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STMicroelectronics STM8L101F3TDRTR
- Part No.:
- STM8L101F3TDRTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-LQFP
- Datasheet:
-
STM8L101F3TDRTR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 20LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,344
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Product details
Overview
STM8L101F3TDRTR from STMicroelectronics is an 8-bit ultra-low-power microcontroller featuring 8 Kbytes Flash, 1.5 Kbytes SRAM, and integrated peripherals including two 16-bit timers, USART, SPI, I²C, two comparators, and infrared (IR) interface - designed for battery-powered sensor nodes and energy-harvesting systems operating at 1.65–3.6 V supply.
For engineers reviewing the STM8L101F3TDRTR datasheet, STM8L101F3TDRTR pinout, STM8L101F3TDRTR application, or STM8L101F3TDRTR equivalent, key selection criteria include ultra-low active/halt current (150 µA/MHz / 0.3 µA), 30 GPIOs with LED driver capability on PA0, SWIM debug interface, and support for -40 to 85 °C industrial temperature range.
Technical Context
The STM8L101F3TDRTR implements a CISC-based STM8 core delivering up to 16 MIPS at 16 MHz, with dual internal RC oscillators: 16 MHz HSI (typ. ±1% accuracy at 3 V, 25 °C) and 38 kHz LSI for IWDG/AWU. It supports nested interrupts with software priority control across up to 29 external sources.
Memory architecture includes ECC-protected Flash with in-application programming, 2 Kbytes of data EEPROM, and 1.5 Kbytes of static RAM. Clock management integrates prescalers, switchable system clocks, and automatic low-power mode entry via AWU or comparator events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | STM8 8-bit CISC CPU, 16 MIPS @ 16 MHz - enables real-time control without external clock source |
| Flash / EEPROM | 8 Kbytes Flash + 2 Kbytes data EEPROM with ECC - supports firmware updates and nonvolatile parameter storage |
| RAM | 1.5 Kbytes static RAM - sufficient for sensor fusion buffers and stack in ultra-low-power modes |
| Supply Voltage | 1.65 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and alkaline battery systems |
| Low-Power Consumption | Halt: 0.3 µA, Active-halt: 0.8 µA, Run: 150 µA/MHz - extends multi-year operation in coin-cell applications |
| Temperature Range | -40 to +85 °C - qualified for industrial and outdoor environmental monitoring deployments |
| Peripherals | USART (fractional baud), SPI, I²C (400 kHz), 2×16-bit TIM, TIM4, IR, 2×comparator, beeper - full communication & timing suite for compact embedded nodes |
Pinout & Package
STM8L101F3TDRTR is housed in a 20-pin UFQFPN package (3 × 3 mm, 0.5 mm pitch), optimized for space-constrained PCB layouts in portable and wearable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 1.65–3.6 V supply rail; decoupling required per datasheet layout guidelines |
| VSS | Ground | Digital ground reference; separate analog ground not required (single-supply design) |
| NRST | Reset input | Active-low reset with internal pull-up; supports external reset button or supervisor IC |
| SWIM | Single-wire debug interface | Enables non-intrusive programming and debugging using ST-LINK/V2 or equivalent |
| PA0 | GPIO / LED driver / IR output | High-sink capable (max 20 mA) for direct LED/IR emitter drive without external transistor |
| PA1–PA7 | General-purpose I/O | All mappable to external interrupt vectors; programmable pull-ups; tolerate 5 V inputs |
| PB0–PB7 | General-purpose I/O | Support alternate functions: USART TX/RX, SPI SCK/MOSI/MISO, I²C SCL/SDA |
| PC0–PC3 | General-purpose I/O | Include comparator inputs (COMP1/2) and beeper output; support wake-up from low-power modes |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Halt mode | 0.3 µA typical - enables years of shelf life in sealed sensor tags with periodic wake-up |
| Integrated IR transmitter | Dedicated hardware modulation at 38 kHz - eliminates external oscillator and logic for remote control subsystems |
| Data EEPROM | 2 Kbytes with wear-leveling support - stores calibration data, device ID, or user settings without external memory |
| SWIM debug interface | Single-pin, non-intrusive on-chip debugging - reduces test point count and simplifies production programming |
| Comparator with wake-up | 2 independent comparators, each with 4 selectable inputs - triggers exit from Halt/Wait on analog threshold crossing |
Applications
| Wireless Sensor Node | Smart Metering Endpoint |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity node transmitting data via sub-GHz RF or BLE gateway. IC Role / Device Role: Primary controller managing sensor acquisition, low-power scheduling, and serial interface to transceiver. Use Value: 0.3 µA Halt current and AWU-driven wake-up enable >10-year battery life on CR2032. |
Use Scenario: Gas/water meter with pulse counting, tamper detection, and optical/RF communication. IC Role / Device Role: System-on-chip handling metrology interface, LCD drive, and secure data logging. Use Value: Integrated comparators detect mechanical tampering; EEPROM stores lifetime consumption records. |
| IR Remote Control Transmitter | Industrial Status Indicator |
|
Use Scenario: Compact HVAC or AV remote with custom button mapping and protocol encoding. IC Role / Device Role: Standalone IR signal generator using hardware-modulated PA0 output. Use Value: Eliminates external 38 kHz oscillator and gate logic - reduces BOM cost and PCB area by 30%. |
Use Scenario: DIN-rail mounted PLC module requiring visual status feedback via multi-color LEDs. IC Role / Device Role: Auxiliary controller driving high-current LEDs with PWM dimming and fault indication. Use Value: PA0's 20 mA sink capability drives LEDs directly - avoids discrete driver ICs and associated passives. |
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, identical 8 KB Flash/1.5 KB RAM, but adds 12-bit ADC and 10-bit DAC; 20-pin TSSOP only | Better suited for analog sensing (e.g., voltage/current monitoring) where ADC/DAC are required | Select when analog front-end integration outweighs need for IR/LED driver; no SWIM pin conflict in TSSOP |
| EFM8LB12F32ES1-C-QFN24 | Silicon Labs 8051 core, 32 KB Flash, 2.25 KB RAM, 12-bit ADC, lower Halt current (50 nA), QFN24 package | Superior analog integration and deeper sleep, but lacks dedicated IR hardware and SWIM simplicity | Prefer for mixed-signal designs needing precision ADC and nanowatt sleep; requires different toolchain and debug setup |
Compared with STM8L051F3P6, STM8L101F3TDRTR trades ADC/DAC for IR modulation and LED drive - ideal for remote control or indicator-only roles. Against EFM8LB12F32ES1, it offers simpler debug (SWIM vs. JTAG/SWD) and lower toolchain overhead, at higher active current.
Availability
STM8L101F3TDRTR is available at Aetrix Electronics and suitable for wireless sensor nodes, smart metering endpoints, IR remote transmitters, and industrial status indicators requiring stable component supply across long-lifecycle industrial programs.
Supply support for STM8L101F3TDRTR 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.
The STM8L series targets ultra-low-power embedded applications - emphasizing sub-µA sleep, integrated peripherals for sensor interfacing, and robust operation across extended temperature ranges in constrained environments.
FAQ
What is the maximum operating frequency and corresponding power consumption of STM8L101F3TDRTR?
The STM8L101F3TDRTR operates up to 16 MHz using its internal 16 MHz RC oscillator. At 16 MHz and 3.0 V supply, typical active-mode current is 2.4 mA (150 µA/MHz × 16 MHz). This value scales linearly with frequency and is validated across the full 1.65–3.6 V supply range per datasheet Table 18.
Does STM8L101F3TDRTR support in-circuit programming after soldering?
Yes - it supports in-circuit programming via the single-wire SWIM interface using standard ST-LINK/V2 or compatible debuggers. No bootloader is required; programming occurs directly through the SWIM pin (Pin 15 in UFQFPN20), enabling field firmware updates without removing the MCU from the PCB.
Can PA0 be used simultaneously as an LED driver and a general-purpose input?
No - PA0 is a shared function pin: when configured as high-sink LED/IR driver (push-pull output), it cannot serve as an input. Its alternate functions are mutually exclusive per register configuration. Input use requires disabling the LED driver mode and configuring GPIO direction and pull-up/down accordingly.
Is there hardware support for AES or other cryptographic functions in STM8L101F3TDRTR?
No - the STM8L101F3TDRTR does not include dedicated cryptographic accelerators or hardware AES engines. Security relies on software-based implementations or external secure elements. For authenticated firmware updates or secure communication, developers must implement algorithms in Flash-resident code with appropriate memory protection.
STM8L101F3TDRTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-LQFP
- 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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 1.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8L101F3TDRTR FAQ
1.How can I place an order for STM8L101F3TDRTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L101F3TDRTR 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 STM8L101F3TDRTR reliable?
The price and inventory of STM8L101F3TDRTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L101F3TDRTR is usually 5 days.
3.What payment methods are accepted for STM8L101F3TDRTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L101F3TDRTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L101F3TDRTR?
STM8L101F3TDRTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L101F3TDRTR 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 STM8L101F3TDRTR?
For technical support, including STM8L101F3TDRTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L101F3TDRTR requirements.
6.How does Aetrix verify that STM8L101F3TDRTR is sourced from the original manufacturer or authorized distributors?
All STM8L101F3TDRTR 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 STM8L101F3TDRTR meets industry standards.
7.What is the process for return or replacement of STM8L101F3TDRTR?
All STM8L101F3TDRTR units undergo pre-shipment inspection (PSI). If there is an issue with STM8L101F3TDRTR, 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 STM8L101F3TDRTR part is unused and in its original packaging.
Return procedure for STM8L101F3TDRTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8L101F3TDRTR Tags
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