STMicroelectronics STM32F101RGT6TR

Overview

STM32F101RGT6TR from STMicroelectronics is an ARM® Cortex®-M3 32-bit microcontroller with 1 MB Flash, 80 KB SRAM, and operating frequency up to 36 MHz. It integrates 1×12-bit ADC (16-channel), 2×12-bit DACs, 15 timers (including watchdogs and SysTick), and 10 communication interfaces (3×SPI, 2×I²C, 3×USART, USB, CAN). It serves as a main application controller in industrial HMI panels requiring real-time sensor acquisition, local display control via parallel LCD interface, and fieldbus connectivity.

For engineers reviewing the STM32F101RGT6TR datasheet, STM32F101RGT6TR pinout, STM32F101RGT6TR application, or STM32F101RGT6TR equivalent, key selection criteria include Flash size (1 MB), dual-bank read-while-write capability, 112 I/O count with 5 V tolerance, FSMC support for NOR/PSRAM expansion, and integrated temperature sensor with ±1.5°C accuracy over –40°C to +85°C.

Technical Context

The device implements a tightly coupled ARM Cortex-M3 core with Memory Protection Unit (MPU), enabling secure task isolation in multitasking embedded firmware. Its clock system combines four oscillator sources - 4–16 MHz HSE crystal, 32.768 kHz LSE for RTC, factory-trimmed 8 MHz HSI, and 40 kHz LSI - feeding a programmable PLL for precise 36 MHz system clock generation.

Peripheral integration centers on deterministic real-time control: 10 timers include four 16-bit general-purpose units with input capture/output compare/PWM, two basic timers dedicated to DAC triggering, and independent/window watchdogs. The FSMC supports asynchronous/synchronous memory protocols across four chip selects, enabling direct interface to external displays, NAND/NOR flash, or PSRAM.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Pin count and function mapping align with STM32F101xG series standard layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit ARM Cortex-M3 microcontroller applications.

Compared with STM32F103VCT6, the STM32F101RGT6TR offers larger Flash and FSMC for display/memory expansion but omits USB OTG; versus STM32F072RBT6, it delivers higher compute throughput and analog integration at the expense of power efficiency and bill-of-materials simplicity.

Availability

STM32F101RGT6TR is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and ECOPACK® environmental compliance.

Supply support for STM32F101RGT6TR 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 management ICs, sensors, and automotive-grade components since 1987.

The STM32F101xG series targets cost-optimized industrial control applications demanding high peripheral integration, deterministic real-time response, and extended temperature operation (–40°C to +85°C) without sacrificing Flash density or I/O flexibility.

FAQ

What is the maximum operating frequency and corresponding power consumption of STM32F101RGT6TR?

The device operates at up to 36 MHz with typical active current of 36 mA at 3.6 V (code from Flash, all peripherals enabled). At 8 MHz, current drops to ~12 mA under identical conditions. These values are measured per datasheet Table 14 and validated across temperature range –40°C to +85°C using the test setup in Figure 10.

Does STM32F101RGT6TR support external memory interfaces beyond FSMC?

No - the only external memory interface is the Flexible Static Memory Controller (FSMC), which supports NOR, PSRAM, NAND, and CompactFlash in asynchronous/synchronous modes. It does not include SDIO, Quad-SPI, or Octo-SPI controllers. External DDR or SDRAM requires external logic or a higher-tier MCU like STM32H7.

Can the internal temperature sensor be used for system-level thermal monitoring?

Yes - the calibrated on-die sensor provides ±1.5°C accuracy from –40°C to +85°C (Table 61). Its output connects to ADC1_IN16; conversion yields temperature via formula T(°C) = (V25 – VSENSE) / Avg_Slope + 25, where V25 = 1.41 V and Avg_Slope = 4.3 mV/°C, per Section 2.3.25.

Is STM32F101RGT6TR pin-compatible with other STM32F101xx variants?

Yes - within the same package variant (LQFP64), STM32F101RGT6TR shares identical pinout with STM32F101RG, STM32F101RF, and STM32F101RB. Differences are limited to Flash size (1 MB vs. 256 KB/512 KB) and peripheral enablement, verified in Table 1 and Section 2.2 of the datasheet.