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STMicroelectronics STM32F101R6T6ATR
- Part No.:
- STM32F101R6T6ATR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F101R6T6ATR.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,952
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Product details
Overview
STM32F101R6T6ATR 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 a temperature sensor and RTC with VBAT backup-used in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the STM32F101R6T6ATR datasheet, STM32F101R6T6ATR pinout, STM32F101R6T6ATR application, or STM32F101R6T6ATR equivalent, key selection criteria include Flash/SRAM size, 48-pin LQFP package compatibility, 36 MHz real-time performance, 51 I/O count with 5 V tolerance, and integrated analog sensing capability for cost-sensitive embedded designs.
Technical Context
The device implements an ARM Cortex-M3 core with Harvard architecture, single-cycle multiplication, and hardware divide, executing from on-chip Flash with zero-wait-state access up to 36 MHz. Its clock system includes dual oscillators (4–16 MHz HSE and 32 kHz LSE), programmable PLL, and factory-trimmed 8 MHz HSI RC source.
Peripherals are managed via a nested vectored interrupt controller (NVIC) supporting 64 interrupts, with DMA channels servicing timers, ADC, USARTs, I²C, and SPI. The 12-bit ADC features 16 external channels, internal temperature sensor input, and 0–3.6 V full-scale range-calibrated at factory and usable without external reference.
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 performance |
| Flash Memory | 32 KB - sufficient for firmware + bootloader in compact industrial controllers |
| SRAM | 6 KB - supports moderate data buffering and stack depth for multitasked RTOS use |
| ADC Resolution | 12-bit, 1 µs conversion - resolves 0.88 mV per LSB over 0–3.6 V range for precision sensor interfacing |
| I/O Count & Tolerance | 51 pins, 5 V-tolerant - simplifies interface to legacy 5 V logic and sensors without level shifters |
| Communication Interfaces | 1×I²C, 2×USART, 1×SPI - covers serial sensor networks, UART debug, and peripheral expansion |
| Low-Power Modes | Sleep/Stop/Standby with VBAT RTC - enables <1 µA standby current for battery life extension |
| Package | LQFP48 (7 × 7 mm) - standard footprint compatible with automated SMT assembly and thermal management |
Pinout & Package
LQFP48 package: 48-pin, 7 × 7 mm body, 0.5 mm pitch, exposed pad optional, RoHS-compliant ECOPACK®.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 2.0–3.6 V supply rails with decoupling support for stable core/peripheral operation |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 51 total GPIOs; most support external interrupts, alternate functions, and 5 V tolerance |
| OSC_IN / OSC_OUT | HSE crystal oscillator input/output | Supports 4–16 MHz quartz crystal for precise system timing and USB-free clocking |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 5 V-tolerant signal for robust system recovery |
| BOOT0 | Boot mode selection | Configures boot from system memory (ISP) or main Flash-critical for field firmware updates |
| VREF+, VREF− | ADC reference inputs | Enable external reference voltage for improved ADC accuracy vs. internal VDD-based reference |
| VBAT | RTC and backup register supply | Accepts 1.8–3.6 V battery input to maintain RTC time and 4 KB backup SRAM during main power loss |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle hardware multiply/divide | Enables fast PID loop execution and fixed-point math without software overhead |
| Temperature sensor + ADC channel | On-die thermal sensing calibrated at factory-eliminates external sensor for ambient monitoring |
| 7-channel DMA controller | Offloads data movement from CPU for concurrent ADC sampling, UART streaming, and SPI transfers |
| Programmable voltage detector (PVD) | Generates interrupt or reset when VDD drops below user-configurable threshold-prevents erratic behavior |
| CRC calculation unit | Hardware-accelerated CRC-32 generation for firmware integrity checks and communication packet validation |
Applications
| Industrial Sensor Node | Smart Home Controller |
|---|---|
Use Scenario: Compact environmental monitor measuring temperature, humidity, and CO₂ using analog and digital sensors. IC Role / Device Role / Timing Role: Main MCU executing sensor fusion, local decision logic, and UART-to-Bluetooth bridge timing. Use Value: Integrated 12-bit ADC and 5 V-tolerant I/O reduce BOM count; 6 KB SRAM accommodates lightweight MQTT stack and sensor buffers. | Use Scenario: Wall-mounted HVAC controller managing fan speed, valve position, and occupancy detection. IC Role / Device Role / Timing Role: Real-time actuator coordinator with PWM outputs, button debouncing, and IR remote decoding timing. Use Value: 36 MHz Cortex-M3 delivers sub-millisecond response to user inputs; Stop-mode current <10 µA extends battery life in wireless variants. |
| Medical Diagnostic Tool | Energy Meter Interface Module |
Use Scenario: Portable pulse oximeter with LED drivers, photodiode amplifier, and OLED display interface. IC Role / Device Role / Timing Role: Analog front-end controller synchronizing LED pulsing, ADC sampling, and SPI-driven display refresh. Use Value: Factory-calibrated temperature sensor validates thermal drift compensation; 1 µs ADC enables high-sample-rate photoplethysmography. | Use Scenario: DIN-rail mounted module reading kWh via shunt-based current sensing and RS-485 backhaul. IC Role / Device Role / Timing Role: Isolated metering co-processor handling ADC oversampling, RMS calculation, and Modbus RTU framing. Use Value: Dual USARTs support simultaneous local debug (UART) and isolated RS-485 (with transceiver); CRC unit ensures data integrity over noisy lines. |
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, no VBAT RTC, no temperature sensor | Lacks backup-registers and RTC calibration; lower interrupt latency but no analog sensing integration | Choose for cost-sensitive, non-battery-backed applications requiring higher clock speed but simpler analog needs |
| STM32F103C8T6 | 64 KB Flash, 20 KB SRAM, USB 2.0 FS, same LQFP48 package, identical peripheral set | Higher memory headroom and USB connectivity-adds BOM cost and layout complexity | Choose when firmware growth or host-side USB programming/debug is required; otherwise over-spec'd |
Compared with STM32F101R6T6ATR, the STM32F030F4P6 trades analog integration for lower cost and higher base clock, while the STM32F103C8T6 adds USB and memory headroom at increased price and power-making the R6T6ATR optimal for fixed-function, battery-aware sensor edge nodes.
Availability
STM32F101R6T6ATR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, portable medical tools, and energy meter interface modules requiring stable component supply across multi-year production cycles.
Supply support for STM32F101R6T6ATR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32F101x6 series targets cost-optimized, low-power embedded control-emphasizing analog integration, small-footprint packaging, and long-term supply stability for volume industrial applications.
FAQ
What is the maximum operating frequency and corresponding power supply range?
The STM32F101R6T6ATR achieves 36 MHz maximum CPU frequency with zero wait states when powered from 2.0–3.6 V. At 3.6 V, it delivers 1.25 DMIPS/MHz performance. Below 2.0 V, operation is not guaranteed; above 3.6 V risks permanent damage per absolute maximum ratings.
Does this MCU support hardware debugging, and which interfaces are available?
Yes-it supports Serial Wire Debug (SWD) and JTAG via dedicated SWDIO, SWCLK, and JTCK/JTDI/JTDO pins. SWD is recommended for minimal pin count (2-wire), while JTAG provides full boundary-scan capability. Both are active in Run, Sleep, and Stop modes with no additional configuration required.
Can the internal temperature sensor be used without external calibration?
Yes-the factory-calibrated temperature sensor provides ±1.5°C accuracy from −40°C to 85°C without user calibration. It connects to ADC channel 16 and uses the internal 1.22 V reference; raw ADC values convert directly to temperature using the formula provided in Section 2.3.24 of the datasheet.
Is the LQFP48 package of STM32F101R6T6ATR pin-compatible with other STM32F101xx variants?
Yes-within the STM32F101x4/x6 family, all LQFP48-packaged variants (e.g., STM32F101C6, STM32F101R6, STM32F101T6) share identical pinouts and electrical characteristics. Differences are limited to Flash (16 KB vs. 32 KB) and SRAM (4 KB vs. 6 KB) sizes-enabling drop-in replacement during design iteration.
STM32F101R6T6ATR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F1
- Packaging:
- Tape & Reel (TR)
- 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:
- 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:
STM32F101R6T6ATR FAQ
1.How can I place an order for STM32F101R6T6ATR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F101R6T6ATR 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 STM32F101R6T6ATR reliable?
The price and inventory of STM32F101R6T6ATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F101R6T6ATR is usually 5 days.
3.What payment methods are accepted for STM32F101R6T6ATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F101R6T6ATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F101R6T6ATR?
STM32F101R6T6ATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F101R6T6ATR 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 STM32F101R6T6ATR?
For technical support, including STM32F101R6T6ATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F101R6T6ATR requirements.
6.How does Aetrix verify that STM32F101R6T6ATR is sourced from the original manufacturer or authorized distributors?
All STM32F101R6T6ATR 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 STM32F101R6T6ATR meets industry standards.
7.What is the process for return or replacement of STM32F101R6T6ATR?
All STM32F101R6T6ATR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F101R6T6ATR, 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 STM32F101R6T6ATR part is unused and in its original packaging.
Return procedure for STM32F101R6T6ATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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