STMicroelectronics ST10F271Z1T3

Overview

ST10F271Z1T3 from STMicroelectronics is a 16-bit automotive-grade MCU featuring a 40 MHz CPU clock, 128 KB Flash memory, 12 KB RAM, dual CAN 2.0B interfaces, and a 24-channel 10-bit ADC with 3 µs conversion time-used in engine control units and industrial motion controllers.

For engineers reviewing the ST10F271Z1T3 datasheet, ST10F271Z1T3 pinout, ST10F271Z1T3 application, or ST10F271Z1T3 equivalent, key selection criteria include CAN bus timing compliance, Flash endurance (100K erase/program cycles), real-time interrupt latency (15.6 ns sampling), and LQFP144 package thermal performance in -40/+125°C environments.

Technical Context

This MCU integrates a DSP-enhanced 16-bit CPU with MAC unit (16×16 multiply + 40-bit accumulator), dual multi-functional timer units (5 timers total), two 16-channel CAPCOM units, and 4-channel PWM + 4-channel XPWM for precise motor phase control.

It supports dual CAN 2.0B operation (64-message or 2×32-message C-CAN), I²C, two synchronous/asynchronous serial channels, and high-speed synchronous serial interfaces-all synchronized to an on-chip PLL (4–8 MHz oscillator input) with 32 kHz RTC oscillator.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 × 1.4 mm) package with 111 general-purpose I/O lines-individually configurable as input, output, or alternate function (CAN, ASC, SSC, I²C, CAPCOM, PWM), each with programmable hysteresis threshold.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit automotive MCU applications.

Compared with ST10F271Z1T3, ST10F262Z1T3 reduces Flash and removes one CAN interface-suitable for cost-sensitive single-bus nodes-while C167CS-LM shifts CAN responsibility to software and external hardware, increasing validation effort and reducing real-time determinism.

Availability

ST10F271Z1T3 is available at Aetrix Electronics and suitable for engine control units, industrial motor drives, automotive body control modules, and railway signaling interfaces requiring stable component supply across extended temperature ranges.

Supply support for ST10F271Z1T3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, and automotive ICs with broad industrial and automotive qualification coverage.

The ST10 family was designed specifically for deterministic real-time control in harsh automotive and industrial environments-emphasizing CAN integration, Flash reliability, and fail-safe peripheral supervision.

FAQ

Is ST10F271Z1T3 pin-compatible with ST10F271Z1Q3?

Yes-both share identical pinout and electrical characteristics; the only difference is package type (LQFP144 vs. PQFP144) and maximum CPU frequency (40 MHz vs. 64 MHz). Thermal and mechanical mounting differ, but PCB layout and firmware are interchangeable.

Does ST10F271Z1T3 support CAN FD?

No-ST10F271Z1T3 implements CAN 2.0B only (ISO 11898-1), with bit rates up to 1 Mbps. It does not support CAN FD framing, data rate switching, or extended payload lengths beyond 8 bytes per frame.

What is the Flash endurance specification for ST10F271Z1T3?

The Flash memory is rated for 100,000 erase/program cycles per sector, verified under standard operating conditions (5 V ±10%, -40/+125°C). Endurance is maintained via on-chip erase/program controller with automatic wear leveling across sectors.

Can ST10F271Z1T3 operate without an external crystal?

Yes-it includes an on-chip 32 kHz oscillator for RTC and supports direct clock input (up to 40 MHz) on XTAL1. However, the PLL requires either an external 4–8 MHz crystal or precise external clock source to generate the main CPU clock.