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STMicroelectronics STM8L101F2U6TR
- Part No.:
- STM8L101F2U6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-UFQFN
- Datasheet:
-
STM8L101F2U6TR.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
STM8L101F2U6TR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 4 Kbytes Flash, 1.5 Kbytes RAM, and integrated peripherals including two 16-bit timers, USART, SPI, I²C, two comparators, and infrared (IR) interface - deployed in battery-powered sensor nodes and portable medical devices operating from 1.65 V to 3.6 V.
For engineers reviewing the STM8L101F2U6TR datasheet, STM8L101F2U6TR pinout, STM8L101F2U6TR application, or STM8L101F2U6TR equivalent, key selection criteria include active-halt current (0.8 µA), 20-pin UFQFPN package footprint, SWIM debug interface support, and IR transmitter capability with programmable beeper output.
Technical Context
The STM8L101F2U6TR implements a CISC-based STM8 core delivering up to 16 MIPS at 16 MHz, with dual internal RC oscillators: a 16 MHz HSI for dynamic run mode and a 38 kHz LSI for independent watchdog and auto-wakeup unit (AWU) operation. Its interrupt controller supports nested priority handling across 29 external sources.
Memory architecture includes ECC-protected Flash with in-application programming, 2 Kbytes of emulated data EEPROM, and flexible read/write protection. Low-power modes-Wait, Active-halt, and Halt-are managed via dedicated voltage regulators and POR/PDR circuitry optimized for sub-1 µA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit CISC CPU, 16 MIPS @ 16 MHz - enables deterministic real-time control without complex toolchain overhead. |
| Flash Memory | 4 Kbytes with ECC and in-application programming - supports field firmware updates and robust code integrity in harsh environments. |
| RAM Size | 1.5 Kbytes static RAM - sufficient for sensor fusion buffers and lightweight protocol stacks (e.g., BLE over UART). |
| Supply Voltage | 1.65 V to 3.6 V - compatible with single-cell Li-ion, LiFePO₄, and alkaline battery systems without external regulation. |
| Low-Power Current | Halt mode: 0.3 µA, Active-halt: 0.8 µA - extends shelf life and operational runtime in always-on wake-on-event applications. |
| Peripherals | USART (fractional baud), SPI, I²C (400 kHz), 2× 16-bit timers, IR interface, beeper timer - integrates communication, timing, and actuation in compact BMS or wearable designs. |
| Operating Temp | -40 °C to +85 °C - qualified for industrial and consumer-grade ambient conditions without derating. |
| Debug Interface | Single-Wire Interface Module (SWIM) - enables non-intrusive debugging and flash programming using minimal PCB routing (1 signal + GND). |
Pinout & Package
STM8L101F2U6TR is housed in a 20-pin Ultra Thin Fine Pitch Quad Flat No-lead (UFQFPN) package, 3 × 3 mm body size, 0.5 mm pitch, with exposed thermal pad. Pin count and I/O mapping align with the STM8L101x2 family variant for compact layout and thermal efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 1.65–3.6 V supply rail; decoupling required within 1 cm of pin for low-noise operation. |
| VSS | Ground reference | Digital ground return; tied to thermal pad for improved thermal dissipation and EMI suppression. |
| NRST | Active-low reset input | Asynchronous reset trigger; internal pull-up enables standalone operation without external RC network. |
| SWIM | Single-wire debug interface | Enables full programming and real-time debugging via one bidirectional pin - eliminates need for JTAG header space. |
| PA0 | High-sink LED/IR driver | Capable of 20 mA sink current; directly drives IR LEDs or indicator LEDs without external transistor. |
| PA1–PA7 | General-purpose I/O | All mappable to external interrupts; configurable pull-ups, open-drain, and high-drive modes for mixed-signal interfacing. |
| PA10/PA11 | USART TX/RX | Full-duplex asynchronous serial interface supporting fractional baud generation for precise timing across voltage/temp ranges. |
| PA12/PA13 | SPI SCK/MOSI | Master or slave SPI interface; supports up to 8 MHz clock rate with hardware NSS management. |
| PA14/PA15 | I²C SCL/SDA | Multi-master I²C compliant at 400 kHz; includes slew-rate control and noise filtering for noisy industrial buses. |
| PC0–PC3 | Comparator inputs / IR modulation | Four comparator inputs shared with IR carrier generator - enables analog threshold detection and remote control encoding. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Halt mode | 0.3 µA typical - enables multi-year battery life in periodic wake-up sensor applications (e.g., environmental monitors). |
| Integrated IR transmitter | Hardware-modulated 30–56 kHz carrier with programmable duty cycle - eliminates external encoder IC for remote control endpoints. |
| Beeper timer | 1/2/4 kHz fixed-frequency output on PA0 - provides audible feedback without software timing loops or external components. |
| Error Correction Code (ECC) | On-chip Flash ECC detection and correction - prevents silent corruption in long-life deployments (e.g., smart metering, asset trackers). |
| SWIM debug interface | Single-pin, non-intrusive on-chip debugging - reduces test point count and simplifies production programming fixtures. |
| Programmable I/O pull-ups | Internal 20–50 kΩ pull-up resistors - eliminates external biasing components for button interfaces and bus terminations. |
Applications
| Wireless Sensor Node | Portable Medical Device |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRaWAN gateway. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, data formatting, and low-duty-cycle radio wake-up sequencing. Use Value: 0.8 µA Active-halt current enables 10+ year coin-cell operation when paired with event-driven sleep/wake cycles. | Use Scenario: Handheld pulse oximeter with LED drivers, analog front-end, and USB/UART diagnostics port. IC Role / Device Role / Timing Role: Central signal conditioner and display coordinator, synchronizing red/IR LED timing and ADC conversion windows. Use Value: PA0's 20 mA high-sink capability directly drives LEDs; built-in beeper timer provides audible saturation alerts without added BOM cost. |
| Smart Home Remote Control | Industrial Status Indicator |
Use Scenario: IR remote for HVAC or lighting with user button matrix and battery voltage monitoring. IC Role / Device Role / Timing Role: IR protocol encoder and key scan manager with wake-on-keypress and low-power standby. Use Value: Hardware IR modulation engine offloads CPU; 38 kHz LSI oscillator ensures stable carrier frequency across temperature and voltage. | Use Scenario: DIN-rail mounted equipment status panel with multi-color LED indicators and fault logging. IC Role / Device Role / Timing Role: Standalone status interpreter receiving Modbus RTU commands and driving visual/audible alarms. Use Value: Integrated comparators monitor supply rails and sensor thresholds; SWIM allows field firmware updates without disassembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM8L051F3P6 | Same STM8L core, 8 Kbytes Flash, 1 Kbyte RAM, TSSOP20 package - lacks IR interface and beeper timer. | Suitable for general-purpose sensing where IR transmission is unnecessary; higher Flash supports larger protocol stacks. | Select when firmware complexity exceeds 4 Kbytes or when TSSOP assembly preference exists. |
| EFM8LB12F32ES1-QFP32 | Silicon Labs 8051 core, 32 Kbytes Flash, 2.25 Kbytes RAM, QFP32 - adds capacitive touch and USB, but consumes 1.2 µA in deep sleep. | Better suited for human-interface-rich devices (touch buttons, USB-CDC) requiring more memory and peripheral headroom. | Choose when migrating from legacy 8051 ecosystems or adding USB connectivity without external transceivers. |
Compared with STM8L101F2U6TR, STM8L051F3P6 offers greater Flash capacity at the cost of IR functionality, while EFM8LB12F32ES1-QFP32 delivers expanded peripherals and deeper integration at higher power and package size - making STM8L101F2U6TR optimal for cost-sensitive, IR-centric, sub-1 µA standby applications.
Availability
STM8L101F2U6TR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical devices, smart home remotes, and industrial status indicators requiring stable component supply across extended product lifecycles.
Supply support for STM8L101F2U6TR 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-grade components since 1987.
The STM8L series targets ultra-low-power embedded applications - specifically optimized for battery-operated equipment where energy efficiency, small footprint, and rapid time-to-market outweigh raw performance demands.
FAQ
What is the maximum operating frequency of the STM8L101F2U6TR?
The STM8L101F2U6TR operates at up to 16 MHz using its internal 16 MHz high-speed RC oscillator (HSI), which achieves typical startup time of 4 µs. External crystal support is not provided; all timing-critical functions rely on calibrated internal oscillators with ±1% accuracy over voltage and temperature.
Does the STM8L101F2U6TR support in-system programming (ISP)?
Yes - the device supports in-system programming via the Single-Wire Interface Module (SWIM) using standard ST-LINK/V2 or compatible debuggers. No bootloader is required; flash memory can be reprogrammed while soldered on the target board, enabling field firmware updates and production line programming.
Can the comparators drive the IR modulator directly?
Yes - the two comparators share input channels with the IR interface block. Comparator outputs feed into the IR carrier generator, allowing hardware-based modulation of external IR LEDs using analog threshold detection - eliminating CPU intervention during transmission bursts.
Is the 20-pin UFQFPN package RoHS and REACH compliant?
Yes - STM8L101F2U6TR is manufactured in STMicroelectronics' certified facilities and complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full material declarations and compliance documentation are available through ST's official product page and Aetrix Electronics' quality portal.
STM8L101F2U6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-UFQFN
- Series:
- STM8L EnergyLite
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- STM8
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Infrared, POR, PWM, WDT
- Number of I/O:
- 18
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8L101F2U6TR FAQ
1.How can I place an order for STM8L101F2U6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L101F2U6TR 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 STM8L101F2U6TR reliable?
The price and inventory of STM8L101F2U6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L101F2U6TR is usually 5 days.
3.What payment methods are accepted for STM8L101F2U6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L101F2U6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L101F2U6TR?
STM8L101F2U6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L101F2U6TR 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 STM8L101F2U6TR?
For technical support, including STM8L101F2U6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L101F2U6TR requirements.
6.How does Aetrix verify that STM8L101F2U6TR is sourced from the original manufacturer or authorized distributors?
All STM8L101F2U6TR 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 STM8L101F2U6TR meets industry standards.
7.What is the process for return or replacement of STM8L101F2U6TR?
All STM8L101F2U6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM8L101F2U6TR, 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 STM8L101F2U6TR part is unused and in its original packaging.
Return procedure for STM8L101F2U6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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