STM8L151R8T3 - 16MHz 64KB MCU | STMicroelectronics
MPN： STM8L151R8T3 ✓ 啟用中STM8L151R8T3 概覽
An ultra-low-power microcontroller is an integrated circuit optimized to minimize energy consumption while executing embedded control, measurement, communications, and interface tasks. The STM8L15xx family belongs to the STM8L EnergyLite architecture and is designed for battery-operated sensors, compact industrial controls, portable instruments, and connected products that must retain processing capability while spending little time in active or standby modes.
The STM8L151R8T3 combines a maximum 16 MHz enhanced STM8 CPU core with 64 KB Flash and 4 KB EEPROM. Its 12-bit ADC supports embedded analog measurement, while the high I/O count allows multiple digital inputs, outputs, communications interfaces, and external peripheral connections. The 1.8 V to 3.6 V operating range accommodates low-voltage sensor, metering, industrial, and consumer equipment.
The LQFP-64 package provides 54 I/O positions and a 10 mm by 10 mm body, making it practical for prototype boards and multiline industrial-control products. Its performance profile is suited to real-time control loops that do not require a 32-bit Cortex-M core but benefit from fast 8-bit execution, embedded nonvolatile data storage, and a broad set of GPIO resources. Integrated EEPROM can retain configuration and calibration values without occupying external Flash space.
Typical uses include low-energy environmental monitoring, compact motor and actuator controllers, industrial sensor nodes, portable measurement instruments, access-control equipment, and low-power data-acquisition systems. In each case, the device can combine analog sensing and control logic in a single package while supporting multiple digital interfaces and serial communications.
PCB design should preserve clean supply distribution, short analog-signal paths, and stable grounding around the ADC inputs. Place decoupling capacitors close to the supply pins, route high-current or switching signals away from sensitive analog traces, and consult the STM8L151R8 pin and package documentation before assigning every LQFP position. Verify the required clock, reset, programming, and peripheral functions against the device pin table.
This product page combines manufacturer and distributor specifications, practical application guidance, verified lifecycle information, and engineering-focused selection criteria. It also distinguishes exact ordering information from broader series-level claims so that engineers can assess the STM8L151R8T3 for low-power embedded designs without relying on a simple catalog summary.
直接替換替代品，適用於 STM8L151R8T3 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STM8L151R8T3 （相同外形與佔位） — 差異在於 CPU Architecture, Program Memory Type.
此產品無可直接替換的替代品。
申請替代品STM8L151R8T3 最大額定值與電氣特性
| Product Type | 8-bit ultra-low-power microcontroller (MCU) |
| CPU Architecture | 8-bit STM8 CPU |
| Maximum CPU Frequency | 16 MHz |
| Program Memory Type | Embedded Flash |
| Flash Memory Capacity | 64 KB |
| Flash Organization | 64K x 8 bits |
| EEPROM | 4 KB integrated EEPROM |
| Supply Voltage Range | 1.8 V to 3.6 V |
| ADC Resolution | 12 bits |
| I/O Port Count | 54 I/O ports |
| 封裝 | 64-pin LQFP |
| Package Dimensions | 10 mm x 10 mm |
| 安裝類型 | Surface mount |
| 生命週期狀態 | Active |
| Product Family | STM8L EnergyLite |
| Manufacturer Minimum Order Quantity | 960 units |
STM8L151R8T3 10 mm x 10 mm 腳位配置指南
STM8L151R8T3（10 mm x 10 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： STM8L151R8T3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L151R8T3 適用於 6 應用s: Battery-Powered Environmental Sensors, Industrial Sensor and Control Nodes, Portable Measurement Instruments, Low-Power Motor and Actuator Control, Connected Low-Power Data Acquisition, Local Audio Signal Control.
Battery-Powered Environmental Sensors
The STM8L151R8T3 fits compact environmental monitoring because it combines a 12-bit ADC with an ultra-low-power 8-bit CPU in a 64-pin LQFP package. The 1.8 V to 3.6 V operating range supports low-voltage sensor systems, while 54 I/O ports leave room for multiple digital inputs, alarms, and communications. A low-duty-cycle firmware design can wake the MCU to acquire measurements and return it to a low-power state between samples. The 4 KB EEPROM is useful for retaining calibration coefficients and configuration values, although update endurance must be checked for high-frequency logging.
推薦
Industrial Sensor and Control Nodes
The STM8L151R8T3 is well suited to distributed industrial sensing and control nodes that need substantial GPIO capacity without a 32-bit processor. Its 54 I/O ports can support digital sensors, relay outputs, status indicators, and local interlocks, while the 12-bit ADC handles analog process inputs. Operating from 1.8 V to 3.6 V simplifies integration with low-voltage sensor buses and regulated control rails. The 64-pin LQFP provides enough pin density for isolated communication, expansion connectors, and separate analog routing. Production designs should confirm the selected temperature grade and validate EMC behavior around the board’s switching nodes.
推薦
Portable Measurement Instruments
The STM8L151R8T3 can serve as the control and signal-conditioning microcontroller in a portable measurement instrument where low voltage and compactness are important. Its 16 MHz 8-bit core handles menu logic, calibration, and instrument control, while the 12-bit ADC performs local analog conversions. Sixty-four Flash kilobytes provides room for application firmware, and the integrated EEPROM can retain user settings and calibration tables. The broad GPIO count simplifies support for displays, buttons, status LEDs, and data interfaces. For accurate measurements, use careful analog layout, calibrated references, and firmware that averages or filters converter results as appropriate.
推薦
Low-Power Motor and Actuator Control
The STM8L151R8T3 is suitable for small motor, valve, and actuator controllers that combine timed outputs with local sensing. Its 16 MHz CPU provides deterministic control-loop execution, while 54 I/O ports simplify connections to limit switches, position sensors, drivers, and status indicators. The 12-bit ADC can monitor current or position-related analog signals where the system permits. Operation down to 1.8 V supports compact battery-powered equipment, but motor transients require careful filtering, grounding, and separation between noisy drive paths and control signals. Select external driver components for the motor voltage and current rather than driving loads directly from MCU GPIOs.
推薦
Connected Low-Power Data Acquisition
The STM8L151R8T3 can form the acquisition and control core of a connected, low-power data-acquisition module. Its 64 KB Flash accommodates protocol and acquisition firmware, while 4 KB EEPROM stores calibration and endpoint settings. The 12-bit ADC handles moderate-resolution sensor inputs and 54 I/O ports provide flexibility for status signals and peripheral interfaces. Its 1.8 V minimum supply supports energy-conscious designs. For remote sensor nodes, firmware should use the MCU’s low-power operating modes between acquisition bursts, and the board should isolate radio or communications circuitry to minimize digital noise coupling into analog inputs.
推薦
Local Audio Signal Control
The STM8L151R8T3 can act as the supervisory controller in a compact audio product handling mode selection, button input, status feedback, and volume-related control. Its numerous GPIO pins allow direct connection to codecs, display interfaces, and digital potentiometers, while the 12-bit ADC may support simple level monitoring. The STM8 CPU handles control tasks without occupying the resources of a larger application processor. Keep analog audio routing separate from MCU traces and bypass the MCU supply locally. For higher-fidelity or multichannel audio conversion, pair the controller with a dedicated codec and verify the required clock and interface timing.
推薦
推薦產品摘要
工程參考資料，適用於 STM8L151R8T3 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 64-pin LQFP, 10 mm x 10 mm |
| Brand | STMicroelectronics |
| CPU Architecture | 8-bit STM8 |
| Maximum CPU Frequency | 16 MHz |
| Flash Memory | 64 KB |
| Integrated EEPROM | 4 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| ADC Resolution | 12 bits |
| I/O Port Count | 54 |
| Lifecycle Status | Active |
主要差異化特點
- Substantial GPIO capacity in a compact 10 mm by 10 mm LQFP (對比STM8L152K6U6)
- Integrated nonvolatile data memory (對比STM32L051K8T6)
- Higher Flash capacity in the STM8L EnergyLite family (對比STM8L152K6U6)
- Dedicated 12-bit conversion resource (對比STM32L051K8T6)
設計說明
Place the device-specific input and output decoupling capacitors immediately adjacent to their corresponding power pins, and keep the return path to the ground plane continuous. Because the STM8L151R8T3 supports analog measurement, route sensitive ADC inputs away from clocks, switching-node connections, and high-current return paths. Use the manufacturer LQFP land pattern and maintain consistent solder-paste deposition across all 64 fine-pitch leads to reduce assembly defects.
Design the 1.8 V to 3.6 V supply so it remains within the limits of every operating mode, including startup and maximum CPU frequency. Check analog and digital supply requirements in the manufacturer electrical tables before assuming that one regulator can serve all pins. For low-power operation, use the energy-saving modes and peripherals supported by the STM8L architecture, then measure average current across sleep, wake, conversion, and communications intervals to establish a realistic battery budget.
Assign analog, digital, reset, clock, and programming functions from the official STM8L151R8 pin table rather than from a generic 64-pin LQFP drawing. Keep the 12-bit ADC input traces short, isolate them from switching signals, and use a quiet reference and ground arrangement when measuring small signals. The 54 available I/O ports simplify pin allocation, but a successful layout still requires deliberate grouping of sensitive analog channels and power-distribution pins.
Do not treat the STM8L151R8T3 and similarly packaged STM8L devices as interchangeable solely because their bodies share the same dimensions. Verify pin numbers, analog functions, reset behavior, clock sources, programming interfaces, and peripheral mapping for every proposed substitution. Likewise, do not infer automotive qualification or an extended temperature range from the STM8L family name; select the exact ordering code whose grade matches the deployment environment.
合規資訊
The manufacturer product and distributor records identify the device as active but do not state the requested environmental, automotive, or material-compliance classifications. No assumption was made about these requirements.
