STM32L072CZT6 - 192KB Flash Cortex-M0+ MCU | STMicroelectronics
MPN: STM32L072CZT6 ✓ Hoạt độngSTM32L072CZT6 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho STM32L072CZT6 — 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 STM32L072CZT6 (cùng hình factor và footprint) — khác nhau ở ADC, Communication Interfaces, Core, Timers.
STM32L073CZT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L072CZT3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L072CZT6D
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L053CZT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L083CZT6
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STM32L072CZT6 Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M0+ (32-bit) |
| Tần số xung maksimum | 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 |
| Nhiệt độ hoạt động | -40 C to +85 C (grade 6) |
| Hộp | 48-pin LQFP (7x7 mm) |
| Kiểu lắp đặt | 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) |
| Trạng thái RoHS | Compliant |
Cấu hình chân STM32L072CZT6
| Chân 1 | PB9 — GPIO PB9 / I2C1_SDA |
| Chân 2 | PB10 — GPIO PB10 / I2C2_SDA |
| Chân 3 | PB11 — GPIO PB11 / I2C2_SCL |
| Chân 4 | VDD — Digital supply voltage |
| Chân 5 | PB12 — GPIO PB12 / SPI2_NSS |
| Chân 6 | PB13 — GPIO PB13 / SPI2_SCK |
| Chân 7 | PB14 — GPIO PB14 / SPI2_MISO |
| Chân 8 | PB15 — GPIO PB15 / SPI2_MOSI |
| Chân 9 | PA8 — GPIO PA8 |
| Chân 10 | PA9 — GPIO PA9 / USART1_TX |
| Chân 11 | PA10 — GPIO PA10 / USART1_RX |
| Chân 12 | PA11 — GPIO PA11 / USB_DM |
| Chân 13 | PA12 — GPIO PA12 / USB_DP |
| Chân 14 | PA13 — GPIO PA13 / SWDIO |
| Chân 15 | VSS — Digital ground |
| Chân 16 | VDD — Digital supply voltage |
| Chân 17 | PA14 — GPIO PA14 / SWCLK |
| Chân 18 | PA15 — GPIO PA15 / JTDI |
| Chân 19 | PB3 — GPIO PB3 / JTDO |
| Chân 20 | PB4 — GPIO PB4 / NJTRST |
| Chân 21 | PB5 — GPIO PB5 |
| Chân 22 | PB6 — GPIO PB6 / I2C1_SCL |
| Chân 23 | PB7 — GPIO PB7 / I2C1_SDA |
| Chân 24 | PB8 — GPIO PB8 |
| Chân 25 | VSS — Digital ground |
| Chân 26 | VDD — Digital supply voltage |
| Chân 27 | PC13 — GPIO PC13 / RTC_TAMP |
| Chân 28 | PC14 — GPIO PC14 / OSC32_IN |
| Chân 29 | PC15 — GPIO PC15 / OSC32_OUT |
| Chân 30 | VSS — Digital ground |
| Chân 31 | VDDA — Analog supply voltage |
| Chân 32 | VREF+ — ADC reference voltage |
| Chân 33 | PA0 — GPIO PA0 / ADC_IN0 |
| Chân 34 | PA1 — GPIO PA1 / ADC_IN1 |
| Chân 35 | PA2 — GPIO PA2 / ADC_IN2 / USART2_TX |
| Chân 36 | PA3 — GPIO PA3 / ADC_IN3 / USART2_RX |
| Chân 37 | PA4 — GPIO PA4 / ADC_IN4 |
| Chân 38 | PA5 — GPIO PA5 / ADC_IN5 |
| Chân 39 | PA6 — GPIO PA6 / ADC_IN6 |
| Chân 40 | PA7 — GPIO PA7 / ADC_IN7 |
| Chân 41 | PC0 — GPIO PC0 / ADC_IN10 |
| Chân 42 | PC1 — GPIO PC1 / ADC_IN11 |
| Chân 43 | PC2 — GPIO PC2 / ADC_IN12 |
| Chân 44 | PC3 — GPIO PC3 / ADC_IN13 |
| Chân 45 | VSSA — Analog ground |
| Chân 46 | VREF- — ADC reference ground |
| Chân 47 | VSS — Digital ground |
| Chân 48 | VDD — Digital supply voltage |
Ứng dụng tiêu biểu
STM32L072CZT6 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STM32L072CZT6 — 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 | 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 |
Bảo phân biệt quan trọng
- Crystal-less USB 2.0 full-speed peripheral (vsSTM32L053CZT6)
- Optional wireless connectivity without PCB rework (vsSTM32L073CZT6)
- 192 KB Flash headroom for USB stacks (vsSTM32L052C8T6)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
