STM32L151VCT6A - 256KB Flash 32MHz Cortex-M3 MCU | STMicroelectronics
MPN： STM32L151VCT6A ✓ 啟用中STM32L151VCT6A 概覽
A microcontroller (MCU) is a single-chip computer integrating a CPU core, volatile memory (SRAM), non-volatile memory (Flash), and programmable peripherals into one package. The STM32L1 series specifically occupies the 'ultra-low-power' tier of the MCU taxonomy - sitting between general-purpose Cortex-M0/M3 microcontrollers and dedicated signal-processing MCUs - and is hierarchically classified as: microcontroller -> embedded processor -> semiconductor. The L1 family uses ST's proprietary ultra-low-leakage process and an innovative autonomous dynamic voltage scaling (DVS) topology.
Key features include 4KB of true EEPROM (a rare find on Cortex-M MCUs), 12-bit ADC, 12-bit DAC, multiple low-power modes (Standby, Stop, Sleep) drawing as little as 1.4 uA in Stop mode with RTC retention, and a built-in USB 2.0 Full-Speed controller with on-chip transceiver. The 100-LQFP package exposes up to 83 GPIO across multiple 5V-tolerant ports, plus USART, SPI, I2C, USB, CAN, and timers.
The Cortex-M3 core delivers 1.25 DMIPS/MHz (Dhrystone MIPS) while supporting Thumb-2 instructions for code density. The integrated voltage regulator dynamically scales the internal core voltage based on clock frequency, enabling the dynamic voltage scaling that defines the L1 family. Five low-power modes - Sleep, Low-Power Sleep, Stop with RTC, Standby, and Standby with RTC - allow energy budgets as low as 9 uA/MHz active and 1.4 uA Stop.
Typical applications include wearable fitness bands, portable medical sensors, wireless sensor nodes, smart meters, industrial remote controls, and battery-backed IoT devices. The 256KB Flash is sufficient for RTOS-based designs using FreeRTOS or for BLE/ZigBee stacks when paired with a network co-processor. The integrated 4KB EEPROM eliminates the need for external EEPROM in many designs, simplifying BOM and lowering cost.
When designing with the STM32L151VCT6A, choose the LQFP-100 footprint for hand-rework-friendly prototypes and migration to other L1 family parts. Verify your Stop-mode current budget against the 1.4 uA typical figure (it rises to several uA with RTC enabled). For 1.8V-3.6V supply, internal voltage regulation is automatic; at lower voltages the integrated POR/PDR handles brownout reset.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in alternatives within the same LQFP-100 package, and practical design notes not found in the manufacturer datasheet - giving engineers a faster path from part selection to prototype.
直接替換替代品，適用於 STM32L151VCT6A — 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： STM32L151VCT6A （相同外形與佔位） — 差異在於 DAC, ADC, Core Architecture, Flash Memory, SRAM.
STM32L151VCT6
✅ 直接替換聯絡詢價
查看資料表 →STM32L152VCT6A
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L151VCH6A
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L151VCT6TR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
GD32F303VCT6
✅ 直接替換📋 參考替代品（不在目錄中）
APM32F103VCT6
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L151VCT6A 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M3 32-bit |
| CPU Frequency | 32 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| EEPROM | 4 KB (true EEPROM) |
| 封裝 | 100-pin LQFP (14x14 mm) |
| Operating Voltage | 1.8 V to 3.6 V |
| GPIO Count | Up to 83 (5V-tolerant) |
| ADC | 1x 12-bit, up to 24 channels |
| DAC | 1x 12-bit |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| 工作溫度 | -40C to +85C (industrial grade) |
| Low-Power Stop Mode Current | 1.4 uA typical (RTC retained) |
| Active Mode Current | 9 uA/MHz typical |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
STM32L151VCT6A 腳位配置
| 腳位 1 | PE2 — GPIO PE2 / TRACECLK |
| 腳位 2 | PE3 — GPIO PE3 / TRACEDATA0 |
| 腳位 3 | PE4 — GPIO PE4 / TRACEDATA1 |
| 腳位 4 | PE5 — GPIO PE5 / TRACEDATA2 |
| 腳位 5 | PE6 — GPIO PE6 / TRACEDATA3 |
| 腳位 6 | VBAT — RTC backup battery supply |
| 腳位 7 | PC13 — GPIO PC13 / RTC_TAMP |
| 腳位 8 | PC14 — GPIO PC14 / OSC32_IN |
| 腳位 9 | PC15 — GPIO PC15 / OSC32_OUT |
| 腳位 10 | VSS — Ground |
| 腳位 11 | VDD — Digital supply voltage |
| 腳位 12 | PH0 — GPIO PH0 / OSC_IN |
| 腳位 13 | PH1 — GPIO PH1 / OSC_OUT |
| 腳位 14 | NRST — Reset (active low) |
| 腳位 15 | PC0 — GPIO PC0 / ADC_IN10 |
| 腳位 16 | PC1 — GPIO PC1 / ADC_IN11 |
| 腳位 17 | PC2 — GPIO PC2 / ADC_IN12 |
| 腳位 18 | PC3 — GPIO PC3 / ADC_IN13 |
| 腳位 19 | VSSA — Analog ground |
| 腳位 20 | VDDA — Analog supply voltage |
| 腳位 21 | PA0 — GPIO PA0 / WKUP1 / ADC_IN0 |
| 腳位 22 | PA1 — GPIO PA1 / ADC_IN1 |
| 腳位 23 | PA2 — GPIO PA2 / USART2_TX |
| 腳位 24 | PA3 — GPIO PA3 / USART2_RX |
| 腳位 25 | PA4 — GPIO PA4 / SPI1_NSS |
| 腳位 26 | PA5 — GPIO PA5 / SPI1_SCK |
| 腳位 27 | PA6 — GPIO PA6 / SPI1_MISO |
| 腳位 28 | PA7 — GPIO PA7 / SPI1_MOSI |
| 腳位 29 | PC4 — GPIO PC4 / ADC_IN14 |
| 腳位 30 | PC5 — GPIO PC5 / ADC_IN15 |
| 腳位 31 | PB0 — GPIO PB0 / ADC_IN8 |
| 腳位 32 | PB1 — GPIO PB1 / ADC_IN9 |
| 腳位 33 | PB2 — GPIO PB2 / BOOT1 |
| 腳位 34 | PE7 — GPIO PE7 |
| 腳位 35 | PE8 — GPIO PE8 |
| 腳位 36 | PE9 — GPIO PE9 |
| 腳位 37 | PE10 — GPIO PE10 |
| 腳位 38 | PE11 — GPIO PE11 |
| 腳位 39 | PE12 — GPIO PE12 |
| 腳位 40 | PE13 — GPIO PE13 |
| 腳位 41 | PE14 — GPIO PE14 |
| 腳位 42 | PE15 — GPIO PE15 |
| 腳位 43 | PB10 — GPIO PB10 / I2C2_SCL |
| 腳位 44 | PB11 — GPIO PB11 / I2C2_SDA |
| 腳位 45 | VSS — Ground |
| 腳位 46 | VDD — Digital supply voltage |
| 腳位 47 | PB12 — GPIO PB12 / SPI2_NSS |
| 腳位 48 | PB13 — GPIO PB13 / SPI2_SCK |
| 腳位 49 | PB14 — GPIO PB14 / SPI2_MISO |
| 腳位 50 | PB15 — GPIO PB15 / SPI2_MOSI |
| 腳位 51 | PD8 — GPIO PD8 |
| 腳位 52 | PD9 — GPIO PD9 |
| 腳位 53 | PD10 — GPIO PD10 |
| 腳位 54 | PD11 — GPIO PD11 |
| 腳位 55 | PD12 — GPIO PD12 |
| 腳位 56 | PD13 — GPIO PD13 |
| 腳位 57 | VSS — Ground |
| 腳位 58 | VDD — Digital supply voltage |
| 腳位 59 | PD14 — GPIO PD14 |
| 腳位 60 | PD15 — GPIO PD15 |
| 腳位 61 | PC6 — GPIO PC6 |
| 腳位 62 | PC7 — GPIO PC7 |
| 腳位 63 | PC8 — GPIO PC8 |
| 腳位 64 | PC9 — GPIO PC9 |
| 腳位 65 | PA8 — GPIO PA8 / USART1_CK |
| 腳位 66 | PA9 — GPIO PA9 / USART1_TX |
| 腳位 67 | PA10 — GPIO PA10 / USART1_RX |
| 腳位 68 | PA11 — GPIO PA11 / USB_DM |
| 腳位 69 | PA12 — GPIO PA12 / USB_DP |
| 腳位 70 | PA13 — GPIO PA13 / SWDIO |
| 腳位 71 | VSS — Ground |
| 腳位 72 | VDD — Digital supply voltage |
| 腳位 73 | PA14 — GPIO PA14 / SWCLK |
| 腳位 74 | PA15 — GPIO PA15 / JTDI |
| 腳位 75 | PC10 — GPIO PC10 / UART4_TX |
| 腳位 76 | PC11 — GPIO PC11 / UART4_RX |
| 腳位 77 | PC12 — GPIO PC12 / UART5_TX |
| 腳位 78 | PD0 — GPIO PD0 |
| 腳位 79 | PD1 — GPIO PD1 |
| 腳位 80 | PD2 — GPIO PD2 / UART5_RX |
| 腳位 81 | PD3 — GPIO PD3 |
| 腳位 82 | PD4 — GPIO PD4 |
| 腳位 83 | PD5 — GPIO PD5 |
| 腳位 84 | PD6 — GPIO PD6 |
| 腳位 85 | PD7 — GPIO PD7 |
| 腳位 86 | PB3 — GPIO PB3 / JTDO |
| 腳位 87 | PB4 — GPIO PB4 / NJTRST |
| 腳位 88 | PB5 — GPIO PB5 |
| 腳位 89 | PB6 — GPIO PB6 / I2C1_SCL |
| 腳位 90 | PB7 — GPIO PB7 / I2C1_SDA |
| 腳位 91 | BOOT0 — Boot mode selection |
| 腳位 92 | PB8 — GPIO PB8 / TIM4_CH3 |
| 腳位 93 | PB9 — GPIO PB9 / TIM4_CH4 |
| 腳位 94 | PE0 — GPIO PE0 / TIM4_ETR |
| 腳位 95 | PE1 — GPIO PE1 |
| 腳位 96 | VSS — Ground |
| 腳位 97 | VDD — Digital supply voltage |
| 腳位 98 | PE2 — GPIO PE2 / TRACECLK |
| 腳位 99 | PE3 — GPIO PE3 / TRACEDATA0 |
| 腳位 100 | VREF+ — ADC reference voltage |
典型應用
STM32L151VCT6A 適用於 7 應用s: Wearable Fitness Band, Battery-Powered IoT Sensor Node, Smart Electricity Meter, Portable Medical Sensor, Industrial Remote Control / HMI, USB-Powered Embedded Device, Energy Harvesting Wireless Switch.
Wearable Fitness Band
The STM32L151VCT6A's 1.4 uA Stop-mode current and 9 uA/MHz active current make it ideal for wearable fitness bands powered by a small lithium-polymer cell. With 256 KB Flash and 32 KB SRAM it easily hosts FreeRTOS plus a BLE host stack when paired with an external network co-processor such as the BlueNRG-2. The integrated 12-bit ADC drives optical heart-rate sensor photodiode amplification directly, while the 5V-tolerant GPIOs interface to a segment LCD or OLED display. Designers favor this MCU over standard Cortex-M0 parts because the dynamic voltage scaling and five low-power modes deliver days-to-weeks longer battery life per charge.
推薦
Battery-Powered IoT Sensor Node
For wireless sensor nodes (temperature, humidity, air-quality) running on 2x AA batteries or energy harvesting, the STM32L151VCT6A offers the lowest quiescent current budget in its class. The 1.8-3.6 V supply range matches direct connection to alkaline or lithium cells without boost conversion. The Cortex-M3 at 32 MHz runs sensor fusion and LoRaWAN/Sigfox stacks at modest MIPS, while Stop mode with RTC retains time of day for 5+ years on a single primary cell. The 4 KB true EEPROM provides non-volatile parameter storage (calibration data, network keys) without external parts, simplifying BOM in cost-sensitive IoT deployments.
推薦
Smart Electricity Meter
Smart meters require metering-accurate ADCs, real-time clock retention across power events, and years-long battery backup for the disconnect switch. The STM32L151VCT6A delivers 12-bit ADC accuracy on current/voltage sense channels and 4 KB true EEPROM for tariff/calibration storage. The LQFP-100 package exposes enough GPIO for metering front-end, optical port (IEC 62056-21), and PLC or wireless M-Bus link. The L152 variant is preferred where the meter has a mechanical segment-LCD display. Compared to the older STM32F1 series, the L1 family's Stop-mode current reduces idle draw in standby mode by 10x.
推薦
Portable Medical Sensor
Portable medical devices such as pulse oximeters, glucometers, and wearable ECG patches demand low noise floor, ultra-low standby current, and IEC 60601-1-compatible ESD robustness. The STM32L151VCT6A's integrated 12-bit ADC and 12-bit DAC handle analog front-end conditioning without external op-amps, and the 5V-tolerant GPIOs simplify interface to legacy medical sensors. The Cortex-M3 core supports lightweight DSP for heart-rate variability calculation. Battery life of 30+ days is achievable on a single CR2032 coin cell using Stop mode between measurements, making this MCU a strong fit for disposable and semi-disposable medical products.
推薦
Industrial Remote Control / HMI
Battery-powered industrial remote controls for cranes, forklifts, and process equipment need long battery life, robust ESD tolerance, and wireless connectivity. The STM32L151VCT6A's 32 KB SRAM and 256 KB Flash accommodate sub-GHz or Bluetooth proprietary stacks alongside user-interface code. The 100-LQFP exposes 83 GPIOs for keypad matrix, joystick, and OLED display interfacing. Designers prefer the L1 family over F1/F4 parts because Stop-mode retention and fast wakeup (typically 8 us) extend battery life while preserving real-time response for safety-critical stop commands.
推薦
USB-Powered Embedded Device
The STM32L151VCT6A integrates a USB 2.0 Full-Speed controller with on-chip PHY, eliminating the need for an external USB transceiver chip. This makes it an excellent choice for USB-powered embedded devices such as data loggers, HID peripherals, and CDC virtual COM port devices. The 256 KB Flash comfortably holds USB device class firmware plus application logic. While the L1 family is optimized for low-power, the integrated USB and 5V-tolerant GPIO simplify designs that need both battery backup and USB connectivity for charging or data exchange.
推薦
Energy Harvesting Wireless Switch
Self-powered wireless light switches and IoT buttons use kinetic or solar energy harvesting and need to operate from a few hundred microjoules per actuation. The STM32L151VCT6A's 1.4 uA Stop-mode current and 8 us wakeup time allow the MCU to spend >99% of its time in sleep between events, then wake, transmit a packet via a companion radio, and return to Stop. The 256 KB Flash is sufficient for proprietary or BLE beacon stacks, and 5V-tolerant GPIOs simplify interface to mechanical switches. This application showcases the L1 family's advantage over general-purpose Cortex-M0 MCUs.
推薦
推薦產品摘要
工程參考資料，適用於 STM32L151VCT6A — 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 | STM32L151VCT6 | STM32L152VCT6A | STM32L151VCH6A | STM32L151VCT6TR | GD32F303VCT6 | APM32F103VCT6 |
|---|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice | Geehy |
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same |
| Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M4 | ARM Cortex-M3 |
| CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 120 MHz | 96 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 384 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 48 KB | 32 KB | 48 KB | 64 KB |
| Stop-Mode Current | 1.4 uA typical | 1.4 uA typical | 1.4 uA typical | 1.4 uA typical | 1.4 uA typical | ~50 uA | ~50 uA |
| USB | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY | USB 2.0 FS with PHY |
| LCD Controller | No | No | Yes (8x40 segments) | No | No | No | No |
主要差異化特點
- Lowest Stop-mode current in 100-LQFP Cortex-M3 class (對比GD32F303VCT6)
- Integrated 4 KB true EEPROM (對比STM32F100VCT6B)
- Optional integrated LCD segment controller (對比STM32L152VCT6A)
設計說明
The STM32L151VCT6A's 1.4 uA Stop-mode current is achieved only when the LSE oscillator and selected peripherals are properly gated. Estimated: at 3.0 V supply with RTC running, typical Stop current is 1.4-2.5 uA. Enable internal voltage regulator in low-power regulator mode and disable all unused peripherals via the RCC registers before entering Stop. The integrated 4 KB true EEPROM operates at 1.8-3.6 V but draws ~3 mA during a write - avoid writing EEPROM while in low-power modes.
Decouple all VDD/VSS pin pairs with 100 nF X5R ceramic capacitors placed within 5 mm of each pin pair. The VDDA pin should have its own 100 nF + 1 uF RC filter to isolate analog noise from the digital core. The LQFP-100 thermal pad (if present on the variant) should be soldered to a 4-6 mm^2 copper pour for thermal dissipation, though at 9 uA/MHz active and 1.4 uA Stop the MCU rarely requires thermal management.
Do not exceed 3.6 V on any GPIO, even though they are 5V-tolerant for input-only operation - the 5V tolerance applies to digital input pins only, not to ADC inputs. The VBAT pin should be tied to VDD when no RTC backup battery is used; leaving it floating causes undefined supply rail behavior. When migrating from STM32F1, note that the L1 series uses different bit-band alias addresses in some peripheral registers - re-verify all CMSIS headers before porting HAL code.
合規資訊
RoHS and REACH compliant per ST product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - for automotive applications consider STM32L151VCT6A-Q variant.
