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STMicroelectronics STM32F101T6U6A
- Part No.:
- STM32F101T6U6A
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
STM32F101T6U6A.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 36VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,110
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Product details
Overview
STM32F101T6U6A from STMicroelectronics is a low-density ARM® Cortex®-M3 microcontroller in VFQFPN36 package, featuring 32 KB Flash, 6 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 STM32F101T6U6A datasheet, STM32F101T6U6A pinout, STM32F101T6U6A application, or STM32F101T6U6A equivalent, key selection factors include its 36-pin VFQFPN footprint, 32 KB Flash/6 KB SRAM memory configuration, 36 MHz Cortex-M3 core, integrated RTC with VBAT support, and 51 fast I/Os with 5 V tolerance on most pins.
Technical Context
The STM32F101T6U6A implements an ARM Cortex-M3 core with single-cycle multiplication and hardware division, executing at up to 36 MHz with 1.25 DMIPS/MHz performance. Its clock system includes dual oscillators (4–16 MHz HSE and 32 kHz LSE), internal 8 MHz RC, and PLL for flexible CPU and peripheral clock derivation.
It integrates a 7-channel DMA controller servicing timers, ADC, SPI, I²C, and USART peripherals; supports Sleep/Stop/Standby low-power modes with VBAT backup for RTC and registers; and provides serial wire debug (SWD) and JTAG for development.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 36 MHz max - enables deterministic real-time control with interrupt latency under 12 cycles. |
| Flash Memory | 32 KB - sufficient for firmware with protocol stacks (e.g., Modbus RTU over USART) and calibration data storage. |
| SRAM | 6 KB - supports moderate buffer requirements for UART DMA transfers or small real-time task stacks. |
| ADC | 1 × 12-bit, 1 µs conversion, up to 16 channels - suitable for analog sensor monitoring (e.g., thermistor, voltage scaling) with built-in temperature sensor. |
| Timers | Up to 5: two 16-bit general-purpose (IC/OC/PWM), two watchdogs (independent + window), SysTick - enables motor control PWM generation and safe timeout supervision. |
| Communication | 1×I²C (SMBus/PMBus), 2×USART (LIN/IrDA/ISO7816), 1×SPI (18 Mbit/s) - supports multi-sensor bus interfacing and legacy industrial protocols. |
| I/O Pins | 26 I/Os in VFQFPN36 package, nearly all 5 V-tolerant - simplifies level-shifting in mixed-voltage systems (e.g., 3.3 V MCU with 5 V sensors). |
| Supply Range | 2.0–3.6 V - compatible with single-cell Li-ion (3.0–3.6 V) or regulated 3.3 V rails without external LDO overhead. |
Pinout & Package
STM32F101T6U6A uses a 36-pin VFQFPN (6 × 6 mm, 0.5 mm pitch) package optimized for space-constrained PCB layouts. Pin functions align with STM32F101x6 family standard mapping, supporting full GPIO remapping and alternate function flexibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dedicated pairs for analog/digital domains; decoupling required per datasheet layout guidelines. |
| PA0–PA15, PB0–PB12, PC13–PC15 | General-purpose I/O | 26 total user-accessible pins; most support external interrupts and 5 V tolerance - enables direct connection to industrial sensors. |
| OSC_IN / OSC_OUT | HSE crystal interface | Supports 4–16 MHz quartz; critical for precise timing in communication or RTC applications. |
| NRST | Active-low reset input | Internal pull-up; accepts external push-button or supervisor IC assertion - ensures reliable power-on initialization. |
| BOOT0 | Boot mode selection | High at reset enters system memory bootloader; used for field firmware updates via USART without debugger. |
| VREF+, VREF−, VBAT | Analog reference and backup supply | VREF+ sets ADC reference; VBAT powers RTC and backup registers during main supply loss - enables timekeeping in battery-backed systems. |
Key Features
| Feature | Design Value |
|---|---|
| Serial Wire Debug (SWD) | Single-pin debug interface reduces PCB footprint vs. JTAG; supports full flash programming and real-time variable inspection. |
| Programmable Voltage Detector (PVD) | Monitors VDD and triggers interrupt before brownout - enables graceful shutdown or data save in low-voltage conditions. |
| CRC calculation unit | Hardware-accelerated CRC-32 computation - improves firmware integrity checks and communication frame validation efficiency. |
| 96-bit unique ID | Factory-programmed serial number - supports device authentication, license binding, or secure boot key derivation. |
| Temperature sensor | Integrated calibrated sensor (±1.5°C accuracy) - eliminates external component for ambient temperature monitoring in thermostats or fan controllers. |
Applications
| Smart Sensor Node | Industrial I/O Module |
|---|---|
Use Scenario: Compact environmental sensor node measuring temperature, humidity, and supply voltage in HVAC ducts. IC Role / Device Role / Timing Role: Main controller executing sensor polling, ADC sampling, and Modbus RTU transmission over USART. Use Value: 32 KB Flash stores protocol stack and calibration tables; 6 KB SRAM buffers multiple sensor readings; 5 V-tolerant I/O interfaces directly with legacy 5 V transducers. | Use Scenario: DIN-rail mounted digital input module converting 24 V DC field signals to isolated RS-485 output. IC Role / Device Role / Timing Role: Central logic unit managing opto-isolated inputs, status LED control, and half-duplex RS-485 communication via USART with automatic direction control. Use Value: Two independent watchdogs ensure fail-safe operation; Stop mode reduces standby current to <2.5 µA while retaining register state for rapid wake-up on input change. |
| Portable Medical Monitor | Home Appliance Control Board |
Use Scenario: Battery-powered pulse oximeter with OLED display and Bluetooth LE bridge (via UART-to-BLE module). IC Role / Device Role / Timing Role: System manager handling analog front-end (ADC), display SPI interface, and UART communication to BLE subsystem. Use Value: Internal 32 kHz RTC maintains time-of-measurement stamps; VBAT backup preserves session data across battery swaps; 36 MHz core processes SpO₂ algorithms in real time. | Use Scenario: Washing machine main control board managing motor drive signals, water valve actuation, and user interface keypad scanning. IC Role / Device Role / Timing Role: Primary MCU coordinating PWM motor control (TIM1), keypad scan (GPIO matrix), and UI communication (I²C to display driver). Use Value: Two 16-bit timers generate complementary PWM with dead-time insertion; 51 I/Os (26 accessible in T6U6A) support full keypad + LED + relay driver expansion without glue logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F030F4P6 | ARM Cortex-M0, 48 MHz, 16 KB Flash, 4 KB SRAM, no RTC or VBAT, VFQFPN20 | Lacks RTC, backup registers, and temperature sensor; lower peripheral count | Select when cost and size are primary constraints and RTC/timestamping is unnecessary. |
| STM32F103T6U6 | Same package and pinout; 64 KB Flash, 20 KB SRAM, higher USB/CAN integration capability | Pin-compatible upgrade path with extended memory and peripherals | Choose for future-proofing or when additional Flash/SRAM is needed for feature expansion. |
Compared with STM32F030F4P6, the STM32F101T6U6A offers superior real-time capability (Cortex-M3 vs M0), integrated RTC with VBAT, and richer analog/peripheral set; versus STM32F103T6U6, it trades Flash/SRAM capacity for lower cost and power in resource-constrained designs.
Availability
STM32F101T6U6A is available at Aetrix Electronics and suitable for smart sensor nodes, industrial I/O modules, portable medical monitors, and home appliance control boards requiring stable component supply and long-term manufacturability.
Supply support for STM32F101T6U6A 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, specializing in microcontrollers, power management, and sensing technologies for industrial, automotive, and consumer markets.
The STM32F101x6 series belongs to ST's low-density access line, designed specifically for cost-optimized, space-constrained embedded control applications where reliability, low power, and basic connectivity are essential.
FAQ
What is the maximum operating frequency of the STM32F101T6U6A?
The STM32F101T6U6A operates at a maximum CPU frequency of 36 MHz, achieved using its internal PLL driven by either the 4–16 MHz HSE crystal oscillator or the 8 MHz internal RC oscillator. This frequency delivers 1.25 DMIPS/MHz performance per Dhrystone 2.1 benchmark, enabling deterministic real-time execution in control loops and protocol processing.
Does the STM32F101T6U6A support hardware debugging?
Yes, the STM32F101T6U6A supports Serial Wire Debug (SWD) and full JTAG interfaces via dedicated SWDIO, SWCLK, and TMS/TCK/TDO/TDI pins. SWD requires only two pins and is fully supported by ST-LINK, SEGGER J-Link, and OpenOCD, enabling breakpoints, memory inspection, and flash programming without halting real-time operation.
Can the STM32F101T6U6A operate from a single 3.3 V supply?
Yes, the STM32F101T6U6A operates across a 2.0–3.6 V supply range, making it fully compatible with standard 3.3 V regulator outputs. All I/Os are 5 V-tolerant except for analog inputs (VREF+, ADC channels), allowing direct interfacing with 5 V sensors or logic without level shifters - provided analog inputs remain within 0–3.6 V.
Is the STM32F101T6U6A pin-compatible with other STM32F101 variants?
The STM32F101T6U6A shares the same VFQFPN36 package and pinout with all STM32F101Tx variants (e.g., STM32F101T4U6), differing only in Flash (32 KB vs 16 KB) and SRAM (6 KB vs 4 KB). It is not pin-compatible with LQFP48 or LQFP64 variants due to different package footprints and pin counts.
STM32F101T6U6A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 36-VFQFN Exposed Pad
- Series:
- STM32F1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 36MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT
- Number of I/O:
- 26
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 10x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F101T6U6A FAQ
1.How can I place an order for STM32F101T6U6A through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F101T6U6A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F101T6U6A reliable?
The price and inventory of STM32F101T6U6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F101T6U6A is usually 5 days.
3.What payment methods are accepted for STM32F101T6U6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F101T6U6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F101T6U6A?
STM32F101T6U6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F101T6U6A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F101T6U6A?
For technical support, including STM32F101T6U6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F101T6U6A requirements.
6.How does Aetrix verify that STM32F101T6U6A is sourced from the original manufacturer or authorized distributors?
All STM32F101T6U6A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F101T6U6A meets industry standards.
7.What is the process for return or replacement of STM32F101T6U6A?
All STM32F101T6U6A units undergo pre-shipment inspection (PSI). If there is an issue with STM32F101T6U6A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F101T6U6A part is unused and in its original packaging.
Return procedure for STM32F101T6U6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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