STM32L151VCT6A - 256KB Flash 32MHz Cortex-M3 MCU | STMicroelectronics
MPN: STM32L151VCT6A ✓ Hoạt độngSTM32L151VCT6A Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho STM32L151VCT6A — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với STM32L151VCT6A (cùng hình factor và footprint) — khác nhau ở DAC, ADC, Core Architecture, Flash Memory, SRAM.
STM32L151VCT6
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32L152VCT6A
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L151VCH6A
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
STM32L151VCT6TR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
GD32F303VCT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
APM32F103VCT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L151VCT6A Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M3 32-bit |
| CPU Frequency | 32 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| EEPROM | 4 KB (true EEPROM) |
| Hộp | 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 |
| Nhiệt độ hoạt động | -40C to +85C (industrial grade) |
| Low-Power Stop Mode Current | 1.4 uA typical (RTC retained) |
| Active Mode Current | 9 uA/MHz typical |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
Cấu hình chân STM32L151VCT6A
| Chân 1 | PE2 — GPIO PE2 / TRACECLK |
| Chân 2 | PE3 — GPIO PE3 / TRACEDATA0 |
| Chân 3 | PE4 — GPIO PE4 / TRACEDATA1 |
| Chân 4 | PE5 — GPIO PE5 / TRACEDATA2 |
| Chân 5 | PE6 — GPIO PE6 / TRACEDATA3 |
| Chân 6 | VBAT — RTC backup battery supply |
| Chân 7 | PC13 — GPIO PC13 / RTC_TAMP |
| Chân 8 | PC14 — GPIO PC14 / OSC32_IN |
| Chân 9 | PC15 — GPIO PC15 / OSC32_OUT |
| Chân 10 | VSS — Ground |
| Chân 11 | VDD — Digital supply voltage |
| Chân 12 | PH0 — GPIO PH0 / OSC_IN |
| Chân 13 | PH1 — GPIO PH1 / OSC_OUT |
| Chân 14 | NRST — Reset (active low) |
| Chân 15 | PC0 — GPIO PC0 / ADC_IN10 |
| Chân 16 | PC1 — GPIO PC1 / ADC_IN11 |
| Chân 17 | PC2 — GPIO PC2 / ADC_IN12 |
| Chân 18 | PC3 — GPIO PC3 / ADC_IN13 |
| Chân 19 | VSSA — Analog ground |
| Chân 20 | VDDA — Analog supply voltage |
| Chân 21 | PA0 — GPIO PA0 / WKUP1 / ADC_IN0 |
| Chân 22 | PA1 — GPIO PA1 / ADC_IN1 |
| Chân 23 | PA2 — GPIO PA2 / USART2_TX |
| Chân 24 | PA3 — GPIO PA3 / USART2_RX |
| Chân 25 | PA4 — GPIO PA4 / SPI1_NSS |
| Chân 26 | PA5 — GPIO PA5 / SPI1_SCK |
| Chân 27 | PA6 — GPIO PA6 / SPI1_MISO |
| Chân 28 | PA7 — GPIO PA7 / SPI1_MOSI |
| Chân 29 | PC4 — GPIO PC4 / ADC_IN14 |
| Chân 30 | PC5 — GPIO PC5 / ADC_IN15 |
| Chân 31 | PB0 — GPIO PB0 / ADC_IN8 |
| Chân 32 | PB1 — GPIO PB1 / ADC_IN9 |
| Chân 33 | PB2 — GPIO PB2 / BOOT1 |
| Chân 34 | PE7 — GPIO PE7 |
| Chân 35 | PE8 — GPIO PE8 |
| Chân 36 | PE9 — GPIO PE9 |
| Chân 37 | PE10 — GPIO PE10 |
| Chân 38 | PE11 — GPIO PE11 |
| Chân 39 | PE12 — GPIO PE12 |
| Chân 40 | PE13 — GPIO PE13 |
| Chân 41 | PE14 — GPIO PE14 |
| Chân 42 | PE15 — GPIO PE15 |
| Chân 43 | PB10 — GPIO PB10 / I2C2_SCL |
| Chân 44 | PB11 — GPIO PB11 / I2C2_SDA |
| Chân 45 | VSS — Ground |
| Chân 46 | VDD — Digital supply voltage |
| Chân 47 | PB12 — GPIO PB12 / SPI2_NSS |
| Chân 48 | PB13 — GPIO PB13 / SPI2_SCK |
| Chân 49 | PB14 — GPIO PB14 / SPI2_MISO |
| Chân 50 | PB15 — GPIO PB15 / SPI2_MOSI |
| Chân 51 | PD8 — GPIO PD8 |
| Chân 52 | PD9 — GPIO PD9 |
| Chân 53 | PD10 — GPIO PD10 |
| Chân 54 | PD11 — GPIO PD11 |
| Chân 55 | PD12 — GPIO PD12 |
| Chân 56 | PD13 — GPIO PD13 |
| Chân 57 | VSS — Ground |
| Chân 58 | VDD — Digital supply voltage |
| Chân 59 | PD14 — GPIO PD14 |
| Chân 60 | PD15 — GPIO PD15 |
| Chân 61 | PC6 — GPIO PC6 |
| Chân 62 | PC7 — GPIO PC7 |
| Chân 63 | PC8 — GPIO PC8 |
| Chân 64 | PC9 — GPIO PC9 |
| Chân 65 | PA8 — GPIO PA8 / USART1_CK |
| Chân 66 | PA9 — GPIO PA9 / USART1_TX |
| Chân 67 | PA10 — GPIO PA10 / USART1_RX |
| Chân 68 | PA11 — GPIO PA11 / USB_DM |
| Chân 69 | PA12 — GPIO PA12 / USB_DP |
| Chân 70 | PA13 — GPIO PA13 / SWDIO |
| Chân 71 | VSS — Ground |
| Chân 72 | VDD — Digital supply voltage |
| Chân 73 | PA14 — GPIO PA14 / SWCLK |
| Chân 74 | PA15 — GPIO PA15 / JTDI |
| Chân 75 | PC10 — GPIO PC10 / UART4_TX |
| Chân 76 | PC11 — GPIO PC11 / UART4_RX |
| Chân 77 | PC12 — GPIO PC12 / UART5_TX |
| Chân 78 | PD0 — GPIO PD0 |
| Chân 79 | PD1 — GPIO PD1 |
| Chân 80 | PD2 — GPIO PD2 / UART5_RX |
| Chân 81 | PD3 — GPIO PD3 |
| Chân 82 | PD4 — GPIO PD4 |
| Chân 83 | PD5 — GPIO PD5 |
| Chân 84 | PD6 — GPIO PD6 |
| Chân 85 | PD7 — GPIO PD7 |
| Chân 86 | PB3 — GPIO PB3 / JTDO |
| Chân 87 | PB4 — GPIO PB4 / NJTRST |
| Chân 88 | PB5 — GPIO PB5 |
| Chân 89 | PB6 — GPIO PB6 / I2C1_SCL |
| Chân 90 | PB7 — GPIO PB7 / I2C1_SDA |
| Chân 91 | BOOT0 — Boot mode selection |
| Chân 92 | PB8 — GPIO PB8 / TIM4_CH3 |
| Chân 93 | PB9 — GPIO PB9 / TIM4_CH4 |
| Chân 94 | PE0 — GPIO PE0 / TIM4_ETR |
| Chân 95 | PE1 — GPIO PE1 |
| Chân 96 | VSS — Ground |
| Chân 97 | VDD — Digital supply voltage |
| Chân 98 | PE2 — GPIO PE2 / TRACECLK |
| Chân 99 | PE3 — GPIO PE3 / TRACEDATA0 |
| Chân 100 | VREF+ — ADC reference voltage |
Ứng dụng tiêu biểu
STM32L151VCT6A phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STM32L151VCT6A — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Lowest Stop-mode current in 100-LQFP Cortex-M3 class (vsGD32F303VCT6)
- Integrated 4 KB true EEPROM (vsSTM32F100VCT6B)
- Optional integrated LCD segment controller (vsSTM32L152VCT6A)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
