SPI and ADC interfaces, instruction set, electrical characteristics, and package information, providing developers with the data needed to integrate the MCU into their designs.
| Program memory | 8 KB |
|---|---|
| RAM | 256 bytes |
| Operating supply voltage | 4 V to 5.5 V |
| CPU frequency | 4 MHz or 8 MHz |
| PWM output channels | 6 |
| Analog inputs for rotor position | 3 |
| Watchdog timer | Present |
| Operating temperature range | -40 °C to +85 °C |
| Package type | SDIP‑32 |
The device operates from 4 V to 5.5 V.
It provides six PWM output channels.
The program memory is 8 KB.
It can operate from –40 °C up to +85 °C.