STM32L476RCT6 - 80MHz Cortex-M4 MCU, 256KB Flash | STMicroelectronics
料号： STM32L476RCT6 ✓ 量产中STM32L476RCT6 概述
An ultra-low-power microcontroller is a semiconductor device designed to complete control, sensing, communications, and data-processing tasks while minimizing energy consumption. The STM32L4 series belongs to the STM32 32-bit MCU family and combines an Arm Cortex-M4 core with embedded Flash, SRAM, security functions, analog resources, and communication interfaces. This hierarchy makes the device suitable for industrial controls, portable instruments, connected sensors, medical equipment, and human-interface systems where both processing performance and energy efficiency matter.
The STM32L476RCT6 provides 256 KB Flash, a 32-bit RISC architecture, and operation up to 80 MHz. Its integrated USB OTG full-speed interface supports USB-connected peripherals and portable systems, while its LCD interface is useful for local graphical or segmented displays. The device also supports an external switched-mode power supply configuration, as indicated by the STM32L476xx family documentation, giving designers additional options for power-system implementation.
Arm Cortex-M4 architecture provides efficient instruction execution and an integrated floating-point unit for control algorithms, digital filtering, and sensor processing. The STM32L476xx family supports up to 100 DMIPS, while the STM32L476RCT6 specifically combines that processing class with 256 KB Flash in a 64-pin LQFP package. The LQFP-64 footprint exposes more peripheral and general-purpose I/O than smaller packages while remaining suitable for leaded, high-temperature assembly processes.
Typical applications include industrial sensor nodes, USB-connected data loggers, portable medical monitors, energy-management equipment, LCD-equipped control panels, and connected IoT devices. The combination of an 80 MHz core, USB OTG FS, LCD support, and low-power microcontroller positioning allows one device to consolidate several functions and reduce the number of discrete components in a compact embedded design.
PCB implementation should follow the manufacturer’s LQFP-64 pinout and recommended decoupling, clock, reset, and power-layout guidance. Designers should verify the exact pin assignments, peripheral alternate functions, operating-voltage limits, and startup configuration in the STM32L476xx datasheet before releasing a PCB or firmware.
This product page combines package, memory, core, interface, and application information with practical comparison data for STM32L476 family alternatives. It is structured to help engineers identify the correct memory-density or temperature-grade family member while preserving the shared STM32L476RCT6 board footprint and hardware design.
直接替换替代料： STM32L476RCT6 ——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： STM32L476RCT6 （相同外形与封装尺寸） ——差异在于 Package, Flash Memory, SRAM, External SMPS Support, LCD Controller.
STM32L476RBT6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L476RDT6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L476RET6
✅ 直接替换联系询价
查看数据手册 →STM32L476RGT6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32L476RCT6 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 |
| Instruction Set | 32-bit RISC |
| Maximum CPU Frequency | 80 MHz |
| Maximum Core Performance | 100 DMIPS |
| Flash Memory | 256 KB |
| USB Interface | USB OTG full-speed |
| Display Support | LCD interface |
| External SMPS Support | Supported by STM32L476xx family |
| 封装 | 64-LQFP (10 mm × 10 mm) |
| 安装类型 | Surface mount |
STM32L476RCT6 64-lqfp (10 mm × 10 mm) 引脚配置指南
STM32L476RCT6（64-lqfp (10 mm × 10 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： STM32L476RCT6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32L476RCT6 适用于 6 应用s: USB Connected Data Logger, Industrial Sensor Node, Portable Medical Monitor, LCD Instrument Control Panel, Connected IoT Sensor, Energy Management Controller.
USB Connected Data Logger
The STM32L476RCT6 fits compact USB data loggers because its 80 MHz Arm Cortex-M4 core can sample, filter, and format measurements while the integrated USB OTG full-speed interface provides a direct device connection. The 256 KB Flash option can hold firmware, configuration tables, and a boot loader without requiring an external memory component. A practical design places decoupling close to each supply pin, routes USB D+ and D− as a controlled impedance pair, and uses the SWD programming interface for manufacturing and firmware recovery. The principal benefit is consolidation: processing, local data storage, and USB communication can share one microcontroller instead of requiring separate interface hardware.
推荐
Industrial Sensor Node
The STM32L476RCT6 is appropriate for industrial sensor nodes that need local computation, communication, and low standby demand in a compact 64-LQFP footprint. Its Arm Cortex-M4 with FPU can execute filtering and compensation algorithms at up to 80 MHz, while 256 KB of Flash provides room for drivers, communications stacks, and calibration logic. Designers can use low-power firmware modes during idle periods and activate the processing core only when measurements are required. For robust deployment, validate the exact voltage and temperature requirements, isolate sensitive analog measurement paths, follow the recommended ground and decoupling layout, and confirm peripheral availability for the selected production suffix.
推荐
Portable Medical Monitor
The STM32L476RCT6 supports portable medical-monitor designs requiring real-time signal conditioning, interface management, and local display control in one microcontroller. The 80 MHz Cortex-M4 core can execute digital filtering and float-based calculations, while the LCD interface can reduce the component count associated with local patient or instrument displays. USB OTG full-speed may support configuration exchange, charging-interface integration, or connection to a host system when the product’s safety and regulatory architecture permits it. Engineers should determine whether the exact temperature grade, electrical limits, and qualification level satisfy the intended medical application before production use, while keeping analog and digital return paths well controlled.
推荐
LCD Instrument Control Panel
The STM32L476RCT6 fits instrument and control-panel products where a local LCD must operate alongside real-time control and data communications. Its integrated LCD controller can reduce parallel-display driver overhead, while the Cortex-M4 core provides enough performance for keypad handling, menu logic, calibration, and communication protocols. The 256 KB Flash configuration is useful for moderate firmware sizes and can simplify updates by keeping the application image, configuration data, and boot code on one device. Layout the LCD traces away from high-speed clocks and switching nodes, maintain the manufacturer’s recommended supply and ground arrangement, and verify that the selected panel interface uses only the I/O functions available on the exact package variant.
推荐
Connected IoT Sensor
The STM32L476RCT6 is well suited to connected IoT sensors because it combines an 80 MHz processing core, 256 KB Flash, low-power positioning, USB, and extensive microcontroller peripherals in one device. The Cortex-M4 with FPU can preprocess sensor data before transmission, filter noisy measurements, and handle protocol state machines without a separate host processor. Using the device’s low-power modes can extend battery life when sensing and communication are intermittent. A robust implementation should isolate radio and switching-regulator sections from analog inputs, follow the manufacturer’s clock and decoupling guidance, and size the firmware and external storage around the 256 KB Flash boundary.
推荐
Energy Management Controller
The STM32L476RCT6 can serve as the central controller in energy-management equipment that coordinates sensing, timing, display, and communication functions. Its 80 MHz Cortex-M4 core supports fast control-loop calculations, and the family’s external SMPS option gives engineers additional implementation flexibility when designing efficient power conversion around the MCU. The microcontroller can monitor control signals, enforce operating sequences, and record state information in its 256 KB Flash. For dependable operation, separate sensitive measurement paths from digital switching activity, verify power sequencing and decoupling requirements, and use the manufacturer’s reference guidance when configuring SMPS-related pins and external components.
推荐
推荐产品汇总
工程参考数据： STM32L476RCT6 ——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 | STM32L476RBT6 | STM32L476RDT6 | STM32L476RET6 | STM32L476RGT6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 64-LQFP (10 mm × 10 mm) | 64-LQFP (10 mm × 10 mm) | 64-LQFP (10 mm × 10 mm) | 64-LQFP (10 mm × 10 mm) | 64-LQFP (10 mm × 10 mm) |
| Processor Core | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Maximum Core Performance | 100 DMIPS | 100 DMIPS | 100 DMIPS | 100 DMIPS | 100 DMIPS |
| Flash Memory | 256 KB | 128 KB | 512 KB | 512 KB | 1 MB |
| USB Interface | USB OTG full-speed | USB OTG full-speed | USB OTG full-speed | USB OTG full-speed | USB OTG full-speed |
| Display Support | LCD interface | LCD interface | LCD interface | LCD interface | LCD interface |
| Architecture | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC |
关键差异点
- Balanced 256 KB memory configuration （对比 STM32L476RBT6)
- Lower footprint complexity than maximum-density options （对比 STM32L476RGT6)
- Directly expandable same-family memory options （对比 STM32L476RET6)
设计说明
Use the manufacturer’s recommended supply, VCAP, and decoupling configuration for the STM32L476xx family. Place each local decoupling capacitor adjacent to its associated power pin and keep the return path within the same ground plane region. The exact voltage range and capacitor values must be taken from the manufacturer datasheet because the product listing does not provide those electrical details. Avoid sharing narrow return paths between high-current peripherals and the Cortex-M4 core.
Reserve the full 64-LQFP land pattern even when selecting a different STM32L476R-series Flash density. Follow the manufacturer’s pinout and land-pattern drawings for pad dimensions, solder-mask clearance, and copper definition. Keep the SWD programming interface accessible, route reset and clock inputs away from noisy peripherals, and confirm exposed-pad or thermal-relief requirements for the selected package before fabrication.
Route USB D+ and D− as a tightly coupled, length-matched pair on a continuous reference plane and follow the manufacturer’s USB implementation guidance. The STM32L476RCT6 supports USB OTG full-speed, making signal integrity important when cable length, EMI, or adjacent switching circuitry is present. Likewise, keep LCD and high-speed peripheral traces away from oscillator and power-conversion nodes, while providing a quiet return path beneath each interface group.
Do not treat another STM32L476R-series density as automatically interchangeable. Although the alternatives share the LQFP-64 footprint, changing from 256 KB to 128 KB can leave insufficient firmware space, while 512 KB or 1 MB options alter the available memory map and device identification. Review bootloader placement, vector-table assumptions, peripheral availability, temperature grade, and production ordering codes before approving a substitution.
Operating frequency and power consumption can vary with clock configuration, workload, voltage, and enabled peripherals. Use the manufacturer’s current-consumption and thermal information for the final operating condition rather than assuming a single value. For sustained 80 MHz operation, provide clean supply routing and adequate PCB copper, and evaluate enclosure temperature rise against the selected suffix’s limits before committing to production.
合规信息
The manufacturer product page and exact-MPN listing do not explicitly state the requested compliance statuses. Automotive qualification is not indicated for the standard STM32L476RCT6 ordering code.
