STMicroelectronics STR752FR0T6

Overview

STR752FR0T6 from STMicroelectronics is an ARM7TDMI-S™ 32-bit microcontroller with 256 KB Flash (Bank 0), 16 KB RWW Flash (Bank 1), 16 KB SRAM, integrated CAN 2.0B interface, USB Full-Speed (12 Mb/s), and a 6-channel motor-control PWM timer supporting dead-time insertion and center-aligned waveforms - deployed in industrial motor drives and embedded control systems requiring deterministic real-time response.

For engineers reviewing the STR752FR0T6 datasheet, STR752FR0T6 pinout, STR752FR0T6 application, or STR752FR0T6 equivalent, key selection criteria include its dual-voltage operation (3.3V/5V), 60 MHz CPU performance (54 DMIPS), 16-bit ADC with 3.75 µs min conversion time, 72 GPIOs with atomic bit-set/reset, and LQFP64 package compatibility with legacy STR75x designs.

Technical Context

The STR752FR0T6 integrates an ARM7TDMI-S core with tightly coupled peripherals including a nested interrupt controller (32 vectors, 16 IRQ priorities), 4-channel DMA supporting UART0, SSP0, PWM, TIM0, and ADC transfers, and a Serial Memory Interface (SMI) enabling boot-from-external-serial-Flash capability up to 64 MB.

Its clock system combines an internal 5 MHz RC oscillator for fast wake-up, a PLL supporting 60 MHz AHB/48 MHz USB/30 MHz APB derivation from 4–8 MHz crystals, and independent RTC clocking via 32.768 kHz crystal or calibrated low-power RC - all managed through SLOW, WFI, STOP, and STANDBY low-power modes with backup register retention.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, rated for -40°C to +85°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ARM7-based microcontroller applications.

Compared with STR751FR0T6, STR752FR0T6 adds guaranteed CAN+USB coexistence in LQFP64; compared with STR755FR0T6, it trades package size and extended temp rating for pin-compatible drop-in replacement in space-constrained industrial modules.

Availability

STR752FR0T6 is available at Aetrix Electronics and suitable for industrial motor drives, smart energy meters, programmable logic controllers, and medical infusion pumps requiring stable component supply, long-lifecycle support, and verified automotive-grade reliability under extended temperature stress.

Supply support for STR752FR0T6 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, sensors, and automotive ICs with vertical manufacturing and broad industrial certification coverage.

The STR750 family was designed for deterministic real-time embedded control in harsh environments - emphasizing motor drive timing precision, fieldbus interoperability (CAN/USB), and robust flash endurance (10k/100k write cycles) for industrial firmware longevity.

FAQ

Does STR752FR0T6 support simultaneous CAN and USB operation in LQFP64 package?

Yes - unlike STR751FR0T6, the STR752FR0T6 variant explicitly supports concurrent CAN 2.0B and USB Full-Speed operation in the LQFP64 package, as confirmed by ST's device overview table and pin multiplexing documentation. This enables unified fieldbus and host-interface functionality without external arbitration logic.

What is the maximum ADC sampling rate achievable with DMA and scan mode?

In scan mode with DMA, the STR752FR0T6 achieves up to 267 kSPS aggregate throughput across 11 channels (3.75 µs minimum conversion time per sample). The ADC trigger can be synchronized to PWM timer events, enabling precise current sampling at motor commutation points without CPU intervention.

How does the Read-While-Write Flash bank function in real-time applications?

The 16 KB RWW Flash (Bank 1) allows firmware to execute from Bank 0 while concurrently erasing/programming Bank 1 - enabling safe over-the-air updates of calibration tables or control parameters during live motor operation without halting real-time tasks or losing state.

Is external crystal mandatory for USB operation?

No - USB requires a precise 48 MHz clock, derived internally from the main PLL fed by a 4 MHz or 8 MHz crystal/ceramic resonator. The internal RC oscillator cannot meet USB timing jitter requirements; therefore, an external 4/8 MHz source is mandatory for USB functionality.