STM8L151C6U3 - 16MHz 32KB MCU | STMicroelectronics
MPN： STM8L151C6U3 ✓ 啟用中STM8L151C6U3 概覽
An ultra-low-power microcontroller is an embedded processing platform optimized to minimize energy consumption during active operation, sleep, and standby states. The STM8L family belongs to the hierarchy of 8-bit microcontroller, embedded controller, semiconductor, and power-conscious IoT hardware. Its low-power architecture is useful for battery-operated sensors, portable instruments, industrial monitors, and connected devices that spend substantial time waiting for an event or waking a peripheral.
The STM8L151C6U3 combines 32 KB of Flash with 2 KB of SRAM and a maximum 16 MHz operating frequency. The device includes 41 I/O pins, an RTC, timers, 1 KB of data EEPROM, and communication interfaces identified in the product documentation, including I2C, SPI, and UART. Its 1.8 V to 3.6 V operating range supports both 2 V and 3.3 V system rails while providing flexibility for low-voltage sensing and portable equipment.
The medium-density STM8L151x4/6 and STM8L152x4/6 architecture places a common peripheral set across the STM8L platform. This modular organization supports design reuse when moving between related devices, although firmware, memory capacity, package outlines, and peripheral availability must still be checked for every planned substitution. The 48-pin UFQFPN footprint is intended for compact surface-mount assemblies rather than through-hole prototyping.
Typical applications include low-power sensor nodes, compact industrial data loggers, battery-powered measurement instruments, access-control terminals, and embedded communication modules. I2C and SPI suit sensors and external transceivers, UART supports point-to-point host links, and the RTC provides timekeeping for systems that must retain timestamps during low-activity periods.
Design around the complete pin assignment in the manufacturer datasheet rather than relying on generic UFQFPN conventions. Confirm exposed-pad connection, supply decoupling, programming access, reset behavior, and every peripheral signal before layout release. The exact UFQFPN-48 drawing is outside the supported package-diagram library, so the page uses a neutral package visual and the pin table remains null.
This page consolidates the verified manufacturer and distributor product information with lifecycle status, interface coverage, application guidance, and same-family drop-in comparisons. It also separates documented facts from attributes that require a final review against the exact ordering code and firmware revision.
直接替換替代品，適用於 STM8L151C6U3 — 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： STM8L151C6U3 （相同外形與佔位） — 差異在於 Package, Timers, ADC, DAC, RTC.
STM8L151C6U6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L152C6U3
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L152C6U6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L151C8U6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L152C8U6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L151C6U3 最大額定值與電氣特性
| Product Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L |
| 最大時脈頻率 | 16 MHz |
| Flash Memory | 32 KB |
| Flash Organization | 32K x 8 bits |
| SRAM | 2 KB |
| Data EEPROM | 1 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Count | 41 pins |
| 封裝 | 48-pin UFQFPN, 7 x 7 mm |
| Architecture | 8-bit |
| I2C Interface | Supported |
| SPI Interface | Supported |
| UART Interface | Supported |
| Real-Time Clock | Supported |
| LCD Support | Supported |
| Timers | Supported; details specified in the manufacturer datasheet |
| 安裝類型 | Surface mount |
| 生命週期狀態 | Active |
STM8L151C6U3 48-pin ufqfpn, 7 x 7 mm 腳位配置指南
STM8L151C6U3（48-pin ufqfpn, 7 x 7 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： STM8L151C6U3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L151C6U3 適用於 6 應用s: Battery-Powered Sensor Nodes, Industrial Data Loggers, Battery-Powered Measurement Instruments, Access-Control Terminals, Compact Communication Modules, Low-Power IoT Control Boards.
Battery-Powered Sensor Nodes
The STM8L151C6U3 fits battery-powered sensor nodes because its ultra-low-power STM8L architecture supports operation from 1.8 V to 3.6 V, while 41 I/O pins leave ample connections for sensors and discrete inputs. The 16 MHz processor can handle event filtering, local control, and communication without requiring a higher-power processor. I2C and SPI suit common digital sensors, and the RTC supports timestamped measurements. Actual battery life depends on duty cycle, sensor consumption, regulator efficiency, and the selected low-power mode, so the complete power budget should be measured on the assembled board.
推薦
Industrial Data Loggers
The STM8L151C6U3 is appropriate for compact industrial data loggers that must monitor external sensors and retain measurements over long operating intervals. Its 32 KB Flash supports embedded firmware, 2 KB of SRAM supports working data, and 1 KB of EEPROM provides nonvolatile parameter storage. I2C and SPI can connect digital sensors or memory, while UART can move data to a host or communications module. The 48-pin UFQFPN keeps the controller compact, but industrial qualification requirements and the final operating-temperature grade should be checked for deployment conditions.
推薦
Battery-Powered Measurement Instruments
The STM8L151C6U3 can serve as the control platform in portable measurement instruments where a low-power 8-bit MCU is sufficient for sensor excitation, signal conditioning supervision, calibration storage, and display communication. Its 16 MHz clock supports responsive control, while the 1.8 V minimum supply permits integration with low-voltage analog and sensor circuits. The RTC provides a time base for logged samples. Layout engineers should isolate sensitive analog paths from digital switching and verify regulator behavior across the complete 1.8 V to 3.6 V input range.
推薦
Access-Control Terminals
The STM8L151C6U3 fits access-control terminals that coordinate credential readers, status indicators, alarm outputs, and a host interface. Its 41 I/O pins provide substantial parallel I/O capacity, while I2C and SPI support expansion for secure peripherals or storage, and UART offers a straightforward connection to a reader or network module. The ultra-low-power STM8L family is useful in systems that spend most of their time idle. Firmware must confirm wake behavior, debounce timing, fail-safe outputs, and peripheral pin reassignment when replacing an existing controller.
推薦
Compact Communication Modules
The STM8L151C6U3 can act as the low-power supervisory controller in a compact communications module. It can manage a serial transceiver, provide configuration storage in EEPROM, timestamp events through the RTC, and expose status information over UART. I2C and SPI offer additional paths to radio, network, or sensor components. The 48-pin UFQFPN package is useful when board area is restricted, and the 1.8 V to 3.6 V range supports compact power systems. Radio-frequency layout, grounding, and supply separation remain separate PCB-design responsibilities.
推薦
Low-Power IoT Control Boards
The STM8L151C6U3 is a strong fit for low-power IoT control boards that combine sensing, local logic, and intermittent connectivity. The 8-bit architecture minimizes resource demand, while 32 KB of Flash and 2 KB of SRAM handle control firmware and active working data. The RTC can synchronize events, and I2C, SPI, and UART cover common expansion paths. For a wireless node, engineers should select operating modes based on measured current rather than nominal ratings, validate wake timing, and keep radio supply and antenna layout separate from sensitive analog sections.
推薦
工程參考資料，適用於 STM8L151C6U3 — 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 | STM8L151C6U6 | STM8L152C6U3 | STM8L152C6U6 | STM8L151C8U6 | STM8L152C8U6 |
|---|---|---|---|---|---|---|
| Package | 48-pin UFQFPN (7 x 7 mm) | 48-pin UFQFPN (7 x 7 mm) | 48-pin UFQFPN (7 x 7 mm) | 48-pin UFQFPN (7 x 7 mm) | 48-pin UFQFPN (7 x 7 mm) | 48-pin UFQFPN (7 x 7 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Family | STM8L151 | STM8L151 | STM8L152 | STM8L152 | STM8L151 | STM8L152 |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB |
| Communication Interfaces | I2C, SPI, UART | I2C, SPI, UART | I2C, SPI, UART; additional STM8L152 functions | I2C, SPI, UART; additional STM8L152 functions | I2C, SPI, UART | I2C, SPI, UART; additional STM8L152 functions |
主要差異化特點
- Exact 32 KB Flash configuration for the original design (對比STM8L151C8U6)
- Lower Flash requirement for firmware-compatible STM8L151 designs (對比STM8L151C8U6)
- Retains the STM8L151 peripheral architecture (對比STM8L152C6U3)
- Common 48-pin UFQFPN mechanical format (對比STM8L152C6U6)
設計說明
Use the STMicroelectronics UFQFPN-48 land pattern and exposed-pad instructions from the manufacturer package drawing rather than a generic 48-pin QFN footprint. Confirm whether the exposed pad is connected to VSS, and route it with a low-impedance thermal and return-plane connection. Place decoupling capacitors close to each selected supply pin, keep the programmer and debug interface accessible, and preserve the manufacturer’s recommended layout around sensitive analog and high-speed communication signals.
Design the supply for the full 1.8 V to 3.6 V operating range and evaluate controller and I/O current separately in each operating mode. Estimated: if the controller averages 5 mA at 3.3 V, the controller power is 16.5 mW; this excludes sensor, interface, and regulator losses. Validate startup behavior at the minimum rail voltage because low-voltage operation can change brownout margin, flash write timing, and I/O logic-level compatibility.
Do not treat an STM8L152 or higher-density STM8L151 ordering code as an automatic drop-in replacement. Check alternate-function assignments, power pins, ground pins, reset, programming signals, exposed-pad connections, RTC resources, interrupts, and timer channels against the manufacturer pin tables. After a hardware-compatible substitution, rebuild the project configuration and verify boot, debugger attachment, peripheral initialization, and low-power wake behavior on the assembled board.
Assign I2C and SPI signals based on the actual peripheral instance and package pin in the manufacturer datasheet rather than software labels alone. Keep serial traces short where possible, provide the specified pull-ups for I2C, route clocks away from sensitive analog inputs, and provide a continuous ground reference beneath signal routes. If the design includes radio or high-speed external links, isolate their supply-return paths from precision analog sections and validate crosstalk with an assembled-board test.
合規資訊
The manufacturer product documentation identifies the STM8L151C6 family as active. Specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the exact ordering code and manufacturer compliance documentation.