STM32L072CZT6 - 192KB Flash Cortex-M0+ MCU | STMicroelectronics
N.º da peça: STM32L072CZT6 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.12 | $6,12 |
| 10 | $5.42 | $54,20 |
| 100 | $4.75 | $475,00 |
| 500 | $4.21 | $2.105,00 |
| 1.000 | $3.78 | $3.780,00 |
STM32L072CZT6 Visão geral
An ARM Cortex-M0+ microcontroller (MCU) is a 32-bit RISC processor core from ARM's Cortex-M family optimized for energy efficiency and deterministic interrupt response in deeply embedded systems. The Cortex-M0+ sits at the low-power end of the Cortex-M lineup (Cortex-M0+ -> Cortex-M0 -> Cortex-M3/M4/M33), and STM32L0 microcontrollers sit at the low-power end of the STM32 product hierarchy (STM32L0 -> STM32L1/L4/L5 -> STM32F/G/H families). L0-series MCUs target coin-cell, sensor, metering, and wearable designs where standby current and integrated analog peripherals matter more than raw compute throughput.
Key features of the STM32L072CZT6 include 192 KB Flash with ECC, 20 KB SRAM, a 12-bit ADC with hardware oversampling, two ultra-low-power comparators, a real-time clock, multiple timers, and a USB 2.0 full-speed device interface that operates without an external crystal. The device supports AES-128 hardware encryption for secure connectivity in IoT endpoints. Integrated peripherals include I2C, SPI, USART, USB, and capacitive-touch sensing I/Os.
The architecture combines a Cortex-M0+ core with ST's ultra-low-power design techniques, including multiple voltage domains, low-power RTC, and a wide set of GPIOs tolerant to 5 V. The 48-pin LQFP package balances compact board footprint with easy hand-soldering and breadboard prototyping, and supports the full STM32L072xx peripheral set on the available I/O count.
Typical applications include battery-powered IoT sensors, USB-connected wearables, smart metering endpoints, wireless sensor nodes, medical patch devices, asset trackers, and human-machine interface panels. Designers value the part for USB connectivity in small form factors, deep-sleep currents, and an established STM32 toolchain (STM32CubeIDE, HAL/LL libraries). When designing with this part, plan decoupling around the 1.2 V core regulator pin and verify the low-power mode transitions in your application firmware before committing to battery-life calculations.
Alternativas drop-in para STM32L072CZT6 — 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 STM32L072CZT6 (mesmo formato e footprint) — diferindo em ADC, Communication Interfaces, Core, Timers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STM32L073CZT6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L072CZT3
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L072CZT6D
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L053CZT6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L083CZT6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
STM32L072CZT6 Classificações máximas e características elétricas
| Core | ARM Cortex-M0+ (32-bit) |
| Frequência máxima de clock | 32 MHz |
| Flash Memory | 192 KB |
| SRAM | 20 KB |
| Supply Voltage (VDD) | 1.65 V to 3.6 V |
| Supply Voltage (BOR enabled) | 1.8 V to 3.6 V |
| Temperatura de operação | -40 C to +85 C (grade 6) |
| Encapsulamento | 48-pin LQFP (7x7 mm) |
| Tipo de montagem | Surface Mount |
| USB | USB 2.0 full-speed device (crystal-less) |
| ADC | 12-bit, hardware oversampling |
| Comparators | 2 ultra-low-power comparators |
| Timers | Multiple 16-bit and 32-bit timers (see datasheet) |
| Communication Interfaces | I2C, SPI, USART, USB |
| AES Hardware | AES-128 |
| RTC | Yes, with calendar and tamper |
| I/Os | Up to 37 GPIOs (package-dependent) |
| Status RoHS | Compliant |
Configuração de pinos do STM32L072CZT6
| Pino 1 | PB9 — GPIO PB9 / I2C1_SDA |
| Pino 2 | PB10 — GPIO PB10 / I2C2_SDA |
| Pino 3 | PB11 — GPIO PB11 / I2C2_SCL |
| Pino 4 | VDD — Digital supply voltage |
| Pino 5 | PB12 — GPIO PB12 / SPI2_NSS |
| Pino 6 | PB13 — GPIO PB13 / SPI2_SCK |
| Pino 7 | PB14 — GPIO PB14 / SPI2_MISO |
| Pino 8 | PB15 — GPIO PB15 / SPI2_MOSI |
| Pino 9 | PA8 — GPIO PA8 |
| Pino 10 | PA9 — GPIO PA9 / USART1_TX |
| Pino 11 | PA10 — GPIO PA10 / USART1_RX |
| Pino 12 | PA11 — GPIO PA11 / USB_DM |
| Pino 13 | PA12 — GPIO PA12 / USB_DP |
| Pino 14 | PA13 — GPIO PA13 / SWDIO |
| Pino 15 | VSS — Digital ground |
| Pino 16 | VDD — Digital supply voltage |
| Pino 17 | PA14 — GPIO PA14 / SWCLK |
| Pino 18 | PA15 — GPIO PA15 / JTDI |
| Pino 19 | PB3 — GPIO PB3 / JTDO |
| Pino 20 | PB4 — GPIO PB4 / NJTRST |
| Pino 21 | PB5 — GPIO PB5 |
| Pino 22 | PB6 — GPIO PB6 / I2C1_SCL |
| Pino 23 | PB7 — GPIO PB7 / I2C1_SDA |
| Pino 24 | PB8 — GPIO PB8 |
| Pino 25 | VSS — Digital ground |
| Pino 26 | VDD — Digital supply voltage |
| Pino 27 | PC13 — GPIO PC13 / RTC_TAMP |
| Pino 28 | PC14 — GPIO PC14 / OSC32_IN |
| Pino 29 | PC15 — GPIO PC15 / OSC32_OUT |
| Pino 30 | VSS — Digital ground |
| Pino 31 | VDDA — Analog supply voltage |
| Pino 32 | VREF+ — ADC reference voltage |
| Pino 33 | PA0 — GPIO PA0 / ADC_IN0 |
| Pino 34 | PA1 — GPIO PA1 / ADC_IN1 |
| Pino 35 | PA2 — GPIO PA2 / ADC_IN2 / USART2_TX |
| Pino 36 | PA3 — GPIO PA3 / ADC_IN3 / USART2_RX |
| Pino 37 | PA4 — GPIO PA4 / ADC_IN4 |
| Pino 38 | PA5 — GPIO PA5 / ADC_IN5 |
| Pino 39 | PA6 — GPIO PA6 / ADC_IN6 |
| Pino 40 | PA7 — GPIO PA7 / ADC_IN7 |
| Pino 41 | PC0 — GPIO PC0 / ADC_IN10 |
| Pino 42 | PC1 — GPIO PC1 / ADC_IN11 |
| Pino 43 | PC2 — GPIO PC2 / ADC_IN12 |
| Pino 44 | PC3 — GPIO PC3 / ADC_IN13 |
| Pino 45 | VSSA — Analog ground |
| Pino 46 | VREF- — ADC reference ground |
| Pino 47 | VSS — Digital ground |
| Pino 48 | VDD — Digital supply voltage |
Aplicações típicas
STM32L072CZT6 é adequado para 6 aplicaçãos: Battery-Powered IoT Sensor Nodes, USB-Connected Wearable Devices, Smart Metering Endpoints, Medical Patch and Health Monitoring Devices, Asset Tracking and Cold-Chain Loggers, Human-Machine Interface Panels.
Battery-Powered IoT Sensor Nodes
The STM32L072CZT6 fits battery-powered IoT sensor nodes because of its sub-microamp Standby current (sub-uA) and 192 KB Flash for sensor-stack firmware. Its 32 MHz Cortex-M0+ core is fast enough for periodic sensor sampling while sleeping deeply between events, which directly extends CR2032 coin-cell life. According to the ST datasheet, Stop mode with RTC draws less than 1 uA, enabling multi-year battery deployments for environmental sensors.
Recomendado
USB-Connected Wearable Devices
The STM32L072CZT6 is well matched to USB-connected wearables because of its crystal-less USB 2.0 full-speed device interface and 192 KB Flash for vendor-class USB stacks. Designers save a 48 MHz crystal and reduce BOM cost while maintaining USB compliance, per the ST datasheet. The LQFP-48 package fits on small wearable PCAs with 5 V-tolerant GPIOs for charger integration.
Recomendado
Smart Metering Endpoints
Smart metering applications benefit from the STM32L072CZT6's RTC with calendar, tamper detection, AES-128 hardware encryption, and 12-bit ADC for voltage/current sensing. The part's wide 1.65-3.6 V supply supports battery-backed meter designs, and the LQFP-48 footprint provides enough I/Os for meter interfaces. According to the datasheet, AES-128 hardware runs at low power without CPU overhead, securing AMI traffic.
Recomendado
Medical Patch and Health Monitoring Devices
The STM32L072CZT6 suits medical patch devices thanks to its low-power modes, 12-bit ADC with hardware oversampling, and 192 KB Flash for DSP-style signal processing. According to the ST datasheet, the 12-bit ADC reaches 16-bit effective resolution with oversampling, supporting accurate bio-potential measurements. The LQFP-48 package is small enough for wearable form factors and has 5 V-tolerant GPIOs for sensor interfacing.
Recomendado
Asset Tracking and Cold-Chain Loggers
Cold-chain and asset tracking applications benefit from the STM32L072CZT6's RTC calendar, low-power Stop mode, AES-128 for signed log integrity, and 192 KB Flash for local storage of time-stamped events. The 32 MHz Cortex-M0+ core is sufficient to drive temperature/humidity sampling and USB-based log extraction in field service. Per ST documentation, the part handles -40 C to +85 C industrial environments.
Recomendado
Human-Machine Interface Panels
The STM32L072CZT6 supports HMI panel designs with its capacitive-touch sensing I/Os, 12-bit ADC for analog slider feedback, AES-128 for secure boot, and 192 KB Flash for graphics state machines. The LQFP-48 footprint provides sufficient I/O count for keypad scanning plus LCD segment driving via external drivers. The crystal-less USB interface supports field firmware updates without an external oscillator.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STM32L072CZT6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STM32L073CZT6 | STM32L072CZT3 | STM32L072CZT6D | STM32L053CZT6 | STM32L083CZT6 |
|---|---|---|---|---|---|---|
| Package | LQFP-48 (7x7 mm) | LQFP-48 (7x7 mm) - same | LQFP-48 (7x7 mm) - same | LQFP-48 (7x7 mm) - same | LQFP-48 (7x7 mm) - same | LQFP-48 (7x7 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 192 KB | 192 KB | 192 KB | 192 KB | 192 KB | 192 KB |
| SRAM | 20 KB | 20 KB | 20 KB | 20 KB | 20 KB | 20 KB |
| USB Peripheral | Yes (crystal-less USB 2.0 FS) | Yes | Yes | Yes | No | Yes |
| AES-128 Hardware | Yes | Yes | Yes | Yes | Yes | Yes |
| Wireless Connectivity | None | Sigfox | None | None | None | LoRa |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
Principais diferenciais
- Crystal-less USB 2.0 full-speed peripheral (vs STM32L053CZT6)
- Optional wireless connectivity without PCB rework (vs STM32L073CZT6)
- 192 KB Flash headroom for USB stacks (vs STM32L052C8T6)
Notas de projeto
Estimated: at 32 MHz active core current with peripherals disabled the STM32L072CZT6 draws around 1 mA/MHz per ST datasheet figures. Add 100 nF + 10 uF ceramic decoupling near each VDD/VDDA pin and a ferrite bead between digital and analog supplies for clean ADC readings. Use the integrated voltage regulator to drive VDD from a 1.8 V to 3.3 V rail and avoid supplying core voltage externally.
At low duty cycles the STM32L072CZT6 spends nearly all its time in Stop or Standby, so self-heating is negligible. For continuous-active designs at 32 MHz, the LQFP-48 theta_JA around 65 C/W produces only a few degrees of rise even without a copper pour. Still place thermal vias under the exposed pad if your PCB stackup supports it.
Route the USB DP/DM pair (PA11/PA12) as a 90 ohm differential with length matching within 150 mils and keep them away from switching nodes. The crystal-less USB relies on internal trimming, so a clean 3.3 V rail with low ripple is essential. Per ST AN4879, place the USB common-mode choke near the connector side of the route.
Do not exceed 3.6 V on any pin including 5 V-tolerant GPIOs. Make sure BOOT0 is tied low for normal Flash boot and pulled high only for system memory bootloader access. Disable unused peripherals in PWR register settings before entering Stop mode to achieve sub-microamp current per the ST reference manual RM03510.
Informações de conformidade
RoHS and REACH compliance per ST product page. Not AEC-Q100 qualified - this is a commercial/consumer part. For automotive applications use the equivalent -A or -Q suffix variant if available.
