STMicroelectronics ST10F276-4TR3

Overview

ST10F276-4TR3 from STMicroelectronics is a 16-bit microcontroller with MAC unit, 512 KB Flash memory (32-bit fetch), 66 KB XRAM, and dual CAN 2.0B interfaces. It features a 64 MHz max CPU clock (31.25 ns instruction cycle), 24-channel 10-bit ADC (3 µs conversion), and 111 GPIO lines. Used in industrial motor control systems requiring real-time DSP-enhanced computation and dual-bus CAN communication.

For engineers reviewing the ST10F276-4TR3 datasheet, ST10F276-4TR3 pinout, ST10F276-4TR3 application, or ST10F276-4TR3 equivalent, key selection criteria include MAC-accelerated signal processing capability, on-chip 32 kHz RTC oscillator, programmable external bus with 5 chip-selects, and fail-safe watchdog/oscillator watchdog support for safety-critical embedded control.

Technical Context

The ST10F276-4TR3 implements a high-performance 16-bit CPU with dedicated 16×16-bit MAC unit and 40-bit accumulator, enabling single-cycle multiply-accumulate operations essential for motor control algorithms. Its interrupt system supports 56 sources across 16 priority levels with 15.6 ns sampling resolution.

It integrates two independent CAN 2.0B controllers (C-CAN version) supporting either 64-message single-bus or 2×32-message dual-bus configurations, alongside two synchronous/asynchronous serial channels, I²C, and high-speed synchronous serial interfaces - all managed via shared peripheral event controller for deterministic data transfer.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 × 1.4 mm) low-profile plastic quad flat package with 144 leads; RoHS-compliant ECOPACK® packaging.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit industrial microcontroller applications.

Compared with C167CR-LM and S12XEP100, the ST10F276-4TR3 uniquely delivers MAC-accelerated control, dual CAN 2.0B with C-CAN architecture, and 24-channel 10-bit ADC in a single LQFP144 package - making it optimal for space-constrained, safety-aware industrial drives where computational throughput and bus redundancy are non-negotiable.

Availability

ST10F276-4TR3 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, programmable logic controllers, and energy metering gateways requiring stable component supply across extended product lifecycles.

Supply support for ST10F276-4TR3 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade components since 1987.

The ST10 family was developed specifically for real-time industrial control applications demanding deterministic interrupt response, on-chip DSP acceleration, and robust communication interfaces - targeting motor drives, PLCs, and automotive body electronics.

FAQ

What is the maximum operating frequency and corresponding instruction cycle time of the ST10F276-4TR3?

The ST10F276-4TR3 operates at a maximum CPU clock frequency of 64 MHz, delivering a 31.25 ns instruction cycle time. This performance is achieved using the on-chip PLL with a 4–12 MHz external crystal or clock source, and supports real-time execution of complex control algorithms without external clock multiplication.

Does the ST10F276-4TR3 support in-system programming via CAN or UART?

Yes - the device includes an on-chip bootstrap loader supporting firmware updates via UART (RS232 or K-Line) and CAN interfaces. The CAN bootloader allows field reprogramming over existing vehicle or industrial networks without physical access, using configurable baud rates and message-based command protocols defined in the reference manual.

How many CAN interfaces does the ST10F276-4TR3 integrate, and what protocol versions are supported?

The ST10F276-4TR3 integrates two fully independent CAN 2.0B-compliant controllers (C-CAN version). Each supports standard and extended identifiers, message objects with hardware acceptance filtering, and configurable message RAM sizes - enabling operation on one physical bus (64 messages) or two separate buses (2×32 messages).

What power-saving modes are available, and which retain RTC functionality?

The ST10F276-4TR3 offers Idle, Power Down, and Stand-by modes. Only Stand-by mode retains real-time clock operation using the on-chip 32 kHz oscillator, allowing wake-up via alarm or external interrupt while consuming <10 µA. In Stand-by, the CPU, Flash, and most peripherals are disabled, but RTC registers and backup RAM remain powered.