STM8L101K3T6 - 8-Bit 16MHz 8KB MCU | STMicroelectronics
MPN: STM8L101K3T6 ✓ Active| Qty | Unit Price | Extended |
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| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
STM8L101K3T6 Overview
The STM8L101 belongs to the STM8L family of 8-bit microcontrollers, a product class positioned between simple fixed-function controllers and more complex application processors. Its EnergyLite architecture targets low-power embedded control, while the STM8L101 device family combines Flash memory, timers, comparators, USART, SPI, and I2C in a compact package.
Verified distributor information identifies a 1.65 V to 3.6 V supply range, 18 I/O ports, 16 MHz clock capability, 8 KB Flash, and a 32-pin LQFP package. Other search results describe the device as an 8-bit ultralow-power MCU with multifunction timers, comparators, USART, SPI, and I2C. Available snippets also identify 0.3 uA Halt current and 0.8 uA Active-halt current for one variant of the STM8L family; applicability to this exact orderable MPN should be confirmed against the manufacturer datasheet.
Typical uses include low-power sensor nodes, compact industrial controllers, battery-operated instruments, communication modules, and low-cost embedded products where an 8-bit CPU, serial interfaces, and modest Flash capacity are sufficient. The device is not an STM32 Cortex-M part, so software, peripheral compatibility, and boot or debugging arrangements should be evaluated explicitly during migration.
A key design consideration is the low-voltage supply range. The power rail, decoupling, input tolerance, and peripheral voltage assumptions must be checked against the exact datasheet before layout or firmware release. For PCB design, preserve the 32-LQFP land pattern and route the supply and ground pins according to the manufacturer recommendations. For firmware, confirm timer, USART, SPI, and I2C instance availability against the exact STM8L101K3T6 pin and peripheral configuration.
This page consolidates verified distributor specifications, source links, application guidance, and conservative replacement information. It does not infer unprovided electrical limits, pin functions, lifecycle guarantees, pricing, or package details that are absent from the supplied sources.
Drop-in alternatives for STM8L101K3T6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STM8L101K3T6TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8L101K3T3
✅ Drop-In📋 Reference alternative (not in catalog)
STM8L101K3T3TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8L101K3T6
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →STM8L101K3T3TR
✅ Drop-In📋 Reference alternative (not in catalog)
STM8L101K3T6 Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit ultralow-power microcontroller |
| CPU Family | STM8L EnergyLite |
| Maximum Clock Frequency | 16 MHz |
| Flash Memory | 8 KB |
| Supply Voltage Range | 1.65 V to 3.6 V |
| I/O Ports | 18 |
| Serial Interfaces | USART, SPI, I2C |
| Peripheral Features | Multifunction timers and comparators |
| Package | 32-LQFP, 7 x 7 mm |
| Mounting Type | Surface Mount |
| Memory Type | Flash |
| Core Architecture | 8-bit CISC |
| Operating Voltage | 1.8 V / 2.5 V / 3.3 V |
| Halt Current | 0.3 uA, family-level search result |
| Active-halt Current | 0.8 uA, family-level search result |
| RoHS Status | RoHS compliant |
| Manufacturer Product Status | ACTIVE |
| Pin Count | 32 pins |
| Supply Package Form | Tray |
STM8L101K3T6 tray Pin Configuration Guide
Pin configuration for STM8L101K3T6 (tray 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 STM8L101K3T6.
Refer to the datasheet for full pin configuration.
Typical Applications
STM8L101K3T6 is suitable for 6 applications: Low-Power Sensor Node, Battery-Powered Instrument, Industrial Control Module, Communication Interface, Compact Actuator Controller, Portable Data Acquisition.
Low-Power Sensor Node
The STM8L101K3T6 fits compact sensor nodes that must wake periodically, read an analog or digital sensor, process a small amount of data, and return to a low-power state. Its 8-bit architecture and 8 KB Flash provide enough room for focused embedded control without the resource demand of a larger Cortex-M MCU. The verified 1.65 V to 3.6 V supply range can support low-voltage sensor platforms when the power source and regulator are designed around the complete current budget. Use the USART, SPI, or I2C interface for external sensing and communication, and confirm the exact pin mapping before finalizing the PCB.
Recommended
Battery-Powered Instrument
The STM8L101K3T6 is appropriate for a compact battery-powered instrument when low-voltage operation and an 8-bit control core are sufficient. The MCU can manage a display or control interface, sample a sensor, and use a serial transceiver for data transfer while limiting active processing time. The supplied search results report 0.3 uA Halt current and 0.8 uA Active-halt current for the STM8L family, but the exact STM8L101K3T6 conditions must be confirmed before using those figures in a battery-life estimate. Firmware should disable unused peripherals and use the lowest acceptable clock configuration during idle periods.
Recommended
Industrial Control Module
The STM8L101K3T6 can serve as the local controller in a small industrial module that coordinates inputs, indicators, actuators, and a serial supervisory link. Its multifunction timers support periodic timing, while USART, SPI, and I2C provide paths to sensors, memory, or a communications interface. The 32-LQFP package keeps the design compact, although the 18 verified I/O ports may require an expander when the external interface count is high. Validate industrial temperature requirements, ESD protection, isolation, grounding, and regulatory limits separately; the supplied sources do not provide a complete industrial qualification record.
Recommended
Communication Interface
STM8L101K3T6 is suitable for a small protocol or gateway interface when the design needs an 8-bit microcontroller with USART, SPI, and I2C rather than high compute throughput. The MCU can bridge a local sensor bus to a host processor, manage framing, and provide status or control outputs through the available serial peripherals. The 16 MHz clock and 8 KB Flash provide a constrained firmware budget, so protocol complexity, buffering, and boot logic should be planned before selection. A communications module should also account for connector protection, signal termination, isolation, and grounding requirements not specified by the MCU sources.
Recommended
Compact Actuator Controller
The STM8L101K3T6 can control small actuators and relays where the system needs timers, comparators, and serial control but not a large real-time processor. Timer outputs can organize switching or timing functions, while comparator inputs can support simple threshold decisions. The MCU’s limited Flash should be reserved for control state, protection logic, and a concise user interface rather than large application frameworks. Confirm whether the required actuator voltage and current can be isolated from the MCU supply, and use external transistors, drivers, protection networks, and appropriate isolation rather than driving loads directly from an unspecified I/O rating.
Recommended
Portable Data Acquisition
The STM8L101K3T6 can be used in a compact data-acquisition front end for digital sensors, keypad input, status LEDs, and a serial host interface. Its 8-bit core is well matched to straightforward sampling, filtering, thresholding, and display or logging control when the data rate is modest. The verified 18 I/O ports provide a meaningful amount of parallel connectivity, but analog signal conditioning and sensor excitation are external to the MCU. For a battery or USB-powered portable design, account for regulator efficiency, sampling duration, wake-up latency, and the energy cost of serial communication in addition to the MCU’s headline clock and memory specifications.
Recommended
Recommended Products Summary
Engineering reference data for STM8L101K3T6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM8L101K3T6TR | STM8L101K3T3 | STM8L101K3T3TR |
|---|---|---|---|---|
| Package | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) | 32-LQFP (7x7 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
Key Differentiators
- Dedicated 8-bit STM8L EnergyLite positioning (vs STM8L052C6T6)
- Compact 32-LQFP implementation (vs STM8L101K3T3)
- Low-voltage embedded-control focus (vs STM8L152C4T6)
Design Notes
Design the power tree around the verified 1.65 V to 3.6 V STM8L101K3T6 supply range. Place the regulator output and decoupling capacitors close to the MCU supply pins, keep analog and digital returns connected according to the manufacturer layout guidance, and calculate the worst-case current from active processing plus enabled peripherals rather than using an idle-state figure alone. The supplied source does not specify absolute maximum ratings, regulator sequencing, or decoupling values, so those details must be taken from the exact datasheet before layout release.
Preserve the 32-LQFP footprint and verify pin numbering against the official package drawing before schematic capture. Route sensitive serial, timer, and comparator signals away from switching nodes and high-current actuator traces. Provide a stable ground reference, short supply connections, and accessible test points for reset, clock, UART, and power rails. Because the supplied data does not include the complete pin map, do not infer alternate-function assignments from the package name alone.
Do not treat a related STM8L order code as a drop-in substitute solely because its flash memory and 8-bit family name appear similar. The supplied cross-reference results include STM8L101K3T6TR, STM8L101K3T3, and STM8L101K3T3TR, but they do not provide a complete verified pin, temperature, or electrical comparison. Check the ordering suffix, package dimensions, pin names, supply limits, peripheral resources, software support, and lifecycle status independently before changing a released BOM.
Compliance Information
The supplied Digchips result states RoHS compliant. No verified REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 information was supplied. AEC-Q100 is not applicable to this general-purpose microcontroller based on the provided source data.
