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STMicroelectronics STM32F101RET6TR
- Part No.:
- STM32F101RET6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F101RET6TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,758
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Product details
Overview
STM32F101RET6TR from STMicroelectronics is a high-density ARM® Cortex®-M3 32-bit microcontroller with 512 KB Flash, 48 KB SRAM, and operating frequency up to 36 MHz. It integrates one 12-bit ADC (1 µs conversion), two 12-bit DACs, nine timers (including watchdogs and SysTick), and ten communication interfaces including 2×I²C, 3×SPI, and 5×USART. It targets industrial control panels requiring deterministic real-time response and integrated analog I/O.
For engineers reviewing the STM32F101RET6TR datasheet, STM32F101RET6TR pinout, STM32F101RET6TR application, or STM32F101RET6TR equivalent, key selection criteria include Flash/SRAM capacity, 36 MHz CPU clock tolerance, 112 I/O count with 5 V-tolerance, RTC + temperature sensor integration, and LQFP64 package compatibility for space-constrained HMI designs.
Technical Context
The device implements a single-core ARM Cortex-M3 with Harvard architecture, supporting Thumb-2 instruction set and hardware division. Its memory subsystem includes 512 KB on-chip Flash with error correction, 48 KB SRAM, and FSMC supporting NOR/PSRAM/CompactFlash with configurable wait states.
Clock management features dual oscillators (4–16 MHz HSE and 32 kHz LSE), factory-trimmed 8 MHz HSI, and PLL with programmable multiplication factor. Power control supports Sleep, Stop, and Standby modes with VBAT-backed RTC and backup registers - enabling low-power sensor node operation down to 2 µA in Standby with RTC active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 36 MHz max - enables deterministic real-time task scheduling at ≤27.8 ns instruction cycle time |
| Flash Memory | 512 KB - sufficient for complex firmware with bootloader, OTA update partition, and safety checksum storage |
| SRAM | 48 KB - supports multiple concurrent buffers for communication stacks (e.g., Modbus RTU + CAN FD) and sensor fusion |
| ADC | 1 × 12-bit, 1 µs conversion, 16-channel - meets <100 µs sampling requirement for motor current sensing loops |
| DAC | 2 × 12-bit - provides independent analog outputs for reference voltage generation or actuator control signals |
| I/O Count | 51 I/O pins in LQFP64 package - all 5 V-tolerant, enabling direct interface with legacy 5 V logic without level shifters |
| Timers | 9 timers: 4×16-bit general-purpose, 2×watchdog, 1×SysTick, 2×basic - supports PWM generation, quadrature decoding, and precise time-stamping |
| Communication | 5×USART, 2×I²C, 3×SPI - allows simultaneous RS-485 fieldbus, I²C sensor hub, and SPI flash logging |
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 2.0–3.6 V supply rails with dedicated analog/digital separation; decoupling required per datasheet layout guidelines |
| PA0–PA15, PB0–PB15, PC13–PC15 | General-purpose I/O | 51 total GPIOs; all support external interrupt, most are 5 V-tolerant - simplifies mixed-voltage system interfacing |
| OSC_IN / OSC_OUT | External crystal oscillator input/output | Supports 4–16 MHz quartz; enables precise timing for UART baud rate generation and RTC calibration |
| NRST | Active-low reset | Asynchronous reset with internal pull-up; compatible with open-drain reset supervisors and manual push-button circuits |
| BOOT0 | Boot mode selection | High at power-on selects system memory boot (for ISP via USART); enables field firmware recovery without debugger |
Key Features
| Feature | Design Value |
|---|---|
| Flexible Static Memory Controller (FSMC) | Supports NOR/PSRAM/CompactFlash with 4 chip selects - enables direct connection to external display controllers or data loggers |
| Temperature Sensor | Integrated calibrated sensor with ±1.5°C accuracy - eliminates need for external thermal monitoring IC in enclosure temperature-aware designs |
| DMA Controller | 12-channel, peripheral-to-memory and memory-to-peripheral - offloads CPU during ADC sampling, SPI transfers, and USART buffering |
| Serial Wire Debug (SWD) | 2-pin debug interface with full trace capability - reduces PCB footprint vs JTAG while retaining real-time variable inspection and breakpoint control |
| CRC Calculation Unit | Hardware-accelerated CRC-32 - ensures fast integrity checking of firmware images and configuration data in safety-critical updates |
Applications
| Industrial HMI Panel | Smart Energy Meter |
|---|---|
Use Scenario: Local operator interface with LCD, keypad, and serial fieldbus connectivity. IC Role / Device Role / Timing Role: Main controller executing GUI rendering, button debouncing, and Modbus RTU slave protocol stack. Use Value: 512 KB Flash stores bitmap assets and localized language strings; 51 GPIOs drive 4×4 keypad matrix and parallel LCD interface directly. | Use Scenario: DIN-rail mounted meter with voltage/current sensing, EEPROM logging, and RS-485 communication. IC Role / Device Role / Timing Role: System-on-chip managing ADC sampling, energy calculation, tamper detection, and secure firmware updates. Use Value: Integrated 12-bit ADC achieves Class 0.5 accuracy per IEC 62053; RTC + VBAT enables timestamped event logging during mains outage. |
| Programmable Logic Controller (PLC) I/O Module | Medical Diagnostic Sensor Hub |
Use Scenario: Compact remote I/O expansion unit with digital inputs, relay outputs, and CAN bus backbone. IC Role / Device Role / Timing Role: Real-time I/O processor handling discrete signal conditioning, pulse counting, and CANopen NMT state machine. Use Value: 9 timers provide independent 1 ms system tick, 100 µs PWM for solid-state relays, and quadrature decoding for encoder feedback. | Use Scenario: Portable diagnostic device aggregating ECG, temperature, and SpO₂ sensor data before Bluetooth transmission. IC Role / Device Role / Timing Role: Analog front-end controller performing synchronized multi-channel sampling and baseline drift compensation. Use Value: Two 12-bit DACs generate precision reference voltages for transimpedance amplifiers; temperature sensor calibrates gain drift across operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F103RET6 | 64 KB SRAM (vs 48 KB), no FSMC, same Flash and peripherals | Better suited for USB host/device stacks requiring larger RAM buffer | Select when USB connectivity or larger heap allocation is required; not drop-in due to missing FSMC pins |
| STM32F072RBT6 | Cortex-M0 core, 48 MHz, 128 KB Flash, 16 KB SRAM, no FSMC or DAC | Lower cost for simpler control tasks without analog output or external memory needs | Choose for cost-sensitive applications where 36 MHz M3 performance and dual DAC are unnecessary |
Compared with STM32F103RET6, the STM32F101RET6TR trades RAM headroom for FSMC and dual DAC - making it superior for display-driven HMIs or analog-output PLC modules. Against STM32F072RBT6, it delivers higher determinism and richer analog integration at moderate BOM cost increase.
Availability
STM32F101RET6TR is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, PLC I/O modules, and medical sensor hubs requiring stable component supply over extended production lifecycles.
Supply support for STM32F101RET6TR 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 devices, sensors, and automotive ICs since 1987.
The STM32F101 line targets cost-optimized, high-integration embedded control applications - emphasizing analog capability, real-time responsiveness, and industrial-grade reliability in compact packages.
FAQ
What is the maximum operating frequency and associated power consumption?
The STM32F101RET6TR operates up to 36 MHz with typical active current of 24 mA at 3.6 V and 36 MHz (code from Flash, peripherals enabled). At 8 MHz, consumption drops to ~9 mA. These values are measured under defined conditions in Section 5.3.5 of the datasheet and scale linearly with supply voltage and active peripheral count.
Does this MCU support hardware encryption or secure boot?
No. The STM32F101RET6TR does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security measures. For secure firmware validation, external secure elements or newer STM32G0/G4/L5 series with TRNG and AES engines are recommended.
Can the internal temperature sensor be used for ambient temperature measurement?
Yes - the integrated temperature sensor has ±1.5°C accuracy after calibration using the 16-bit calibration value stored in system memory. It measures die temperature, which correlates closely with ambient in thermally coupled enclosures; PCB layout must avoid local heating sources for best accuracy.
What debug interfaces are supported and what pins do they require?
It supports Serial Wire Debug (SWD) using SWCLK and SWDIO pins (PA14/PA13), requiring only two pins and no reset line for basic debugging. JTAG is also available on four pins (JTCK/JTMS/JTDI/JTDO) but consumes more I/O. Both interfaces support full breakpoint, watchpoint, and memory inspection capabilities via standard ARM CoreSight infrastructure.
STM32F101RET6TR 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:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 48K x 8
- Voltage - Supply (Vcc/Vdd):
- 2V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F101RET6TR FAQ
1.How can I place an order for STM32F101RET6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F101RET6TR 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 STM32F101RET6TR reliable?
The price and inventory of STM32F101RET6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F101RET6TR is usually 5 days.
3.What payment methods are accepted for STM32F101RET6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F101RET6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F101RET6TR?
STM32F101RET6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F101RET6TR 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 STM32F101RET6TR?
For technical support, including STM32F101RET6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F101RET6TR requirements.
6.How does Aetrix verify that STM32F101RET6TR is sourced from the original manufacturer or authorized distributors?
All STM32F101RET6TR 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 STM32F101RET6TR meets industry standards.
7.What is the process for return or replacement of STM32F101RET6TR?
All STM32F101RET6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F101RET6TR, 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 STM32F101RET6TR part is unused and in its original packaging.
Return procedure for STM32F101RET6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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