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STMicroelectronics STM8L101F2U6ATR
- Part No.:
- STM8L101F2U6ATR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-UFQFN
- Datasheet:
-
STM8L101F2U6ATR.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
STM8L101F2U6ATR 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 - designed for battery-powered sensor nodes and portable medical devices operating from 1.65 V to 3.6 V.
For engineers reviewing the STM8L101F2U6ATR datasheet, STM8L101F2U6ATR pinout, STM8L101F2U6ATR application, or STM8L101F2U6ATR equivalent, key selection criteria include ultra-low active-halt current (0.8 µA), 20-pin UFQFPN package footprint, SWIM debug interface support, and IR remote control capability in compact embedded systems.
Technical Context
The STM8L101F2U6ATR implements a CISC-based STM8 core delivering up to 16 MIPS at 16 MHz, with dual internal RC oscillators: a 16 MHz HSI for main system clock and a 38 kHz LSI for independent watchdog and auto-wakeup unit timing. Its nested interrupt controller supports 29 external sources with software-configurable priority.
Memory architecture includes ECC-protected Flash with in-application programming, 2 Kbytes of emulated data EEPROM, and flexible read/write protection. Low-power operation is enabled by three distinct modes - Wait, Active-halt, and Halt - with fast wakeup (<4 µs from Halt using HSI).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | STM8 8-bit CISC CPU, 16 MIPS @ 16 MHz - enables deterministic real-time control in resource-constrained designs. |
| Flash Memory | 4 Kbytes with ECC and in-application programming - supports firmware updates without external programmer. |
| RAM Size | 1.5 Kbytes static RAM - sufficient for sensor data buffering 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. |
| Low-Power Current | Halt mode: 0.3 µA, Active-halt: 0.8 µA - extends battery life to multi-year operation in wake-on-event applications. |
| Peripherals | USART (fractional baud rate), SPI, I²C (400 kHz multimaster), 2×16-bit timers, IR interface, 2×comparators - integrates essential communication and signal conditioning for edge sensing. |
| Operating Temp | -40 °C to +85 °C - qualified for industrial and consumer-grade portable equipment environments. |
Pinout & Package
STM8L101F2U6ATR uses a 20-pin Ultra Thin Fine Pitch Quad Flat No-lead (UFQFPN) package, 3 × 3 mm, 0.5 mm pitch, with exposed thermal pad. Pin mapping follows standard STM8L101FxU6A configuration per Figure 3 of DocID15275 Rev 16.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 1.65–3.6 V supply rail; decoupling required within 1 cm for stable low-power operation. |
| VSS | Ground reference | Digital ground plane connection; tied to thermal pad for optimal thermal performance. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts external push-button or supervisor IC assertion. |
| SWIM | Single-wire debug interface | Enables non-intrusive programming and real-time debugging via dedicated pin (no UART/SWD overhead). |
| PA0 | GPIO / LED driver output | High-sink capability (up to 20 mA) supports direct infrared LED drive for remote control applications. |
| PA1–PA7 | General-purpose I/O | All mappable to external interrupts; configurable pull-ups, open-drain, and analog input options. |
| PB0–PB5 | General-purpose I/O | Support alternate functions: USART TX/RX, SPI SCK/MOSI/MISO, I²C SCL/SDA, timer channels. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power Halt mode | 0.3 µA typical - enables years of operation on coin-cell batteries in periodic-sensing applications. |
| Integrated IR transmitter interface | Dedicated hardware modulation at 38 kHz - eliminates need for external timer+transistor circuitry in remote control endpoints. |
| SWIM debug interface | Single-pin, high-speed on-chip programming - reduces PCB footprint and simplifies production programming vs. JTAG/SWD. |
| Emulated data EEPROM | 2 Kbytes with wear leveling - stores calibration data, device IDs, or user settings without external memory. |
| Flexible clock system | 16 MHz HSI + 38 kHz LSI - allows simultaneous high-speed processing and ultra-low-power background timing (AWU/IWDG). |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRa module. IC Role / Device Role / Timing Role: Main system controller managing sensor reads, data formatting, low-power scheduling, and IR wake-up coordination. Use Value: 0.8 µA Active-halt current extends 200 mAh CR2032 battery life beyond 3 years with 1-minute wake intervals. |
Use Scenario: Wearable pulse oximeter with LED drivers and analog front-end signal conditioning. IC Role / Device Role / Timing Role: Signal acquisition controller interfacing ADC inputs, driving IR/Red LEDs, and managing display via SPI. Use Value: PA0's 20 mA high-sink LED driver eliminates external transistor, reducing BOM count and board area. |
| Smart Home Remote Control | Industrial Status Indicator |
Use Scenario: IR remote for HVAC or lighting control with button matrix scanning and NEC protocol encoding. IC Role / Device Role / Timing Role: Dedicated IR protocol generator with built-in 38 kHz carrier and modulated output on PA0. Use Value: Hardware IR modulation reduces CPU load to <5% during transmission, preserving battery and enabling concurrent tasks. |
Use Scenario: DIN-rail mounted status panel with LED indicators, pushbutton inputs, and RS-485 communication. IC Role / Device Role / Timing Role: Local intelligence hub handling I/O monitoring, fault logging to EEPROM, and UART-to-RS485 bridge. Use Value: ECC-protected Flash ensures firmware integrity across 10+ year deployments in unattended industrial cabinets. |
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 - no IR peripheral, higher active current (200 µA/MHz). | Lacks hardware IR modulation; requires external components for remote control functionality. | Select when larger Flash and TSSOP assembly preference outweigh IR integration needs. |
| EFM8LB12F32ES1-B-QFN24 | Silicon Labs 8051 core, 32 Kbytes Flash, 2.25 Kbytes RAM, QFN24 - 1.8–3.6 V supply, 0.5 µA deep-sleep. | Higher code density and richer analog peripherals (12-bit ADC, op-amps), but no native IR block or SWIM interface. | Prefer for mixed-signal applications requiring precision sensing, where IR is implemented in firmware or omitted. |
Compared with STM8L101F2U6ATR, STM8L051F3P6 offers more Flash but lacks IR hardware acceleration, while EFM8LB12F32ES1-B-QFN24 provides deeper sleep and analog integration at the cost of ecosystem compatibility and SWIM simplicity.
Availability
STM8L101F2U6ATR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smart home remotes, and industrial status indicators requiring stable component supply across long-lifecycle programs.
Supply support for STM8L101F2U6ATR 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 semiconductors since 1987.
The STM8L series targets ultra-low-power embedded applications, emphasizing energy efficiency, compact packaging, and integrated peripherals for battery-operated IoT endpoints and portable electronics.
FAQ
What is the maximum operating frequency of the STM8L101F2U6ATR?
The STM8L101F2U6ATR operates at up to 16 MHz using its internal 16 MHz high-speed RC oscillator (HSI), which achieves typical accuracy of ±1% over voltage and temperature ranges - sufficient for precise UART baud rate generation and real-time control loops without external crystal.
Does the STM8L101F2U6ATR support in-circuit programming after soldering?
Yes - it supports in-circuit programming via the Single Wire Interface Module (SWIM) using only one dedicated pin (SWIM), enabling field firmware updates and production-line flashing without removing the MCU from the PCB or requiring additional debug headers.
Can the STM8L101F2U6ATR drive an infrared LED directly?
Yes - PA0 is configured as a high-sink LED driver capable of sourcing up to 20 mA, allowing direct connection of standard 38 kHz IR LEDs without external transistors or current-limiting resistors beyond the series LED resistor.
Is there hardware error correction for Flash memory on this device?
Yes - the 4 Kbytes Flash includes built-in Error Correction Code (ECC) logic that detects and corrects single-bit errors during read operations, ensuring firmware reliability over extended temperature and voltage stress conditions typical in industrial deployments.
STM8L101F2U6ATR 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:
STM8L101F2U6ATR FAQ
1.How can I place an order for STM8L101F2U6ATR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L101F2U6ATR 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 STM8L101F2U6ATR reliable?
The price and inventory of STM8L101F2U6ATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L101F2U6ATR is usually 5 days.
3.What payment methods are accepted for STM8L101F2U6ATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L101F2U6ATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L101F2U6ATR?
STM8L101F2U6ATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L101F2U6ATR 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 STM8L101F2U6ATR?
For technical support, including STM8L101F2U6ATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L101F2U6ATR requirements.
6.How does Aetrix verify that STM8L101F2U6ATR is sourced from the original manufacturer or authorized distributors?
All STM8L101F2U6ATR 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 STM8L101F2U6ATR meets industry standards.
7.What is the process for return or replacement of STM8L101F2U6ATR?
All STM8L101F2U6ATR units undergo pre-shipment inspection (PSI). If there is an issue with STM8L101F2U6ATR, 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 STM8L101F2U6ATR part is unused and in its original packaging.
Return procedure for STM8L101F2U6ATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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