STMicroelectronics STM32F101T4U6A

Overview

STM32F101T4U6A 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 16 channels, and four communication interfaces (1×I²C, 2×USART, 1×SPI). It operates from 2.0–3.6 V and supports Sleep/Stop/Standby low-power modes - deployed in compact industrial sensor nodes requiring integrated analog sensing and serial connectivity.

For engineers reviewing the STM32F101T4U6A datasheet, STM32F101T4U6A pinout, STM32F101T4U6A application, or STM32F101T4U6A equivalent, key selection considerations include VFQFPN36 footprint constraints, 16-channel ADC input routing, 36 MHz timing margin for real-time control loops, and I²C/SPI/USART peripheral coexistence on shared GPIO banks.

Technical Context

The STM32F101T4U6A implements an ARM Cortex-M3 core with single-cycle multiplication and hardware division, executing at up to 36 MHz with zero-wait-state Flash access. Its clock system integrates a 4–16 MHz external crystal oscillator, factory-trimmed 8 MHz RC, 40 kHz RC, PLL for CPU clock generation, and dedicated 32 kHz RTC oscillator with calibration.

Peripheral architecture includes a 7-channel DMA controller servicing timers, ADC, SPI, I²C, and USARTs; nested vectored interrupt controller (NVIC) supporting 48 interrupts; and EXTI managing 16 external interrupt/event lines mapped across all GPIO ports. The 12-bit ADC achieves 1 µs conversion time across 0–3.6 V range and integrates a calibrated temperature sensor.

Key Specifications

Pinout & Package

VFQFPN36 package: 36-pin, 6 × 6 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant ECOPACK®.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F101T4U6A, STM32F030F4P6 trades RTC and analog features for lower cost and power, while STM32F103T4U6 offers direct pin- and code-compatible Flash/SRAM headroom - making it the preferred upgrade for production scalability.

Availability

STM32F101T4U6A is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interface modules, home automation actuators, and medical diagnostic peripherals requiring stable component supply and long-term manufacturability.

Supply support for STM32F101T4U6A 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 semiconductors.

The STM32F101x4 series belongs to ST's low-density access line - engineered for cost-sensitive, space-constrained embedded applications demanding robust analog integration, multiple serial interfaces, and industrial-grade reliability.

FAQ

What is the maximum operating frequency and associated power consumption of the STM32F101T4U6A?

The STM32F101T4U6A runs at up to 36 MHz with zero wait states on Flash. At 36 MHz and 3.3 V, typical active current is 19 mA (code from Flash, peripherals enabled), dropping to 1.5 µA in Standby mode with RTC active and VBAT supplied. These values are measured per datasheet conditions in Section 5.3.5.

Does the STM32F101T4U6A support hardware debug interfaces, and which ones are implemented?

Yes - it integrates Serial Wire Debug (SWD) and JTAG interfaces via dedicated pins (SWDIO, SWCLK, NRST). SWD uses only two pins and is the recommended interface for programming and real-time debugging; JTAG is fully supported but requires five pins and is less common in production programming fixtures.

How many ADC channels are accessible in the VFQFPN36 package, and what is their input voltage range?

The VFQFPN36 package exposes 16 ADC input channels (ADC1_IN0 through ADC1_IN15) on GPIO pins PA0–PA7, PB0–PB1, and PC0–PC5. The ADC accepts 0–3.6 V analog inputs with 12-bit resolution and 1 µs conversion time, and includes an internal temperature sensor connected to ADC1_IN16.

Is the STM32F101T4U6A pin-compatible with other members of the STM32F101xx family?

Yes - all STM32F101T4U6A, STM32F101T6U6, STM32F101C4T6, and STM32F101C6T6 variants share identical VFQFPN36 pinout and electrical characteristics. Differences lie solely in Flash (16 KB vs 32 KB) and SRAM (4 KB vs 6 KB) capacity - enabling drop-in replacement within same density group.