STM32L443CCU6 - 80MHz Cortex-M4 MCU | STMicroelectronics
料号： STM32L443CCU6 ✓ 量产中STM32L443CCU6 概述
A microcontroller is a programmable semiconductor that integrates a processor core, memory, peripherals, and communication interfaces on one chip. The STM32L4 series belongs to the Arm Cortex-M4 microcontroller hierarchy and emphasizes energy-efficient operation. Its low-power modes make the STM32L443CCU6 suitable for battery-powered sensors, portable instruments, connected industrial equipment, and compact user-interface controllers where sleep-mode demand can affect overall service life.
The STM32L443CCU6 operates at up to 80 MHz and provides 256 KB of Flash plus 64 KB of RAM. Its Arm Cortex-M4 core includes a floating-point unit for efficient arithmetic operations, while the integrated AES accelerator supports hardware-assisted encryption. The operating-supply range of 1.71 V to 3.6 V accommodates low-energy embedded systems, and the package supports surface-mount assembly in space-constrained products.
Low-power behavior is a central design feature of the STM32L4 family. The device can consume 200 nA in VBAT mode while maintaining real-time-clock and backup-register operation, and it can enter an 8 nA shutdown mode with five wake-up pins. These figures allow firmware to preserve selected state and respond to external events without continuously running the main processor and peripheral systems.
Typical applications include low-energy environmental sensors, wearable and wellness-device controllers, connected medical accessories, industrial condition-monitoring nodes, USB-connected portable equipment, and compact human-machine-interface controllers. Engineers can use the Cortex-M4 processing capability for control logic, the AES accelerator for protected data workflows, and the low-power modes for duty-cycled operation.
Design the power tree around the 1.71 V to 3.6 V operating range, use decoupling close to the supply pins, and validate wake-up behavior in the final clock, peripheral, and GPIO configuration. If cryptographic performance, memory capacity, package dimensions, and peripheral assignments are critical, review the complete pin and peripheral tables before releasing a PCB layout.
This product overview combines the manufacturer's core device specifications, package information, practical low-power design guidance, and validated same-package replacement analysis to support faster component selection and PCB planning.
直接替换替代料： STM32L443CCU6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32L443CCU6 （相同外形与封装尺寸） ——差异在于 Processor Core, Product Type, Backup Registers.
STM32L433CCU6
✅ 直接替换联系询价
查看数据手册 →STM32L431CCU6
✅ 直接替换📋 参考替代料（不在目录中）
STM32L443CCU6 最大额定值与电气特性
| Product Type | 32-bit ultra-low-power microcontroller |
| Processor Core | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 80 MHz |
| Flash Memory | 256 KB |
| RAM | 64 KB |
| 工作电源电压 | 1.71 V to 3.6 V |
| 封装 | 48-pin UFQFPN, 7 x 7 mm |
| 安装类型 | Surface mount |
| VBAT Mode Current | 200 nA |
| Shutdown Mode Current | 8 nA |
| Shutdown Wake-Up Inputs | 5 pins |
| Backup Registers | 32 x 32-bit registers |
| Real-Time Clock Supply | VBAT operation supported |
| Crypto Accelerator | AES hardware accelerator |
| Peripheral Support | LCD and USB interfaces supported |
| Temperature Range | -40 °C to 85/105/125 °C, grade dependent |
| 引脚数量 | 48 pins |
STM32L443CCU6 48-pin ufqfpn, 7 x 7 mm 引脚配置指南
STM32L443CCU6（48-pin ufqfpn, 7 x 7 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： STM32L443CCU6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32L443CCU6 适用于 6 应用s: Battery-Powered Environmental Sensor, USB-Connected Portable Instrument, Protected Connected Control Node, Compact Human-Machine Interface Controller, Low-Power Industrial Condition Monitor, Battery-Backed Medical Accessory.
Battery-Powered Environmental Sensor
The STM32L443CCU6 fits environmental sensors that spend most of their service life between measurements. Its 200 nA VBAT mode can maintain RTC-related operation and 32 x 32-bit backup registers, while the 8 nA shutdown mode with five wake-up inputs supports event-driven sensing. The 80 MHz Cortex-M4 core handles filtering, compensation, and local data processing, and the 1.71 V to 3.6 V supply range supports low-energy power architectures. Actual battery performance should be calculated from the sensor duty cycle, regulator quiescent current, wake-up latency, and time spent in active mode.
推荐
USB-Connected Portable Instrument
The STM32L443CCU6 is appropriate for portable instruments that use USB for configuration, data transfer, or charging-system integration. Its USB support avoids requiring a separate USB interface when the design can share the MCU's processing and peripheral resources. The 80 MHz Cortex-M4 core, FPU, and 256 KB Flash provide room for measurement control, calibration logic, and communication firmware, while the 48-pin UFQFPN package supports compact layouts. Confirm the required USB speed, connector implementation, power sourcing, and alternate-function assignments against the manufacturer pin table before PCB release.
推荐
Protected Connected Control Node
The STM32L443CCU6 suits connected control nodes that perform local processing while protecting stored information or command traffic. Its AES hardware accelerator provides a dedicated path for encryption operations, while the Arm Cortex-M4 core and FPU manage control logic and numerical tasks. The device can operate across 1.71 V to 3.6 V and can be placed into low-power states between network events, helping balance responsiveness and energy use. A secure product still requires a complete threat model, protected key storage strategy, authenticated firmware workflow, and validation of the selected cryptographic library.
推荐
Compact Human-Machine Interface Controller
The STM32L443CCU6 can serve as the controller for compact displays and touch-driven industrial or medical equipment. Its LCD interface support provides a direct path to suitable display panels, while the 80 MHz Cortex-M4 processor provides enough performance for graphical updates, input handling, and system coordination. The 48-pin 7 x 7 mm UFQFPN package conserves board area, although LCD data lines and other interfaces must be assigned carefully through alternate-function multiplexing. Validate display timing, contrast interface, touch-controller ownership, ESD strategy, and backlight power architecture with the complete electrical and pinout documentation.
推荐
Low-Power Industrial Condition Monitor
The STM32L443CCU6 fits industrial condition-monitoring equipment that samples slowly and must operate without continuous mains power. Its 200 nA VBAT current, 8 nA shutdown current, and five wake-up inputs enable duty-cycled measurement, while RTC support and backup registers help preserve timing and diagnostic context. The Cortex-M4 core can perform filtering and compensation, and the 1.71 V to 3.6 V supply range supports multiple low-energy rail architectures. Field reliability also depends on selecting the correct temperature grade, protecting the PCB from industrial transients, and validating sensor accuracy across the full environmental range.
推荐
Battery-Backed Medical Accessory
The STM32L443CCU6 can support compact medical accessories that need low standby demand and optional data protection. The FPU assists numerical processing, AES hardware acceleration can accelerate protected-data operations, and the low-power modes reduce consumption between user interactions or measurements. Its 48-pin UFQFPN package helps limit product size, and the 1.71 V to 3.6 V operating range supports carefully regulated portable power systems. Medical use requires separate risk assessment, electrical-safety validation, firmware controls, and confirmation that the selected operating-temperature grade matches the intended environment.
推荐
推荐产品汇总
工程参考数据： STM32L443CCU6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM32L433CCU6 | STM32L431CCU6 |
|---|---|---|---|
| Package | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm | 48-pin UFQFPN, 7 x 7 mm |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 |
关键差异点
- Integrated AES hardware acceleration （对比 STM32L433CCU6)
- High-performance Cortex-M4 processing platform （对比 STM32L433CCU6)
- Ultra-low-power shutdown operation （对比 STM32L431CCU6)
- Compact surface-mount footprint （对比 STM32L431CCU6)
设计说明
Design the supply for the full 1.71 V to 3.6 V operating range and place local decoupling close to the supply pins. If the product uses VBAT backup operation, treat the 200 nA VBAT specification as a system-level target: regulator leakage, pull networks, analog circuitry, and sensor standby current can dominate the final consumption. For shutdown operation, the 8 nA figure likewise applies to the MCU mode and must be combined with every load that remains connected to the battery.
Review the manufacturer's 48-pin UFQFNN package drawing for the exposed-pad connection, copper requirements, and reflow profile. Use the pin-description and alternate-function tables to assign USB, LCD, debug, clock, and GPIO functions without conflicts. Keep high-current and fast-edge USB routing away from sensitive analog inputs, and preserve the manufacturer's recommended ground-plane continuity under the device.
Do not treat same-package interchangeability as proof of firmware equivalence. The STM32L433CCU6 retains the principal 80 MHz processing platform and memory configuration but does not provide the STM32L443CCU6 AES accelerator. Review clock-tree settings, peripheral instances, interrupt assignments, startup behavior, flash organization, and firmware dependencies before substituting a part. A successful electrical fit is insufficient if software expects a cryptographic peripheral that the alternative does not implement.
Design low-power wake-up behavior into firmware rather than treating the shutdown current as a complete battery-lifetime result. The five shutdown wake-up inputs allow external events to restart the MCU, but the total energy per measurement also includes sensor startup, oscillator stabilization, processing time, and communication activity. Measure each duty-cycle phase on the finished board and confirm that GPIO states cannot back-power the MCU or an attached peripheral during shutdown.
合规信息
The manufacturer product page and device listings do not state the requested environmental compliance statuses in the material available for this record. Confirm RoHS, REACH, lead-free, halogen-free, and conflict-minerals documentation with STMicroelectronics before procurement release.