STM8L101F2P6 - 16MHz 4KB Flash Ultra-Low-Power MCU | STMicroelectronics
MPN: STM8L101F2P6 ✓ ActiveSTM8L101F2P6 Overview
An ultra-low-power microcontroller is an embedded controller designed to minimize energy consumption while retaining real-time processing and communication functions. The STM8L101 belongs to the STM8L EnergyLite family, which combines a low-voltage 8-bit architecture with power-saving operating modes. Its hierarchy is STM8L microcontroller, 8-bit MCU, embedded microcontroller, and semiconductor, positioning it between simple logic controllers and more capable 32-bit embedded processors.
Key features include 16 MHz maximum clock speed, 4 KB of Flash memory, and a 1.65 V to 3.6 V supply range. Low-current operation includes 0.3 µA in Halt mode and 0.8 µA in Active-halt mode. The device provides 18 I/O ports and integrated USART, SPI, and I2C interfaces, reducing the need for external serial-interface components in compact industrial, sensing, and consumer-control products.
The enhanced STM8 CPU core provides increased processing performance of up to 16 MIPS at 16 MHz. Multifunction timers support periodic timing, input capture, output compare, and PWM-oriented control tasks, while integrated comparators can support threshold detection and low-component-count signal conditioning. This combination of general-purpose serial connectivity and low-power peripherals makes the MCU suitable for systems that must process small amounts of local data without continuously running at maximum clock speed.
Typical applications include low-power sensor nodes, compact industrial monitoring devices, battery-powered controls, simple motor or actuator controllers, connected sensing equipment, and cost-sensitive embedded products. The 20-TSSOP package provides a conventional surface-mount footprint for automated assembly, while the 3 V-class operating range accommodates energy-efficient sensor, communications, and control subsystems.
Designers should verify the complete pin assignment and peripheral configuration against the manufacturer datasheet before layout release. The 1.65 V to 3.6 V range also requires attention to the voltage thresholds of connected sensors and serial peripherals, since an MCU operating near the lower supply limit may not support every external device's input level. Decoupling and low-power-mode transitions should be validated on the finished board.
This product data consolidates distributor specifications, package details, low-power characteristics, interface coverage, application guidance, and qualified comparison candidates into an engineering-focused reference. It also distinguishes verified drop-in candidates from broader functional alternatives, helping designers assess sourcing options without overlooking firmware, memory, and pin-compatibility validation.
Drop-in alternatives for STM8L101F2P6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STM8L101F2P6 (same form factor and footprint) — differing in Package, Supply Voltage Range, Flash Memory, Operating Temperature Range, Product Type.
STM8L151F3P6
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →MN101E31GRD
✅ Drop-In📋 Reference alternative (not in catalog)
STM8L101F2P6 Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit ultra-low-power microcontroller (MCU) |
| Product Family | STM8L EnergyLite |
| Maximum Clock Speed | 16 MHz |
| Maximum CPU Performance | 16 MIPS at 16 MHz |
| Flash Memory | 4 KB |
| Supply Voltage Range | 1.65 V to 3.6 V |
| Halt Current | 0.3 µA |
| Active-halt Current | 0.8 µA |
| I/O Port Count | 18 ports |
| Serial Interfaces | USART, SPI, and I2C |
| Analog Peripherals | Integrated comparators |
| Timer Peripherals | Multifunction timers |
| Package | 20-pin TSSOP |
| Package Dimensions | 3 mm x 3 mm x 0.60 mm |
| Operating Temperature Range | -40 °C to +85 °C |
| Lifecycle Status | Active |
| RoHS Compliance | RoHS compliant |
STM8L101F2P6 3 mm x 3 mm x 0.60 mm Pin Configuration Guide
Pin configuration for STM8L101F2P6 (3 mm x 3 mm x 0.60 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM8L101F2P6.
Refer to the datasheet for full pin configuration.
Typical Applications
STM8L101F2P6 is suitable for 6 applications: Low-Power Sensor Nodes, Battery-Powered Remote Controls, Industrial Monitoring Modules, PWM and Actuator Control, Compact Communication Equipment, Energy-Efficient Consumer Devices.
Low-Power Sensor Nodes
The STM8L101F2P6 fits compact sensor nodes because it combines a 16 MHz CPU, 4 KB of Flash, and low-current Halt and Active-halt modes. A node can wake periodically, sample a sensor, process the result locally, and return to a low-power state. The 1.65 V to 3.6 V supply range supports energy-efficient 3 V designs, while the 0.3 µA Halt figure provides a useful baseline. Final battery-life calculations must include sensor leakage, regulator loss, and wake-up frequency because the MCU value alone does not represent total system current.
Recommended
Battery-Powered Remote Controls
The STM8L101F2P6 is suitable for compact battery-operated controls that periodically read inputs or drive a simple display. Its 16 MHz maximum clock provides enough performance for straightforward debouncing, state-machine logic, and serial communication without requiring a 32-bit MCU. The low-power operating modes can reduce consumption between user actions. Firmware should disable unused peripherals, configure unused I/O appropriately, and use the lowest acceptable clock setting during idle periods to improve the overall battery budget.
Recommended
Industrial Monitoring Modules
The STM8L101F2P6 can support small industrial monitoring modules that combine local threshold detection with a low-rate communications link. Its integrated comparators are useful for basic limit monitoring, multifunction timers support periodic measurement and output functions, and USART, SPI, and I2C provide options for connecting sensors or transceivers. The 20-pin TSSOP package supports automated assembly. For factory deployments, verify the operating temperature range of -40 °C to +85 °C and validate isolation, surge immunity, and grounding at the system level.
Recommended
PWM and Actuator Control
The STM8L101F2P6 is appropriate for compact PWM and actuator-control products because its multifunction timers provide dedicated timing resources for periodic generation, capture, and compare operations. At up to 16 MHz and 16 MIPS, the 8-bit core can coordinate digital control logic while communicating through I2C, SPI, or USART. Designers should confirm the exact timer channel and pin mapping from the manufacturer datasheet, account for output-driver rise and fall times, and keep inductive loads or motor currents away from the MCU supply pins.
Recommended
Compact Communication Equipment
The STM8L101F2P6 works as a supervisory controller in compact serial communication equipment because USART, SPI, and I2C are integrated. It can manage configuration, collect status from sensors, and provide protocol bridging or periodic reporting without an external communications controller. The 4 KB Flash capacity favors focused firmware rather than complex buffering, while the 16 MHz clock provides deterministic service timing. Production designs should include watchdog-style recovery, bus pull-up planning, and level-shifting when connected devices use a different voltage domain.
Recommended
Energy-Efficient Consumer Devices
The STM8L101F2P6 is suitable for small consumer products that perform local control and communicate occasionally. Its low-voltage operation, 20-pin TSSOP footprint, and low-power modes can simplify compact product construction while preserving the serial interfaces needed for configuration or external accessories. The 4 KB Flash limit requires concise firmware and careful code-size budgeting. Before release, measure active and standby current with the actual enclosure, sensors, indicator LEDs, and power regulators because system-level leakage can dominate MCU consumption.
Recommended
Engineering reference data for STM8L101F2P6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8L151F3P6 | MN101E31GRD |
|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | Panasonic |
| Package | 20-pin TSSOP | 20-pin TSSOP | 20-pin TSSOP |
| Architecture | 8-bit STM8L | 8-bit STM8L | 8-bit MCU |
| Flash Memory | 4 KB | Up to 8 KB | Up to 8 KB |
Key Differentiators
- Lower program-memory demand in the targeted control design (vs STM8L151F3P6)
- Documented ultra-low-power operating characteristics (vs MN101E31GRD)
- Single-part integration of three common serial interfaces (vs MN101E31GRD)
Design Notes
Design the 1.65 V to 3.6 V supply and all I/O thresholds as one electrical budget. Confirm that sensors, pull-ups, transceivers, and indicators remain compatible at the minimum operating voltage. The quoted 0.3 µA Halt and 0.8 µA Active-halt currents are MCU-level figures; board leakage, regulator quiescent current, and wake-up peripherals can dominate a battery-powered design.
Route the 20-pin TSSOP footprint only after checking the official package drawing and pin table. Place the MCU close to its decoupling network, keep the supply and ground return paths short, and provide adequate ground-plane area around the device. The supplied excerpts do not contain the complete pinout, so pin names and alternate functions must not be inferred from the generic STM8L family diagrams.
Do not assume that every same-package MCU is firmware- and pin-compatible. Before substituting a candidate, compare the complete pin map, alternate-function assignments, clock tree, low-power behavior, timer channels, serial peripheral locations, programming interface, and interrupt vector layout. Firmware compiled for the STM8L101F2P6 should be retested at every voltage and temperature corner even if the replacement uses the same 20-pin TSSOP footprint.
Keep SPI, I2C, and other communication traces away from noisy switching nodes and route them over a continuous ground reference where practical. I2C requires deliberate pull-up placement and rise-time verification, while SPI edge-rate requirements depend on slave capacitance and clock distribution. Although the MCU runs at 16 MHz maximum, external bus timing and electromagnetic compatibility are determined by the complete connected circuit.
Compliance Information
The verified specification excerpt identifies the STM8L101F2P6 as RoHS compliant. No verified REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification statement was supplied.