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STMicroelectronics STM8L101F2P3TR
- Part No.:
- STM8L101F2P3TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
STM8L101F2P3TR.pdf
- Description:
- IC MCU 8BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,487
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Product details
Overview
STM8L101F2P3TR 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 STM8L101F2P3TR datasheet, STM8L101F2P3TR pinout, STM8L101F2P3TR application, or STM8L101F2P3TR equivalent, key selection criteria include ultra-low active-halt current (0.8 µA), 20-pin TSSOP package compatibility, 16 MHz RC oscillator accuracy (±1% at 3 V), and IR modulation capability with dedicated beeper timer.
Technical Context
The STM8L101F2P3TR implements a CISC-based STM8 core delivering up to 16 MIPS at 16 MHz, with nested interrupt controller supporting 29 external sources and software-configurable priority levels. Its clock system integrates dual RC oscillators: a 16 MHz high-speed internal (HSI) for main execution and a 38 kHz low-speed internal (LSI) for independent watchdog (IWDG) and auto-wakeup unit (AWU).
Power management includes three low-power modes - Wait (CPU halted, peripherals active), Active-halt (CPU and most peripherals halted, RAM retained), and Halt (full retention at 0.3 µA) - enabled by ultra-low-power POR/PDR and voltage regulator architecture optimized for sub-2 V operation.
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 edge nodes. |
| Flash Memory | 4 Kbytes with ECC and read/write protection - supports robust firmware storage and secure in-application updates. |
| RAM Size | 1.5 Kbytes static RAM - sufficient for sensor data buffering and stack depth in low-complexity embedded applications. |
| Supply Voltage | 1.65 V to 3.6 V - allows direct integration with single-cell Li-ion, LiFePO₄, or coin-cell batteries without LDO overhead. |
| Low-Power Current | Halt mode: 0.3 µA @ 3 V; Active-halt: 0.8 µA - extends multi-year battery life in always-on monitoring systems. |
| Operating Temperature | -40 °C to +85 °C - qualified for industrial and consumer-grade portable equipment deployment. |
| Communication Interfaces | SPI, I²C (400 kHz multimaster/slave), USART with fractional baud rate generator - enables flexible connectivity to sensors, displays, and host controllers. |
Pinout & Package
The STM8L101F2P3TR is housed in a 20-pin TSSOP package (6.5 × 4.4 mm, 0.65 mm pitch), optimized for compact PCB layouts and automated assembly. Pin functions are validated per ST's DocID15275 Rev 16, Figure 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Main 1.65–3.6 V supply input; decoupling required within 1 cm of pin for stable low-power operation. |
| VSS | Ground reference | Digital ground return path; must be connected to low-impedance plane to minimize noise coupling into analog peripherals. |
| NRST | Reset input | Active-low reset with internal pull-up; accepts external push-button or supervisor IC assertion for controlled startup. |
| PA0 | I/O with LED driver | High-sink capable (up to 20 mA) - directly drives infrared LEDs or status indicators without external transistor. |
| PA1–PA7 | General-purpose I/O | All mappable to external interrupts; support programmable pull-ups and true open-drain configuration for I²C bus interfacing. |
| PC0–PC5 | Peripheral I/O | Shared with USART TX/RX, SPI SCK/MOSI/MISO, I²C SCL/SDA - multiplexing managed via peripheral enable registers. |
Key Features
| Feature | Design Value |
|---|---|
| Infrared (IR) interface | Dedicated hardware modulation path using beeper timer (1/2/4 kHz) and PA0 output - eliminates CPU overhead for remote control signal generation. |
| Ultra-low-power Halt mode | 0.3 µA typical current draw with full RAM retention - enables wake-on-external-interrupt response within 4 µs after wakeup event. |
| SWIM debug interface | Single-wire on-chip programming and non-intrusive debugging - reduces debug footprint to one pin, ideal for space-constrained designs. |
| Error correction code (ECC) | Automatic detection and correction of single-bit Flash errors - improves firmware reliability in long-life battery-operated deployments. |
| Flexible clock sources | 16 MHz HSI (±1% @ 3 V) + 38 kHz LSI - eliminates need for external crystals in cost-sensitive timing applications. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via UART-to-LoRa module every 5 minutes. IC Role / Device Role / Timing Role: Central controller managing sensor acquisition, low-power scheduling, and IR-aided local diagnostics. Use Value: 0.8 µA Active-halt current extends CR2032 battery life beyond 3 years while maintaining fast wake-up (<4 µs) for scheduled measurements. |
Use Scenario: Handheld pulse oximeter with OLED display, optical sensor interface, and button-driven UI. IC Role / Device Role / Timing Role: Main MCU handling ADC sampling, LED drive timing, and I²C display control. Use Value: Integrated 16-bit timers precisely synchronize LED pulsing and photodiode sampling; 1.5 KB RAM buffers waveform data pre-transmission. |
| Smart Home Remote Control | Industrial Asset Tracker |
Use Scenario: IR remote with multi-protocol support (NEC, RC-5) and user-programmable button mapping. IC Role / Device Role / Timing Role: IR signal generator and button scan controller with EEPROM-stored configuration. Use Value: Dedicated IR modulation logic and beeper timer generate compliant carrier signals without CPU intervention, reducing firmware complexity. |
Use Scenario: GPS-enabled tracker logging location every 15 minutes and waking only during transmission windows. IC Role / Device Role / Timing Role: Power manager coordinating GPS power-down, RTC wake events, and cellular modem handshaking. Use Value: Auto-wakeup unit (AWU) triggers periodic wake-up from Halt mode; 38 kHz LSI ensures accurate sleep interval timing independent of main clock. |
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 | 8 Kbytes Flash, same 20-pin TSSOP package, but lacks IR interface and beeper timer; higher active current (180 µA/MHz vs. 150 µA/MHz). | Preferred where larger firmware footprint is needed but IR functionality is unnecessary. | Select when firmware size exceeds 4 KB and IR modulation is not required - retains identical pinout and debug interface. |
| EFM8LB12F32ES1-QFP20 | Silicon Labs 8051 core; 32 KB Flash, 2.25 KB RAM; lower Halt current (0.2 µA), but requires external crystal for precise timing and lacks integrated IR modulation. | Better suited for applications needing larger code space and tighter timing tolerance, but adds BOM cost and layout area. | Choose when >8 KB Flash is mandatory and sub-0.3 µA Halt current is critical - verify crystal dependency against system-level timing requirements. |
Compared with STM8L051F3P6, the STM8L101F2P3TR offers IR-specific hardware and lower dynamic power; versus EFM8LB12F32ES1-QFP20, it trades Flash size and ultra-deep sleep for integrated IR capability and zero-crystal system simplicity.
Availability
STM8L101F2P3TR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smart home remotes, and industrial asset trackers requiring stable component supply across extended production lifecycles.
Supply support for STM8L101F2P3TR 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 specializing in microcontrollers, power management, and sensing solutions for industrial, automotive, and consumer markets.
The STM8L series targets ultra-low-power embedded applications demanding extended battery life, robust operation across wide voltage ranges, and minimal external components - particularly in space- and energy-constrained IoT endpoints.
FAQ
What is the maximum operating frequency and corresponding current consumption of the STM8L101F2P3TR?
The STM8L101F2P3TR operates up to 16 MHz using its internal 16 MHz RC oscillator. At this frequency and VDD = 3.0 V, typical active-mode current is 150 µA/MHz (2.4 mA total), verified in Table 18 of DocID15275 Rev 16. No external clock source is required for full-speed operation.
Does the STM8L101F2P3TR support in-circuit programming and debugging?
Yes - it features a hardware Single Wire Interface Module (SWIM) enabling both in-circuit programming and non-intrusive debugging via a single pin (SWIM). This is confirmed in Section 3.3 of the datasheet and supported by ST-LINK/V2 and compatible debug probes.
Can the STM8L101F2P3TR drive infrared LEDs directly?
Yes - PA0 is a high-sink I/O pin rated for up to 20 mA, explicitly designed to drive infrared LEDs without external drivers. The integrated beeper timer generates 1/2/4 kHz modulation signals, and the IR interface block handles carrier envelope generation per Section 3.13.
What are the memory protection options available on this device?
The STM8L101F2P3TR provides flexible read/write protection for Flash and data EEPROM via option bytes, including full readout protection (ROP), write protection for specific Flash sectors, and data EEPROM lock bits. These are configured using the SWIM interface and detailed in Section 7 of the datasheet.
STM8L101F2P3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM8L101F2P3TR FAQ
1.How can I place an order for STM8L101F2P3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM8L101F2P3TR 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 STM8L101F2P3TR reliable?
The price and inventory of STM8L101F2P3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM8L101F2P3TR is usually 5 days.
3.What payment methods are accepted for STM8L101F2P3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM8L101F2P3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM8L101F2P3TR?
STM8L101F2P3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM8L101F2P3TR 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 STM8L101F2P3TR?
For technical support, including STM8L101F2P3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM8L101F2P3TR requirements.
6.How does Aetrix verify that STM8L101F2P3TR is sourced from the original manufacturer or authorized distributors?
All STM8L101F2P3TR 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 STM8L101F2P3TR meets industry standards.
7.What is the process for return or replacement of STM8L101F2P3TR?
All STM8L101F2P3TR units undergo pre-shipment inspection (PSI). If there is an issue with STM8L101F2P3TR, 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 STM8L101F2P3TR part is unused and in its original packaging.
Return procedure for STM8L101F2P3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM8L101F2P3TR Tags
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