STM8L151C4U6 - 8-bit Ultra-Low Power MCU 16KB Flash | ST
料号： STM8L151C4U6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.48 | $24.80 |
| 100 | $2.15 | $215.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.74 | $1,740.00 |
| 2,500 | $1.55 | $3,875.00 |
STM8L151C4U6 概述
An ultra-low-power MCU is a microcontroller specifically engineered to minimize active, standby, and sleep-mode current draw, allowing battery-powered end products to operate for years on small cells. Within the broader taxonomy, the STM8L151C4U6 belongs to the 8-bit MCU segment, itself a subset of microcontrollers, which in turn belong to integrated circuits in the power-management domain. The STM8L core uses a CISC architecture with a modified Harvard layout and a 16-bit instruction word, delivering strong code density and deterministic interrupt response at low clock rates.
Key electrical characteristics include a maximum HSI clock speed of 16 MHz, an internal voltage regulator supporting 1.8 V to 3.6 V operation, multiple low-power modes (HALT, Active-Halt, Wait, Low-power Run), and integrated reset circuitry. The UFQFPN-48 (7x7) package offers a compact footprint, an exposed thermal pad for improved dissipation, and surface-mount compatibility with standard reflow profiles, while the integrated peripherals substantially reduce external component count and BOM cost.
Application areas include battery-powered IoT sensor nodes, wearable health-monitoring devices, smart meters, remote controls, industrial sensor transmitters, and consumer electronics where energy budget is critical. The 16-bit tim encoder interfaces, USART, SPI, and I2C make it well-suited for both sensor front ends and short-range wireless MCU companions.
Designers should leverage the STM8 peripheral library and STVP / ST Visual Develop or IAR / Cosmic toolchains, ensure the exposed pad is soldered for thermal and electrical ground reference, and follow ST AN3149 application-note recommendations for the STM8L low-power modes to achieve the published 0.9 µA HALT current and 4.4 µA Low-power Run numbers.
This page synthesizes distributor stock, STM8L-family drop-in alternatives, and practical PCB-layout guidance for ultra-low-power designs that are not aggregated in the manufacturer datasheet alone.
直接替换替代料： STM8L151C4U6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
STM8L151C6U6
✅ 直接替换📋 参考替代料（不在目录中）
STM8L151C8U6
✅ 直接替换📋 参考替代料（不在目录中）
STM8L152C4U6
✅ 直接替换📋 参考替代料（不在目录中）
STM8L151C4U6TR
✅ 直接替换📋 参考替代料（不在目录中）
STM8L151G4U6
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →STM8L151C4U6 最大额定值与电气特性
| Core Architecture | STM8 8-bit CISC (modified Harvard) |
| Program Memory (Flash) | 16 KB |
| Data EEPROM | 1 KB |
| RAM | 2 KB |
| Maximum Clock Speed | 16 MHz (internal HSI) |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Ports | 41 |
| 封装 | 48-pin UFQFPN (7x7 mm) with EP |
| ADC | 12-bit |
| DMA Channels | 4 |
| Communication Interfaces | SPI, I2C, USART |
| Timers | 8-bit and 16-bit timers, RTC |
| 工作温度范围 | -40 C to +85 C |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
STM8L151C4U6 48-pin ufqfpn (7x7 mm) with ep 引脚配置指南
STM8L151C4U6（48-pin ufqfpn (7x7 mm) with ep 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： STM8L151C4U6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM8L151C4U6 适用于 6 应用s: Battery-Powered IoT Sensor Node, Wearable Health Monitoring, Smart Metering, Industrial Sensor Transmitter, Remote Control and Consumer Electronics, HVAC Building Automation Sensor.
Battery-Powered IoT Sensor Node
The STM8L151C4U6 fits battery-powered IoT sensor nodes through its integrated 12-bit ADC for direct sensor signal conditioning, four-channel DMA that lets the CPU stay in HALT while data streams, and STM8L-family HALT current around 0.9 µA with RTC running. The 16 KB Flash comfortably fits typical application code for temperature, humidity, or motion-sensor endpoints with wake-up thresholds handled by interrupt-driven logic. Its wide 1.8 V to 3.6 V supply enables direct connection to Li-primary cells (3.6 V) or 2xAA cells (3.0 V).
推荐
Wearable Health Monitoring
Wearable health monitors such as heart-rate straps, fitness bands, and disposable medical sensors benefit from the STM8L151C4U6's ultra-low-power design. The 16 MHz STM8 core runs firmware fast, then drops into Low-power Run (≈4.4 µA) or HALT (≈0.9 µA) when idle. The 41 GPIOs handle touch buttons, ADXL-style accelerometer interrupts, and BLE-module handshake lines without needing a port expander. The 12-bit ADC, paired with DMA, samples photoplethysmography (PPG) or temperature signals at µA-class current consumption.
推荐
Smart Metering
Electricity, water, and gas meters leverage the STM8L151C4U6 for its sub-µA HALT current, integrated RTC for time-stamped metering logs, and 16 KB of Flash to hold protocol stacks for wireless M-Bus, LoRaWAN Node firmware, or simple wired UART metering. The DMA + 12-bit ADC combination samples current / voltage transducers while the CPU sleeps. The 48-UFQFPN with exposed pad provides solid heat dissipation when the part stays active during communication windows.
推荐
Industrial Sensor Transmitter
4 mA to 20 mA loop-powered industrial sensor transmitters and remote I/O modules use the STM8L151C4U6 to maintain low quiescent draw. The wide 1.8 V to 3.6 V supply range, ±2 kV HBM ESD on I/Os, and -40 °C to +85 °C industrial temperature range give reliable operation on factory floors. Communication via USART, SPI, or I2C interfaces seamlessly to HART modems, IO-Link transceivers, or wireless modbus modules, while the ADC + DMA pipeline offloads the CPU entirely.
推荐
Remote Control and Consumer Electronics
Universal remote controls, electronic shelf labels, and e-toothbrush / shaver chargers profit from the STM8L151C4U6's low-power modes and STM8 peripheral library maturity. The 16 MHz 8-bit core is fast enough for IR protocols and capacitive-touch button scanning, while HALT extends coin-cell battery life to multi-year spans. With only 41 active GPIOs available, this part fits mid-complexity consumer designs that need less than 28-pin I/O but more than 32-pin.
推荐
HVAC Building Automation Sensor
HVAC wireless thermostats and occupancy sensors use the STM8L151C4U6 to run Zigbee / BLE beacons and reed-switch arrays while sipping nanoamperes when idle. The integrated 12-bit ADC supports NTC thermistor temperature readings and PIR occupancy amplifiers without an external ADC. The exposed thermal pad on the 7x7 mm UFQFPN-48 package helps during long 1-2 second RF transmission bursts without thermal throttling. With 16 KB Flash the part can store fixed-point protocol stacks and a bootloader.
推荐
推荐产品汇总
工程参考数据： STM8L151C4U6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM8L151C6U6 | STM8L151C8U6 | STM8L152C4U6 | STM8L151C4U6TR | STM8L151G4U6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same | STMicroelectronics - same |
| Package | 48-UFQFPN (7x7) | 48-UFQFPN (7x7) - same | 48-UFQFPN (7x7) - same | 48-UFQFPN (7x7) - same | 48-UFQFPN (7x7) - same | 48-UFQFPN (7x7) - same |
| Flash Memory | 16 KB | 32 KB | 64 KB | 16 KB | 16 KB | 28 KB |
| Data EEPROM | 1 KB | 1 KB | 2 KB | 1 KB | 1 KB | 1 KB |
| Maximum Clock | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| LCD Driver | No | No | No | Yes (4x28) | No | No |
关键差异点
- Ultra-low-power HALT current at 0.9 µA with RTC running for coin-cell designs （对比 Generic 8-bit MCUs in same price band)
- Scalable Flash footprint - same 48-UFQFPN for 16/32/64 KB parts （对比 Pin-compatible STM8L151C6U6 / C8U6 siblings)
- LCD-driver variant (STM8L152C4U6) shares identical 48-UFQFPN footprint （对比 STMicroelectronics STM8L152 series)
设计说明
Estimated: To achieve the published 0.9 µA HALT current and 4.4 µA Low-power Run, disable all unused peripherals in the PCKEN / PCKEN2 registers, switch unused GPIOs to analog input mode, and ensure the IWDG is not enabled. The internal voltage regulator can be bypassed only at 1.8 V typical; at higher VDD always keep the internal regulator enabled. Use the AWU (auto-wakeup) timer or external interrupts for wakeup from HALT. Reference: ST datasheet DM00152123, AN3149 STM8L Ultra-Low-Power Tips.
The 48-UFQFPN has an exposed thermal pad that MUST be soldered to a continuous ground plane for both thermal dissipation and electrical reference. Use a 0.5 mm to 0.65 mm pitch via-array (typically 9 vias in a 3x3 grid) under the EP, and flood the top and inner layers with ground copper. Place the 100 nF decoupling capacitor as close as possible to each VDD pin (this part has multiple VDD/VSS pins per the datasheet pinout table) and connect EP directly to the lowest-impedance ground return.
Do NOT omit the NRST pull-up (10 kΩ to VDD); the reset pin is open-drain. Verify that the SWIM debug header is reachable after PCB layout, since SWIM is single-wire and shared with NRST on some debug probes. The 151 line lacks the integrated LCD driver; use the STM8L152 line if a 4x28-segment LCD is required. Bootloader firmware shipped from ST occupies the upper portion of Flash; the C4 (16 KB) variant has 16 KB total but minus bootloader space, so user code may be slightly less than the full 16 KB.
合规信息
Per ST product page, the STM8L151C4U6 is RoHS-compliant and lead-free. AEC-Q100 is not applicable for this industrial-grade consumer / IoT part; for automotive-grade STM8 use, the STMicroelectronics automotive-grade STM8AF / STM8AL families exist.
