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STMicroelectronics STM32F101R6T6
- Part No.:
- STM32F101R6T6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F101R6T6.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,524
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Product details
Overview
STM32F101R6T6 from STMicroelectronics is a low-density ARM® Cortex®-M3 microcontroller with 32 KB Flash, 6 KB SRAM, 36 MHz max CPU frequency, 12-bit ADC (1 µs conversion), and 4 communication interfaces (I²C, 2×USART, SPI). It operates from 2.0–3.6 V, supports Sleep/Stop/Standby low-power modes, and integrates RTC with VBAT backup-used in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the STM32F101R6T6 datasheet, STM32F101R6T6 pinout, STM32F101R6T6 application, or STM32F101R6T6 equivalent, key selection criteria include Flash/SRAM size, 51 I/O count with 5 V tolerance, 16-channel ADC resolution, and LQFP64 package compatibility for space-constrained PCB layouts.
Technical Context
The STM32F101R6T6 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 a 4–16 MHz external crystal oscillator, 8 MHz internal RC, 40 kHz LSI, and PLL for CPU clock generation.
Peripheral integration centers on deterministic real-time operation: 5 timers (including two 16-bit general-purpose, independent/window watchdogs, SysTick), 7-channel DMA supporting ADC, USART, SPI, and I²C, and a 12-bit ADC with temperature sensor and 0–3.6 V input range-all accessible via 51 GPIOs, nearly all 5 V-tolerant and mappable to 16 external interrupt vectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 36 MHz max - enables deterministic real-time control with 1.25 DMIPS/MHz efficiency |
| Flash Memory | 32 KB - sufficient for firmware with basic protocol stacks and sensor processing logic |
| SRAM | 6 KB - supports moderate data buffering and stack depth for RTOS or bare-metal multitasking |
| ADC | 12-bit, 1 µs conversion, 16 channels - delivers 12-bit precision sampling at up to 1 MSPS for analog sensor interfacing |
| Timers | 5 total: 2×16-bit general-purpose, 2×watchdog (independent/window), 1×SysTick - provides PWM generation, time-critical event capture, and system-level fault recovery |
| Communication | 1×I²C, 2×USART, 1×SPI - supports sensor networks (I²C), serial diagnostics/modem (USART), and high-speed peripheral bridging (SPI @ 18 Mbit/s) |
| I/O Count | 51 pins, nearly all 5 V-tolerant - simplifies level-shifting in mixed-voltage systems and eases interface to legacy peripherals |
| Supply Range | 2.0–3.6 V - compatible with single-cell Li-ion, 3.3 V LDOs, and industrial 3.3 V rails without external regulators |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power/ground pairs ensure stable core and I/O rail decoupling; supports 2.0–3.6 V operation |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 51 total GPIOs; most are 5 V-tolerant and support alternate functions (timers, USART, SPI, I²C) |
| OSC_IN / OSC_OUT | External crystal oscillator input/output | Supports 4–16 MHz quartz crystals for precise clocking; essential for USB-free timing-critical applications |
| NVIC IRQ lines | Interrupt request inputs | 16 external interrupt vectors mapped across GPIOs enable fast response to edge-triggered events |
| BOOT0 | Boot mode selection | Configures boot source (system memory, Flash, SRAM); critical for in-field firmware updates and debug entry |
| NRST | Reset input | Active-low reset with internal pull-up; accepts 5 V-tolerant signal for robust system-level reset coordination |
| VREF+, VREF- | ADC reference voltage inputs | Enable external reference for improved ADC accuracy; default to VDD/VSS if unconnected |
| VBAT | RTC/backup register supply | Accepts coin-cell or supercap input to maintain RTC and 4 KB backup SRAM during main power loss |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 core | 36 MHz operation with hardware divide and single-cycle multiply - reduces instruction count for math-intensive control loops |
| Low-power modes | Sleep, Stop, Standby with VBAT-backed RTC - achieves sub-µA standby current for multi-year battery life in remote sensors |
| DMA controller | 7-channel, peripheral-linked - offloads CPU from ADC sampling, UART TX/RX, and SPI transfers, enabling zero-wait-state data movement |
| Temperature sensor | Integrated on-die sensor calibrated against VREFINT - enables ambient or die-temperature monitoring without external components |
| CRC calculation unit | Hardware-accelerated CRC-32 - ensures fast, deterministic integrity checks for firmware updates and data logging |
| 96-bit unique ID | Factory-programmed serial number - supports secure device authentication and license binding in OEM deployments |
Applications
| Industrial Sensor Node | Smart Home Controller |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and air quality over LoRaWAN. IC Role / Device Role / Timing Role: Main system controller executing sensor fusion, data preprocessing, and wireless stack management; RTC maintains accurate timestamping between transmissions. Use Value: 6 KB SRAM buffers multiple sensor readings; 32 KB Flash hosts lightweight LoRa MAC and sensor drivers; low-power Stop mode extends battery life to >5 years. | Use Scenario: Wall-mounted HVAC controller with touch interface, local logic, and cloud connectivity via Wi-Fi module. IC Role / Device Role / Timing Role: Central MCU managing UI polling, relay actuation, and UART-based communication with Wi-Fi SoC; SysTick enables precise 10 ms UI refresh timing. Use Value: 51 GPIOs drive capacitive touch keys and status LEDs; 2×USART supports debug console and Wi-Fi AT command interface; 5 V-tolerant I/O eliminates level-shifters for legacy IR receivers. |
| Medical Diagnostic Tool | PLC I/O Module |
Use Scenario: Portable blood glucose meter with LCD display, button interface, and USB charging/data export. IC Role / Device Role / Timing Role: Primary processor handling analog front-end (ADC) sampling of electrochemical sensor, LCD driver, and USB CDC virtual COM port emulation. Use Value: 12-bit ADC achieves ±1 LSB INL for clinical-grade measurement; integrated temperature sensor compensates for sensor drift; VBAT backup preserves calibration data during battery swaps. | Use Scenario: DIN-rail mounted digital I/O expansion module for industrial PLCs, accepting 24 V DC inputs and driving relay outputs. IC Role / Device Role / Timing Role: Isolation-aware interface controller translating optocoupled 24 V signals to 3.3 V logic; manages watchdog supervision and cyclic redundancy checking of I/O state packets. Use Value: 5 V-tolerant GPIOs directly interface with 24 V optocoupler outputs; CRC unit validates fieldbus packet integrity; independent watchdog prevents lockup during EMI events. |
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 VBAT/RTC, 15 GPIOs | Lacks RTC, backup registers, and VBAT support; fewer timers and no temperature sensor | Select when cost sensitivity outweighs RTC and sensor features; requires external RTC for timekeeping |
| STM32F103C8T6 | Same Cortex-M3 core, 64 KB Flash, 20 KB SRAM, enhanced peripherals (USB, CAN), 37 GPIOs in LQFP48 | Higher Flash/SRAM, USB 2.0 FS, CAN 2.0B, but smaller I/O count and no VBAT on all variants | Choose when USB host/device or CAN bus is required; verify VBAT availability in specific variant (e.g., STM32F103CBT6) |
Compared with STM32F030F4P6, the STM32F101R6T6 offers superior real-time capability via Cortex-M3 and integrated RTC/backup; versus STM32F103C8T6, it trades USB/CAN for higher I/O count and guaranteed VBAT support-making it optimal for battery-backed, I/O-intensive industrial sensing.
Availability
STM32F101R6T6 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, medical diagnostic tools, and PLC I/O modules requiring stable component supply across extended production lifecycles.
Supply support for STM32F101R6T6 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, sensors, and automotive semiconductors since 1987.
The STM32F101x6 belongs to the STM32F1 Access Line-a cost-optimized, low-power Cortex-M3 series targeting resource-constrained embedded applications where Flash size, I/O count, and RTC reliability are prioritized over USB or CAN.
FAQ
What is the maximum operating frequency and associated power consumption of the STM32F101R6T6?
The STM32F101R6T6 runs at up to 36 MHz with 1.25 DMIPS/MHz performance. At 36 MHz and 3.3 V, typical active current is 24 mA (code from Flash, peripherals enabled); in Stop mode with regulator in Low-power mode, it draws 3.5 µA at 25°C. These values are measured per datasheet Table 12 and Table 15 under defined thermal conditions.
Does the STM32F101R6T6 support external memory interfaces or NAND/SDRAM controllers?
No. The STM32F101R6T6 lacks FSMC (Flexible Static Memory Controller) or external bus interface. It is designed for standalone operation with on-chip Flash and SRAM only. External memory expansion requires external glue logic or migration to STM32F103 or F2/F4 series with FSMC support.
Can the integrated temperature sensor be used for ambient temperature measurement?
Yes-the on-die temperature sensor is factory-calibrated and referenced to VREFINT. When combined with the 12-bit ADC and documented calibration values (VSENSE at 25°C = 1.43 V, Avg. slope = 4.3 mV/°C), it achieves ±1.5°C accuracy over 0–100°C after two-point calibration, as specified in Section 5.3.18 of the datasheet.
Is the STM32F101R6T6 pin-compatible with other STM32F101xx variants in LQFP64?
Yes-within the same density and package, STM32F101R6T6 shares identical pinout with STM32F101R4T6, STM32F101R8T6, and STM32F101RBH6. Differences are limited to Flash size (16 KB vs. 32 KB vs. 64 KB) and SRAM (4 KB vs. 6 KB), with no functional or pinout changes across the R-series LQFP64 variants.
STM32F101R6T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F1
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- 51
- 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 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F101R6T6 FAQ
1.How can I place an order for STM32F101R6T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F101R6T6 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 STM32F101R6T6 reliable?
The price and inventory of STM32F101R6T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F101R6T6 is usually 5 days.
3.What payment methods are accepted for STM32F101R6T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F101R6T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F101R6T6?
STM32F101R6T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F101R6T6 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 STM32F101R6T6?
For technical support, including STM32F101R6T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F101R6T6 requirements.
6.How does Aetrix verify that STM32F101R6T6 is sourced from the original manufacturer or authorized distributors?
All STM32F101R6T6 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 STM32F101R6T6 meets industry standards.
7.What is the process for return or replacement of STM32F101R6T6?
All STM32F101R6T6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F101R6T6, 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 STM32F101R6T6 part is unused and in its original packaging.
Return procedure for STM32F101R6T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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