STM32L151VCT6A - 256KB Flash 32MHz Cortex-M3 MCU | STMicroelectronics
N.º da peça: STM32L151VCT6A ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.42 | $8,42 |
| 10 | $7.58 | $75,80 |
| 100 | $6.41 | $641,00 |
| 500 | $5.73 | $2.865,00 |
| 1.000 | $5.12 | $5.120,00 |
STM32L151VCT6A Visão geral
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.
Alternativas drop-in para STM32L151VCT6A — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com STM32L151VCT6A (mesmo formato e footprint) — diferindo em DAC, ADC, Core Architecture, Flash Memory, SRAM.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STM32L151VCT6
✅ Drop-In✓ Em estoque
$4.32 / unidade
Ver ficha técnica →STM32L152VCT6A
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L151VCH6A
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STM32L151VCT6TR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
GD32F303VCT6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
APM32F103VCT6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L151VCT6A Classificações máximas e características elétricas
| Core Architecture | ARM Cortex-M3 32-bit |
| CPU Frequency | 32 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| EEPROM | 4 KB (true EEPROM) |
| Encapsulamento | 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 |
| Temperatura de operação | -40C to +85C (industrial grade) |
| Low-Power Stop Mode Current | 1.4 uA typical (RTC retained) |
| Active Mode Current | 9 uA/MHz typical |
| Tipo de montagem | Surface Mount |
| Nível MSL | 3 (168 hours) |
| Status RoHS | Compliant |
Configuração de pinos do STM32L151VCT6A
| Pino 1 | PE2 — GPIO PE2 / TRACECLK |
| Pino 2 | PE3 — GPIO PE3 / TRACEDATA0 |
| Pino 3 | PE4 — GPIO PE4 / TRACEDATA1 |
| Pino 4 | PE5 — GPIO PE5 / TRACEDATA2 |
| Pino 5 | PE6 — GPIO PE6 / TRACEDATA3 |
| Pino 6 | VBAT — RTC backup battery supply |
| Pino 7 | PC13 — GPIO PC13 / RTC_TAMP |
| Pino 8 | PC14 — GPIO PC14 / OSC32_IN |
| Pino 9 | PC15 — GPIO PC15 / OSC32_OUT |
| Pino 10 | VSS — Ground |
| Pino 11 | VDD — Digital supply voltage |
| Pino 12 | PH0 — GPIO PH0 / OSC_IN |
| Pino 13 | PH1 — GPIO PH1 / OSC_OUT |
| Pino 14 | NRST — Reset (active low) |
| Pino 15 | PC0 — GPIO PC0 / ADC_IN10 |
| Pino 16 | PC1 — GPIO PC1 / ADC_IN11 |
| Pino 17 | PC2 — GPIO PC2 / ADC_IN12 |
| Pino 18 | PC3 — GPIO PC3 / ADC_IN13 |
| Pino 19 | VSSA — Analog ground |
| Pino 20 | VDDA — Analog supply voltage |
| Pino 21 | PA0 — GPIO PA0 / WKUP1 / ADC_IN0 |
| Pino 22 | PA1 — GPIO PA1 / ADC_IN1 |
| Pino 23 | PA2 — GPIO PA2 / USART2_TX |
| Pino 24 | PA3 — GPIO PA3 / USART2_RX |
| Pino 25 | PA4 — GPIO PA4 / SPI1_NSS |
| Pino 26 | PA5 — GPIO PA5 / SPI1_SCK |
| Pino 27 | PA6 — GPIO PA6 / SPI1_MISO |
| Pino 28 | PA7 — GPIO PA7 / SPI1_MOSI |
| Pino 29 | PC4 — GPIO PC4 / ADC_IN14 |
| Pino 30 | PC5 — GPIO PC5 / ADC_IN15 |
| Pino 31 | PB0 — GPIO PB0 / ADC_IN8 |
| Pino 32 | PB1 — GPIO PB1 / ADC_IN9 |
| Pino 33 | PB2 — GPIO PB2 / BOOT1 |
| Pino 34 | PE7 — GPIO PE7 |
| Pino 35 | PE8 — GPIO PE8 |
| Pino 36 | PE9 — GPIO PE9 |
| Pino 37 | PE10 — GPIO PE10 |
| Pino 38 | PE11 — GPIO PE11 |
| Pino 39 | PE12 — GPIO PE12 |
| Pino 40 | PE13 — GPIO PE13 |
| Pino 41 | PE14 — GPIO PE14 |
| Pino 42 | PE15 — GPIO PE15 |
| Pino 43 | PB10 — GPIO PB10 / I2C2_SCL |
| Pino 44 | PB11 — GPIO PB11 / I2C2_SDA |
| Pino 45 | VSS — Ground |
| Pino 46 | VDD — Digital supply voltage |
| Pino 47 | PB12 — GPIO PB12 / SPI2_NSS |
| Pino 48 | PB13 — GPIO PB13 / SPI2_SCK |
| Pino 49 | PB14 — GPIO PB14 / SPI2_MISO |
| Pino 50 | PB15 — GPIO PB15 / SPI2_MOSI |
| Pino 51 | PD8 — GPIO PD8 |
| Pino 52 | PD9 — GPIO PD9 |
| Pino 53 | PD10 — GPIO PD10 |
| Pino 54 | PD11 — GPIO PD11 |
| Pino 55 | PD12 — GPIO PD12 |
| Pino 56 | PD13 — GPIO PD13 |
| Pino 57 | VSS — Ground |
| Pino 58 | VDD — Digital supply voltage |
| Pino 59 | PD14 — GPIO PD14 |
| Pino 60 | PD15 — GPIO PD15 |
| Pino 61 | PC6 — GPIO PC6 |
| Pino 62 | PC7 — GPIO PC7 |
| Pino 63 | PC8 — GPIO PC8 |
| Pino 64 | PC9 — GPIO PC9 |
| Pino 65 | PA8 — GPIO PA8 / USART1_CK |
| Pino 66 | PA9 — GPIO PA9 / USART1_TX |
| Pino 67 | PA10 — GPIO PA10 / USART1_RX |
| Pino 68 | PA11 — GPIO PA11 / USB_DM |
| Pino 69 | PA12 — GPIO PA12 / USB_DP |
| Pino 70 | PA13 — GPIO PA13 / SWDIO |
| Pino 71 | VSS — Ground |
| Pino 72 | VDD — Digital supply voltage |
| Pino 73 | PA14 — GPIO PA14 / SWCLK |
| Pino 74 | PA15 — GPIO PA15 / JTDI |
| Pino 75 | PC10 — GPIO PC10 / UART4_TX |
| Pino 76 | PC11 — GPIO PC11 / UART4_RX |
| Pino 77 | PC12 — GPIO PC12 / UART5_TX |
| Pino 78 | PD0 — GPIO PD0 |
| Pino 79 | PD1 — GPIO PD1 |
| Pino 80 | PD2 — GPIO PD2 / UART5_RX |
| Pino 81 | PD3 — GPIO PD3 |
| Pino 82 | PD4 — GPIO PD4 |
| Pino 83 | PD5 — GPIO PD5 |
| Pino 84 | PD6 — GPIO PD6 |
| Pino 85 | PD7 — GPIO PD7 |
| Pino 86 | PB3 — GPIO PB3 / JTDO |
| Pino 87 | PB4 — GPIO PB4 / NJTRST |
| Pino 88 | PB5 — GPIO PB5 |
| Pino 89 | PB6 — GPIO PB6 / I2C1_SCL |
| Pino 90 | PB7 — GPIO PB7 / I2C1_SDA |
| Pino 91 | BOOT0 — Boot mode selection |
| Pino 92 | PB8 — GPIO PB8 / TIM4_CH3 |
| Pino 93 | PB9 — GPIO PB9 / TIM4_CH4 |
| Pino 94 | PE0 — GPIO PE0 / TIM4_ETR |
| Pino 95 | PE1 — GPIO PE1 |
| Pino 96 | VSS — Ground |
| Pino 97 | VDD — Digital supply voltage |
| Pino 98 | PE2 — GPIO PE2 / TRACECLK |
| Pino 99 | PE3 — GPIO PE3 / TRACEDATA0 |
| Pino 100 | VREF+ — ADC reference voltage |
Aplicações típicas
STM32L151VCT6A é adequado para 7 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM32L151VCT6A — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Lowest Stop-mode current in 100-LQFP Cortex-M3 class (vs GD32F303VCT6)
- Integrated 4 KB true EEPROM (vs STM32F100VCT6B)
- Optional integrated LCD segment controller (vs STM32L152VCT6A)
Notas de projeto
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.
Informações de conformidade
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.
