STMicroelectronics STM32F103RGT6TR

Overview

STM32F103RGT6TR from STMicroelectronics is an ARM® Cortex®-M3 based 32-bit microcontroller in LQFP64 package, featuring 768 KB Flash, 96 KB SRAM, USB 2.0 full-speed interface, CAN 2.0B controller, and three 12-bit ADCs with 21 channels - deployed in industrial motor control, PLC I/O modules, and embedded HMI systems.

For engineers reviewing the STM32F103RGT6TR datasheet, STM32F103RGT6TR pinout, STM32F103RGT6TR application, or STM32F103RGT6TR equivalent, key selection criteria include Flash/SRAM capacity, USB+CAN dual-interface support, 72 MHz real-time execution, and 51 GPIOs with 5 V tolerance for robust industrial interfacing.

Technical Context

The device implements a tightly coupled ARM Cortex-M3 core with Memory Protection Unit (MPU), supporting deterministic interrupt latency and memory isolation. It integrates a flexible static memory controller (FSMC) with four chip selects for NOR/PSRAM/NAND expansion and parallel LCD interface in 8080/6800 modes.

Clock architecture includes dual oscillators (4–16 MHz HSE + 32 kHz LSE), programmable PLL, and three internal RC sources (8 MHz HSI, 40 kHz LSI, calibrated 32 kHz RTC oscillator), enabling precise timing for USB frame sync, RTC calendar, and low-power wake-up sequences.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F103VCT6, the RGT6TR trades pin count and Flash for compact LQFP64 footprint and lower BOM cost; versus STM32F401RET6, it retains CAN and deterministic M3 interrupt latency at the expense of FPU and higher clock speed - making it optimal for cost-sensitive, CAN-centric industrial nodes.

Availability

STM32F103RGT6TR is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, embedded HMI terminals, and USB-CAN diagnostic tools requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F103RGT6TR 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 analog devices for industrial, automotive, and consumer markets.

The STM32F103x series belongs to ST's mainstream performance-line MCUs, engineered specifically for cost-sensitive, real-time industrial control applications requiring rich analog integration, USB/CAN connectivity, and deterministic Cortex-M3 execution.

FAQ

What is the maximum operating frequency and associated power consumption in Run mode?

The STM32F103RGT6TR operates at up to 72 MHz with typical active current of 36 mA at 72 MHz, 3.3 V, and code executing from Flash (measured per datasheet Table 14). This includes all peripherals disabled except core and SysTick; adding USB or ADC increases consumption by 5–12 mA depending on activity.

Does this MCU support hardware CRC calculation and unique device identification?

Yes - it includes a dedicated CRC calculation unit compliant with CRC-32 (IEEE 802.3) and a factory-programmed 96-bit unique ID accessible via system memory. These features enable secure firmware signature verification and device-specific licensing without external security ICs.

Can the internal 8 MHz RC oscillator be used as the system clock source without external crystals?

Yes - the 8 MHz HSI oscillator is factory-trimmed to ±1% accuracy and can serve as the main clock source. However, USB and CAN require precise timing; for those interfaces, an external 4–16 MHz crystal (HSE) or PLL derivation from HSE is mandatory per USB 2.0 and CAN 2.0B specifications.

What debug interfaces are supported and what are their physical pin requirements?

It supports Serial Wire Debug (SWD) using SWCLK and SWDIO pins (PA14/PA13), and full JTAG via TMS/TCK/TDI/TDO/TRESET (PA15/PB3/PB4/PB5/PA13). SWD requires only two pins and is recommended for space-constrained designs; JTAG enables full trace but consumes five pins and more PCB area.