STMicroelectronics STM32F101RDT6TR

Overview

STM32F101RDT6TR from STMicroelectronics is a high-density ARM® Cortex®-M3 32-bit microcontroller with 384 KB Flash, 48 KB SRAM, and 51 GPIOs in LQFP64 package. It integrates a 12-bit ADC (1 µs conversion), two 12-bit DACs, nine timers (including watchdogs and SysTick), and ten communication interfaces including 2×I²C, 3×SPI, and 3×USART. It targets industrial control panels requiring deterministic real-time response and analog signal conditioning.

For engineers reviewing the STM32F101RDT6TR datasheet, STM32F101RDT6TR pinout, STM32F101RDT6TR application, or STM32F101RDT6TR equivalent, key selection criteria include Flash/SRAM capacity, ADC/DAC resolution and speed, I/O count and 5 V-tolerance, low-power mode support (Stop/Standby with RTC on VBAT), and full SWD/JTAG debug accessibility.

Technical Context

The STM32F101RDT6TR implements the ARM Cortex-M3 core at up to 36 MHz with 1.25 DMIPS/MHz performance, single-cycle multiply, and hardware divide. Its memory subsystem includes 384 KB of embedded Flash (with ECC and 10K write/erase cycles), 48 KB SRAM, and a flexible static memory controller supporting NOR/PSRAM but not enabled in this 64-pin variant due to pin count constraints.

Clock architecture features dual oscillators: a 4–16 MHz external crystal input and an internal 8 MHz RC oscillator trimmed to ±1%, plus a 40 kHz RC for calibration and a dedicated 32.768 kHz RTC oscillator. Power management supports POR/PDR, programmable voltage detector (PVD), and three low-power modes-Sleep, Stop (with regulator active or low-power), and Standby-with VBAT backup for RTC and 42 backup registers.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; 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 STM32F101RDT6TR, STM32F103RBT6 trades Flash/SRAM capacity for cost savings in resource-constrained control, while STM32F072RBT6 shifts to Cortex-M0 with USB integration but sacrifices DAC, higher-resolution timing, and deterministic interrupt latency critical for motor control.

Availability

STM32F101RDT6TR is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor drive feedback units, and medical diagnostic modules requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F101RDT6TR 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, MEMS, and automotive semiconductors since 1987.

The STM32F101xx series belongs to ST's foundational access-line Cortex-M3 portfolio, engineered for cost-sensitive industrial and consumer applications demanding robust real-time performance, analog integration, and long-term supply assurance without feature bloat.

FAQ

What is the maximum operating frequency and associated power consumption of the STM32F101RDT6TR?

The STM32F101RDT6TR operates at up to 36 MHz with typical active current of 24 mA at 3.3 V and 36 MHz (code from Flash, peripherals enabled). At 8 MHz, active current drops to ~8 mA. These values are measured under defined conditions per Section 5.3.5 of the datasheet and assume proper PCB layout with recommended decoupling.

Does the STM32F101RDT6TR support hardware encryption or secure boot features?

No. The STM32F101RDT6TR does not include hardware cryptographic accelerators (AES, SHA, PKA) or tamper-detection circuitry. Secure boot must be implemented in software using the 96-bit unique ID and external secure element or trusted execution environment. Later series (e.g., STM32L4, STM32H7) provide dedicated security peripherals.

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

Yes. The factory-trimmed 8 MHz RC oscillator achieves ±1% accuracy across temperature and voltage and can serve as the main PLL input or direct system clock. It eliminates the need for an external crystal in cost-sensitive applications where timing precision < ±0.1% is acceptable, such as basic motor control or sensor polling.

How many channels does the 12-bit ADC support, and what is its effective sampling rate in practice?

The ADC supports up to 16 external channels plus internal temperature sensor and VREFINT. With 1 µs conversion time, it achieves up to 1 MSPS in single-channel mode. In sequenced multi-channel mode, total sampling rate depends on sequence length and sampling time configuration; practical throughput is ~700 kSPS for 8-channel sequences with minimal sampling time.