STMicroelectronics STR750FV1T6

Overview

STR750FV1T6 from STMicroelectronics is a 32-bit ARM7TDMI-S™ microcontroller with 128 KB Flash (Bank 0), 16 KB RWW Flash (Bank 1), 16 KB SRAM, integrated CAN 2.0B and USB Full-Speed interfaces, and a motor-control-optimized 6-channel PWM timer - deployed in industrial motor drives, programmable logic controllers, and UPS systems operating at 3.3 V or 5 V.

For engineers reviewing the STR750FV1T6 datasheet, STR750FV1T6 pinout, STR750FV1T6 application, or STR750FV1T6 equivalent, key selection criteria include dual-voltage operation (3.3 V/5 V), CAN+USB coexistence in LQFP100 packages, 60 MHz CPU performance (54 DMIPS), 10-bit ADC with 3.75 µs min conversion time, and support for real-time clock with auto-wake-up from STOP mode.

Technical Context

The STR750FV1T6 implements an ARM7TDMI-S core with Harvard-style memory architecture, supporting burst-mode Flash access (0 wait states @ 60 MHz) and zero-wait-state SRAM. Its nested interrupt controller delivers 32 vectors and 16 IRQ priorities with sub-1 µs latency for critical events like CAN message reception or ADC end-of-conversion.

It integrates a dedicated motor-control PWM timer with dead-time generation, edge/center-aligned waveform control, and emergency stop capability - synchronized via Timer Link with three 16-bit standard timers (TIM0–TIM2), each supporting input capture and output compare on remappable I/O pins.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad. Pinout validated per STMicroelectronics Doc ID13592 Rev 5 (pages 15–21).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit ARM-based microcontroller applications.

Compared with STM32F103C8T6 and LPC2368, the STR750FV1T6 uniquely combines CAN 2.0B and USB Full-Speed in a single LQFP64 package with integrated 48 MHz clock synthesis and motor-optimized PWM - reducing external component count and simplifying certification for industrial motion control.

Availability

STR750FV1T6 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and uninterruptible power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STR750FV1T6 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 vertical manufacturing capabilities.

The STR750 family was designed specifically for industrial real-time control applications demanding CAN, USB, high-resolution PWM, and dual-voltage operation - bridging legacy ARM7 ecosystems with robust peripheral integration.

FAQ

Does STR750FV1T6 support simultaneous CAN and USB operation?

Yes - in the LQFP64 package (STR750FV1T6), CAN and USB share pins and cannot operate concurrently. However, the device supports CAN-only or USB-only modes via software configuration. For full concurrent operation, ST recommends STR755FV2 (LQFP100) which physically separates CAN_RX/TX and USB_DP/DM pins.

What is the maximum ADC sampling rate achievable with DMA?

The STR750FV1T6's 10-bit ADC achieves a minimum conversion time of 3.75 µs, enabling up to 266 kSPS in continuous scan mode. When paired with DMA channel 3, it sustains this rate without CPU intervention - verified in ST Application Note AN2834 using TIM2-triggered conversions and circular buffer transfers to SRAM.

How is the 48 MHz USB clock generated without an external crystal?

The internal PLL multiplies the 4 MHz or 8 MHz crystal input to generate both the 60 MHz AHB clock and a dedicated 48 MHz USB clock. This is achieved via a fractional divider stage within the clock controller - eliminating need for a second crystal while maintaining USB Full-Speed timing compliance per USB-IF specifications.

Can the STR750FV1T6 operate in STOP mode with RTC running and SRAM retention?

Yes - in STOP mode, the STR750FV1T6 retains SRAM and register contents while disabling the PLL, main oscillator, and AHB/APB clocks. The RTC remains active when powered by V18_BKP (backed by coin cell or supercapacitor), generating wake-up interrupts on alarm or periodic match - measured quiescent current is 1.2 µA at 25 °C.