STMicroelectronics STM32F101T4U6ATR

Overview

STM32F101T4U6ATR from STMicroelectronics is a low-density ARM® Cortex®-M3 microcontroller in VFQFPN36 package, featuring 16 KB Flash, 4 KB SRAM, 36 MHz max CPU frequency, 12-bit ADC with temperature sensor, and four communication interfaces (1×I²C, 2×USART, 1×SPI). It targets cost-sensitive embedded control applications such as smart sensors and industrial I/O modules.

For engineers reviewing the STM32F101T4U6ATR datasheet, STM32F101T4U6ATR pinout, STM32F101T4U6ATR application, or STM32F101T4U6ATR equivalent, key selection criteria include Flash/SRAM size, VFQFPN36 footprint compatibility, 5 V-tolerant I/O count (26 pins), RTC+VBAT support, and SWD debug interface availability.

Technical Context

This MCU implements an ARM Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide. Its clock system integrates dual oscillators (8 MHz HSI ±1%, 32 kHz LSE), programmable PLL, and PVD for supply monitoring - enabling deterministic real-time operation across industrial temperature ranges.

The peripheral set includes seven-channel DMA servicing timers, ADC, USARTs, SPI, and I²C; five timers (two 16-bit general-purpose, two watchdogs, SysTick); and 26 GPIOs - all mappable to 16 external interrupt vectors and supporting 5 V tolerance on most pins.

Key Specifications

Pinout & Package

VFQFPN36 (6 × 6 mm, 0.5 mm pitch) - ultra-compact, thermally enhanced quad flat no-lead package ideal for space-constrained PCBs in consumer and industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, this part adds RTC+VBAT persistence and factory-calibrated temperature sensing; compared with STM32F103T4U6, it trades 16 KB less Flash and 2 KB less SRAM for lower unit cost in resource-constrained deployments.

Availability

STM32F101T4U6ATR is available at Aetrix Electronics and suitable for smart sensor nodes, industrial I/O modules, consumer appliance controllers, and portable medical peripherals requiring stable component supply and long-term industrial lifecycle support.

Supply support for STM32F101T4U6ATR 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, MEMS, and automotive semiconductors since 1987.

The STM32F101x4 series belongs to ST's foundational Cortex-M3 portfolio, engineered for cost-optimized, low-power embedded control in industrial, consumer, and medical edge devices where small footprint and analog integration are critical.

FAQ

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

STM32F101T4U6ATR operates up to 36 MHz with typical active current of 13.5 mA at 3.6 V and 36 MHz (code from Flash, peripherals enabled). At 8 MHz, consumption drops to ~5.5 mA under identical conditions - enabling dynamic frequency scaling for power optimization.

Does this MCU support hardware encryption or secure boot features?

No. STM32F101T4U6ATR lacks dedicated cryptographic accelerators, TRNG, or secure boot ROM. It provides only a 96-bit unique ID for device identification. For secure firmware validation, external secure elements or software-based hash verification must be implemented.

Can the ADC measure negative voltages or accept bipolar input ranges?

No. The ADC input range is strictly 0 to VREF+ (typically 0 to 3.6 V). Negative voltages or bipolar signals require external signal conditioning (e.g., level-shifting op-amp circuitry) before connection to ADC input pins.

Is the VFQFPN36 package compatible with standard reflow soldering profiles?

Yes. The VFQFPN36 package complies with JEDEC J-STD-020 moisture sensitivity level 3 and supports standard Pb-free reflow profiles (peak temperature ≤260 °C, time above liquidus 60–90 s). Board layout must follow ST's recommended thermal pad grounding and stencil aperture guidelines.