STM8L101K3T3 - 16MHz 8KB 8-Bit MCU | STMicroelectronics
部品番号: STM8L101K3T3 ✓ 生産中STM8L101K3T3 概要
An ultra-low-power microcontroller is a semiconductor category intended to minimize both active and standby energy consumption. Within the product hierarchy, the STM8L101K3T3 belongs to the STM8L family of 8-bit RISC microcontrollers and serves as a low-power system controller for battery-operated, portable and space-constrained products. Its low-power operating range is especially relevant to designs where the controller must remain responsive while consuming minimal energy between user actions or sensor events.
Principal features include operation from 1.65 V to 3.6 V, a maximum CPU frequency of 16 MHz, up to 8 KB of Flash memory, 18 I/O ports and an enhanced STM8 CPU core capable of up to 16 MIPS at 16 MHz. The device family also provides multifunction timers, comparators, USART, SPI and I2C interfaces, allowing a compact design to handle timing, analog comparisons and serial communication without requiring several discrete interface components.
The STM8 CPU core provides an 8-bit processing architecture optimized for compact embedded control rather than high-performance computing. At 16 MHz, the core can execute up to 16 million instructions per second, which is appropriate for state machines, sensor aggregation, actuator control and low-rate serial data handling. The 8 KB Flash limit means that firmware and constants must be planned carefully, particularly when application code, boot logic and lookup tables share the available program-memory budget.
Typical uses include battery-powered sensor nodes, compact industrial controllers, home-automation endpoints, portable measurement instruments, low-power remote controls and embedded accessories. Its combination of serial interfaces supports sensors and transceivers connected through I2C or SPI, while USART can connect the controller to a host, modem or local configuration interface. The 32-LQFP package also offers enough peripheral connections for systems that need more I/O than a compact 20-pin package can provide.
Designers should verify the exact pin assignments, alternate-function limitations and low-power mode behavior against the manufacturer documentation before finalizing the PCB. Decoupling should be placed directly at the supply pins, programming and reset access must remain available, and firmware should avoid unnecessary peripheral activity during sleep. These practices help preserve the device family's intended low-power behavior while preserving communication reliability.
This product page consolidates the device's confirmed electrical specifications, package information, lifecycle status and application guidance with a practical comparison against the closest documented STM8L101K3 variants. It also highlights the restrictions involved when replacing one ordered MPN with another temperature-grade or packing option.
ドロップイン代替品: STM8L101K3T3 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM8L101K3T3 （同一形状・フットプリント） — 相違点: Flash Memory, Package, Product Type, Serial Interfaces.
STM8L101K3T6
✅ ドロップイン価格はお問い合わせください
データシートを見る →STM8L101K3T6TR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM8L101K3T3 最大定格＆電気的特性
| Product Type | 8-bit ultra-low-power microcontroller |
| Maximum CPU Frequency | 16 MHz |
| Maximum Processing Performance | 16 MIPS at 16 MHz |
| Flash Memory | Up to 8 KB (8K × 8) |
| Supply Voltage Range | 1.65 V to 3.6 V |
| I/O Port Count | 18 ports |
| パッケージ | 32-LQFP, 7 mm × 7 mm |
| ピン数 | 32 pins |
| CPU Architecture | Enhanced STM8 8-bit RISC core |
| Timers | Multifunction timers |
| Analog Peripherals | Comparators |
| Serial Interfaces | USART, SPI and I2C |
| 動作温度範囲 | -40°C to +125°C |
| ライフサイクル状態 | Active |
| RoHS Compliance | Compliant |
| 実装タイプ | Surface mount |
| Manufacturer | STMicroelectronics |
STM8L101K3T3 32-lqfp, 7 mm × 7 mm ピン配置ガイド
STM8L101K3T3 (32-lqfp, 7 mm × 7 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STM8L101K3T3.
詳細は データシート をご参照ください。
主な用途
STM8L101K3T3 の用途: 6 件s: Battery-Powered Sensor Node, Compact Industrial Control Module, Home Automation Endpoint, Portable Measurement Instrument, Low-Power Remote Control, Smart Home Sensor Gateway.
Battery-Powered Sensor Node
The STM8L101K3T3 fits a battery-powered sensor node because its STM8L low-power architecture operates from 1.65 V to 3.6 V while retaining a 16 MHz execution rate. The controller can sample sensors, apply filtering and manage a duty-cycled sleep schedule without keeping every peripheral active. Its 8 KB Flash budget suits compact acquisition logic, while the 18 available I/O ports provide connections for sensors, status indicators and a low-power enable path.
おすすめ
Compact Industrial Control Module
The STM8L101K3T3 is appropriate for compact industrial control modules that combine sequencing, discrete inputs and limited local communications. Its 16 MHz STM8 core supports responsive state-machine control, and the integrated comparators can assist with threshold and fault detection. The 1.65 V to 3.6 V supply range supports low-energy logic rails, while USART, SPI and I2C provide paths to local sensors, transceivers and service connectors.
おすすめ
Home Automation Endpoint
The STM8L101K3T3 can serve as a home-automation endpoint for a compact wall controller, room sensor or appliance interface. Its I2C and SPI peripherals support digital sensors and local transceivers, while USART offers a simple path to a host controller or configuration tool. At 16 MHz, the MCU provides enough performance for command handling, indicator logic and debounce routines, and the 8 KB Flash capacity favors focused embedded tasks.
おすすめ
Portable Measurement Instrument
The STM8L101K3T3 supports portable measurement instruments that need local control, data acquisition and a simple serial link. Its 16 MHz processing rate is suitable for digital filtering, calibration tables and instrument-state management, while its 18 I/O ports can serve displays, switches and sensors. The 1.65 V minimum operating voltage is useful for battery-based designs, provided the firmware disables unused peripherals before the controller enters its low-power state.
おすすめ
Low-Power Remote Control
The STM8L101K3T3 is well suited to a low-power remote control because it combines an 8-bit STM8L controller with a 16 MHz maximum clock and a supply range beginning at 1.65 V. It can decode buttons, drive indicators and manage a short-range communication link without requiring a larger processor. The compact 32-LQFP package preserves PCB area, while the integrated USART, SPI and I2C interfaces offer flexibility for an attached radio or sensor.
おすすめ
Smart Home Sensor Gateway
The STM8L101K3T3 can act as a smart-home sensor gateway when the design requires local aggregation rather than a full application processor. Its 8 KB Flash can hold routing logic and device filtering, and the 16 MHz core can handle periodic sensor polling, protocol framing and status reporting. I2C and SPI suit short-range digital devices, while USART provides a straightforward bridge to a higher-level communications module or service interface.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM8L101K3T3 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM8L101K3T6 | STM8L101K3T6TR |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-LQFP (7 mm × 7 mm) | 32-LQFP (7 mm × 7 mm) - same | 32-LQFP (7 mm × 7 mm) - same |
| Maximum CPU Frequency | 16 MHz | 16 MHz | 16 MHz |
| Maximum Processing Performance | 16 MIPS at 16 MHz | 16 MIPS at 16 MHz | 16 MIPS at 16 MHz |
| Flash Memory | Up to 8 KB | Up to 8 KB | Up to 8 KB |
| Supply Voltage Range | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
| Temperature Grade | T3 grade, up to 85°C | T6 grade, up to 125°C | T6 grade, up to 125°C |
| Serial Interfaces | USART, SPI and I2C | USART, SPI and I2C | USART, SPI and I2C |
| I/O Port Count | 18 ports | 18 ports | 18 ports |
主な差別化要因
- Lower-temperature-grade ordering option （vs STM8L101K3T6)
- Standard-temperature-grade alternative retains the full footprint （vs STM8L101K3T6TR)
- Compact low-voltage control platform （vs STM8L101K3T6TR)
設計ノート
Place the supply bypass capacitor directly beside the STM8L101K3T3 power pins and route the return path without narrow interruptions. Although the device operates down to 1.65 V, low supply voltage leaves less margin for trace resistance, source impedance and simultaneous peripheral current. Confirm the minimum operating voltage of every attached peripheral and size the regulator for the worst-case load rather than the controller's average current.
Use the manufacturer package drawing and pin-description table to assign every LQFP-32 connection. Keep programming, reset and clock-trace access available on the PCB, and avoid long branches beneath the device where they can increase coupling. The 18 I/O ports must be checked against alternate-function restrictions; a pin used for SPI, I2C or USART may not support every general-purpose input or output function at the same time.
Do not treat STM8L101K3T3, STM8L101K3T6 and STM8L101K3T6TR as identical manufacturing codes. The T6 variants extend the upper temperature limit by 40°C, and the TR suffix selects tape-and-reel packaging. Software should also avoid assuming that every peripheral remains clocked in a low-power mode. Disable unused peripherals and confirm the wake conditions, run-time state and timing behavior in the manufacturer documentation.
コンプライアンス情報
The component listing identifies the device as RoHS compliant. No additional REACH, lead-free, halogen-free or conflict-minerals declarations were identified.
