STM32L162RET6 - Ultra-Low-Power ARM Cortex-M3 MCU | STMicroelectronics
MPN: STM32L162RET6 ✓ Hoạt độngSTM32L162RET6 Tóm tắt
An ultra-low-power microcontroller (MCU) is a type of embedded processor optimized for minimal power consumption, often featuring multiple low-power modes, low supply voltages, and efficient clock management. These MCUs are essential in battery-operated devices, IoT sensors, and portable medical equipment where extending battery life is critical. The STM32L1 series sits within the broader STM32 family, which spans from low-power to high-performance Cortex-M based MCUs, and is part of the ARM Cortex-M ecosystem.
Key features of the STM32L162RET6 include a 32 MHz ARM Cortex-M3 core with memory protection unit (MPU), 512 KB Flash, 80 KB SRAM, and a comprehensive set of peripherals: USB 2.0 full-speed device, LCD controller supporting up to 8x40 segments, AES-128 hardware encryption, 12-bit ADC, 12-bit DAC, multiple timers, and communication interfaces (USART, SPI, I2C). It operates from 1.8V to 3.6V supply and features several low-power modes: Sleep, Low-power Run, Low-power Sleep, Stop with RTC, and Standby, with current consumption as low as 0.3 uA in Standby mode.
The STM32L162RET6 is built on ST's ultra-low-power technology, which combines a low-leakage process with dynamic voltage scaling and a flexible clock gating architecture. This enables the MCU to achieve industry-leading energy efficiency, with a typical active-mode current of 230 uA/MHz. The integrated AES-128 encryption engine provides hardware-accelerated security for data protection, making it suitable for secure communication and authentication applications.
Typical applications include smart meters, medical devices (e.g., glucose monitors, hearing aids), industrial sensors, IoT nodes, and portable consumer electronics. The LCD controller and USB interface make it ideal for human-machine interface (HMI) applications, while the AES engine supports secure data logging and communication.
When designing with this device, pay attention to the power supply decoupling: place a 100 nF capacitor close to each VDD pin and a 4.7 uF capacitor at the main supply. Use the low-power modes effectively by configuring the RTC and wake-up sources to minimize average current consumption. The STM32L162RET6 is available in LQFP64 package, which is pin-compatible with other STM32L1 series devices in the same package, allowing easy migration.
Bộ thay thế dễ dàng lắp đặt cho STM32L162RET6 — 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 STM32L162RET6 (cùng hình factor và footprint) — khác nhau ở Communication Interfaces, Flash Memory, Package, SRAM.
STM32L162RCT6
✅ Drop-In ⚠️ Thông số chưa được xác minh✗ Hết hàng
$2.8636 / Đơn vị
Xem tài liệu →STM32L152RET6
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
STM32L151RET6
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
STM32L162RDT6
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
STM32L162R8T6
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
STM32L162RET6 Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M3 |
| Max Clock Frequency | 32 MHz |
| Flash Memory | 512 KB |
| SRAM | 80 KB |
| Điện áp cung cấp | 1.8 V to 3.6 V |
| Hộp | LQFP64 (10x10 mm) |
| Nhiệt độ hoạt động | -40C to +85C |
| GPIO Pins | 51 |
| ADC | 12-bit, 16 channels |
| DAC | 12-bit, 2 channels |
| Timers | 8 (16-bit and 32-bit) |
| Communication Interfaces | USB 2.0 FS, 3x USART, 2x SPI, 2x I2C |
| LCD Controller | 8x40 segments |
| AES Encryption | 128-bit hardware |
| Standby Current | 0.3 uA |
| Active Current | 230 uA/MHz |
| Trạng thái RoHS | Compliant |
Cấu hình chân STM32L162RET6
| Chân 1 | VBAT — Battery backup supply |
| Chân 2 | PC13 — GPIO / RTC tamper |
| Chân 3 | PC14 — GPIO / OSC32_IN |
| Chân 4 | PC15 — GPIO / OSC32_OUT |
| Chân 5 | PF0 — GPIO / OSC_IN |
| Chân 6 | PF1 — GPIO / OSC_OUT |
| Chân 7 | NRST — Reset (active low) |
| Chân 8 | VSSA — Analog ground |
| Chân 9 | VDDA — Analog power supply |
| Chân 10 | PA0 — GPIO / ADC_IN0 |
| Chân 11 | PA1 — GPIO / ADC_IN1 |
| Chân 12 | PA2 — GPIO / USART2_TX |
| Chân 13 | PA3 — GPIO / USART2_RX |
| Chân 14 | PA4 — GPIO / SPI1_NSS |
| Chân 15 | PA5 — GPIO / SPI1_SCK |
| Chân 16 | PA6 — GPIO / SPI1_MISO |
| Chân 17 | PA7 — GPIO / SPI1_MOSI |
| Chân 18 | PB0 — GPIO / ADC_IN8 |
| Chân 19 | PB1 — GPIO / ADC_IN9 |
| Chân 20 | PB2 — GPIO / BOOT1 |
| Chân 21 | PB10 — GPIO / I2C2_SCL |
| Chân 22 | PB11 — GPIO / I2C2_SDA |
| Chân 23 | PB12 — GPIO / SPI2_NSS |
| Chân 24 | PB13 — GPIO / SPI2_SCK |
| Chân 25 | PB14 — GPIO / SPI2_MISO |
| Chân 26 | PB15 — GPIO / SPI2_MOSI |
| Chân 27 | PC6 — GPIO / USART6_TX |
| Chân 28 | PC7 — GPIO / USART6_RX |
| Chân 29 | PC8 — GPIO / USART6_CK |
| Chân 30 | PC9 — GPIO / USB_DM |
| Chân 31 | PA8 — GPIO / USB_DP |
| Chân 32 | PA9 — GPIO / USART1_TX |
| Chân 33 | PA10 — GPIO / USART1_RX |
| Chân 34 | PA11 — GPIO / USART1_CTS |
| Chân 35 | PA12 — GPIO / USART1_RTS |
| Chân 36 | PA13 — GPIO / SWDIO |
| Chân 37 | PA14 — GPIO / SWCLK |
| Chân 38 | PA15 — GPIO / JTDI |
| Chân 39 | PB3 — GPIO / JTDO |
| Chân 40 | PB4 — GPIO / NJTRST |
| Chân 41 | PB5 — GPIO / I2C1_SMBA |
| Chân 42 | PB6 — GPIO / I2C1_SCL |
| Chân 43 | PB7 — GPIO / I2C1_SDA |
| Chân 44 | PB8 — GPIO / I2C1_SCL |
| Chân 45 | PB9 — GPIO / I2C1_SDA |
| Chân 46 | VSS — Ground |
| Chân 47 | VDD — Power supply |
| Chân 48 | PC10 — GPIO / USART4_TX |
| Chân 49 | PC11 — GPIO / USART4_RX |
| Chân 50 | PC12 — GPIO / USART5_TX |
| Chân 51 | PD2 — GPIO / USART5_RX |
| Chân 52 | VSS — Ground |
| Chân 53 | VDD — Power supply |
| Chân 54 | PC0 — GPIO / ADC_IN10 |
| Chân 55 | PC1 — GPIO / ADC_IN11 |
| Chân 56 | PC2 — GPIO / ADC_IN12 |
| Chân 57 | PC3 — GPIO / ADC_IN13 |
| Chân 58 | PC4 — GPIO / ADC_IN14 |
| Chân 59 | PC5 — GPIO / ADC_IN15 |
| Chân 60 | PB8 — GPIO / I2C1_SCL |
| Chân 61 | PB9 — GPIO / I2C1_SDA |
| Chân 62 | VSS — Ground |
| Chân 63 | VDD — Power supply |
| Chân 64 | VDD — Power supply |
Ứng dụng tiêu biểu
STM32L162RET6 phù hợp cho 6 Áp dụngs: Smart Meters, Medical Devices, Industrial Sensors, IoT Nodes, Portable Consumer Electronics, Human-Machine Interface (HMI).
Smart Meters
The STM32L162RET6 is ideal for smart meters due to its ultra-low power consumption, integrated LCD controller for display, and AES encryption for secure data transmission. In a typical smart meter, the MCU reads sensor data, processes it, and communicates via wireless or wired interfaces. The low standby current (0.3 uA) ensures long battery life, while the 32 MHz Cortex-M3 core handles complex metering algorithms. The LCD controller directly drives the display, reducing external components. The AES engine secures communication with the utility network, protecting against tampering. Compared to other MCUs, the STM32L162RET6 offers a balance of performance, power, and security, making it a preferred choice for metering applications.
Được đề xuất
Medical Devices
The STM32L162RET6 is well-suited for portable medical devices such as glucose monitors and pulse oximeters. Its ultra-low power consumption extends battery life, critical for wearable health monitors. The integrated 12-bit ADC accurately samples sensor signals, while the USB interface enables data transfer to a host for analysis. The AES encryption ensures patient data security. In a glucose monitor, the MCU reads the sensor, processes the reading, and displays it on an LCD. The low-power modes allow the device to run for months on a coin cell battery. The STM32L162RET6's small LQFP64 package fits compact designs, and its wide supply voltage range accommodates battery voltage variations.
Được đề xuất
Industrial Sensors
The STM32L162RET6 is used in industrial sensors for monitoring temperature, pressure, and flow. Its robust operating temperature range (-40C to +85C) and low power consumption make it suitable for remote and battery-powered sensors. The multiple communication interfaces (USART, SPI, I2C) allow easy integration with industrial networks. The 12-bit ADC provides accurate sensor readings, and the AES encryption secures data in critical infrastructure. In a typical industrial sensor node, the MCU periodically wakes from sleep, reads the sensor, and transmits data via a wireless module. The low standby current ensures long battery life, reducing maintenance costs. The STM32L162RET6's performance is sufficient for real-time processing, while its power efficiency is a key advantage.
Được đề xuất
IoT Nodes
The STM32L162RET6 is a popular choice for IoT nodes due to its ultra-low power consumption and integrated security features. In an IoT node, the MCU collects data from sensors, processes it, and transmits it to a gateway via wireless protocols like LoRa, Zigbee, or BLE. The AES encryption ensures secure communication, and the low-power modes enable battery-powered operation for years. The STM32L162RET6's 512 KB Flash provides ample space for firmware and data logging. Its multiple communication interfaces allow connection to various sensors and radios. Compared to other MCUs, the STM32L162RET6 offers a good balance of performance, power, and security, making it ideal for edge devices in smart agriculture, smart city, and industrial IoT.
Được đề xuất
Portable Consumer Electronics
The STM32L162RET6 is used in portable consumer electronics such as fitness trackers, smartwatches, and remote controls. Its ultra-low power consumption is essential for battery-powered devices that need to last weeks or months. The integrated LCD controller can drive small displays, and the USB interface allows charging and data transfer. The AES encryption protects user data. In a fitness tracker, the MCU reads accelerometer data, processes steps, and displays them on an LCD. The low-power modes allow the device to run for weeks on a small battery. The STM32L162RET6's small package and rich peripheral set make it a versatile choice for consumer devices.
Được đề xuất
Human-Machine Interface (HMI)
The STM32L162RET6 is suitable for HMI applications such as control panels and smart home displays. Its integrated LCD controller supports up to 8x40 segments, enabling direct drive of alphanumeric displays without external drivers. The USB interface allows connection to a host for configuration. The AES encryption secures communication in smart home systems. In a typical HMI, the MCU reads user inputs from buttons or touch sensors, updates the display, and communicates with other devices. The low-power modes allow the device to remain in standby when not in use, saving energy. The STM32L162RET6's rich peripheral set and low power consumption make it an excellent choice for HMI applications.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho STM32L162RET6 — 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 | STM32L162RCT6 | STM32L152RET6 | STM32L151RET6 | STM32L162RDT6 | STM32L162R8T6 |
|---|---|---|---|---|---|---|
| Package | LQFP64 | LQFP64 | LQFP64 | LQFP64 | LQFP64 | LQFP64 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Flash Memory | 512 KB | 256 KB | 512 KB | 512 KB | 384 KB | 128 KB |
| SRAM | 80 KB | 32 KB | 80 KB | 80 KB | 48 KB | 16 KB |
| AES Encryption | Yes | Yes | No | No | Yes | Yes |
| LCD Controller | Yes | Yes | Yes | No | Yes | Yes |
| Max Clock Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Standby Current | 0.3 uA | 0.3 uA | 0.3 uA | 0.3 uA | 0.3 uA | 0.3 uA |
Bảo phân biệt quan trọng
- Hardware AES-128 encryption (vsSTM32L152RET6)
- 512 KB Flash memory (vsSTM32L162RCT6)
- Integrated LCD controller (vsSTM32L151RET6)
Ghi chú thiết kế
For ultra-low-power operation, use the low-power modes effectively. In Standby mode, the STM32L162RET6 consumes only 0.3 uA. To achieve this, disable the RTC and all peripherals, and configure the wake-up sources properly. Use the Low-power Run mode for tasks that require the CPU but at reduced clock speed to minimize current. Ensure the supply voltage is within 1.8V to 3.6V and decouple each VDD pin with a 100 nF capacitor and a 4.7 uF bulk capacitor.
Place decoupling capacitors close to the power pins. For the LQFP64 package, place a 100 nF capacitor near each VDD/VSS pair and a 4.7 uF capacitor at the main supply entry. Keep the analog supply (VDDA) separate from digital supply with a ferrite bead to reduce noise. Ensure the ground plane is continuous under the MCU to minimize EMI and provide a low-impedance return path.
Do not exceed the absolute maximum ratings, especially the supply voltage (3.6V) and the voltage on any pin (VDD+0.3V). When using the ADC, ensure the analog reference voltage is stable and filtered. For USB operation, use a 1.5 kOhm pull-up on the D+ line and ensure the VBUS is within spec. Also, configure the clock source correctly; the internal HSI RC oscillator is less accurate than an external crystal, which may be required for USB or precise timing.
Thông tin tuân thủ
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32L1 series with AEC-Q100 option.
