STM32L412R8T6 - 80MHz Cortex-M4 MCU | STMicroelectronics
料号： STM32L412R8T6 ✓ 量产中STM32L412R8T6 概述
A microcontroller is a programmable semiconductor that integrates a processor core, memory, and peripherals into one package. The STM32L4 family belongs to the hierarchy of embedded processors, Arm Cortex-M microcontrollers, low-power MCUs, and semiconductor devices. Its Cortex-M4 architecture supports efficient control-oriented software, while the STM32L412R8T6 combines that processing capability with a 64-pin surface-mount package.
The principal verified specifications are an 80 MHz maximum operating frequency, 32-bit processing width, and 64 KB of flash memory. The 64-LQFP package provides 64 leads and a 10 x 10 mm body size. Manufacturer search data also identifies the device as an ultra-low-power MCU with USB capability. Detailed RAM capacity, voltage range, ADC characteristics, timer configuration, and current-consumption figures require confirmation in the manufacturer datasheet.
The STM32L412R8T6 is positioned for compact embedded systems that need more processing capability than a basic 8-bit controller without adopting a larger high-performance MCU. Its Arm Cortex-M4 core provides a common instruction set and development ecosystem, while the STM32L412xx family is designed around low-power embedded applications. Exact peripheral availability and pin multiplexing must be checked against the order-code-specific pinout.
Typical uses include low-power sensor nodes, USB peripheral equipment, industrial monitoring modules, compact consumer accessories, and battery-operated embedded controllers. In these systems, the 80 MHz core can support responsive control logic, while the 64 KB flash store provides room for firmware and configuration data. The 64-LQFP package remains compatible with conventional PCB assembly and inspection processes.
Designers should verify the complete order code, voltage ratings, exposed-pin requirements, decoupling, clock configuration, and peripheral pin assignments in the STM32L412xx manufacturer datasheet before layout release. Particular care is required when a design depends on USB, crystal timing, boot behavior, or low-current measurements because those values are not present in the supplied distributor snippets.
This page consolidates the verified manufacturer and distributor information, distinguishes exact published data from parameters still requiring datasheet confirmation, and provides application guidance and same-family drop-in alternatives for engineering review. Every proposed alternative still requires firmware, peripheral, timing, and qualification verification before production substitution.
直接替换替代料： STM32L412R8T6 ——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： STM32L412R8T6 （相同外形与封装尺寸） ——差异在于 Package.
STM32L412RET6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L412RBT6P
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32L412RBT7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L412RET7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L412R8T7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32L412R8T6 最大额定值与电气特性
| Product Type | Ultra-low-power 32-bit microcontroller |
| Processor Core | Arm Cortex-M4 with FPU |
| Instruction Set | 32-bit Arm RISC |
| Maximum CPU Frequency | 80 MHz |
| Flash Memory | 64 KB |
| Flash Organization | 64K x 8 bits |
| 封装 | 64-LQFP |
| Package Body Size | 10 x 10 mm |
| Lead Count | 64 leads |
| 安装类型 | Surface mount |
| USB Capability | Yes |
| Power Class | Ultra-low power |
STM32L412R8T6 10 x 10 mm 引脚配置指南
STM32L412R8T6（10 x 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： STM32L412R8T6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32L412R8T6 适用于 6 应用s: Low-Power USB Sensor Node, Industrial Environmental Monitoring, USB Peripheral and Configuration Tool, Battery-Powered Portable Accessory, Compact Control and HMI Module, Embedded Security and Access Controller.
Low-Power USB Sensor Node
The STM32L412R8T6 fits a USB-connected environmental sensor node because it combines an 80 MHz Arm Cortex-M4 core, 64 KB of flash, and USB capability in a 64-LQFP package. The microcontroller can execute acquisition sequencing, filtering, calibration logic, and a USB device stack within one compact controller. Its STM32L4-series ultra-low-power positioning can help preserve battery life during idle periods, although the design must use verified sleep-current and wake-up figures for a final energy budget. Place the USB data connections and supported transceiver circuitry according to the manufacturer reference design, and keep sensitive analog routing separated from high-current switching paths.
推荐
Industrial Environmental Monitoring
The STM32L412R8T6 is appropriate for industrial monitoring equipment that must combine sensor acquisition, local filtering, communications, and low standby consumption. Its 80 MHz Cortex-M4 core provides enough responsiveness for digital compensation and control, while 64 KB of flash stores application firmware and configuration data. The 64-LQFP 10 x 10 mm package exposes more I/O than a small microcontroller package and accommodates industrial interfaces, debug access, and power distribution. A production design must verify the exact ADC characteristics, operating voltage, clock accuracy, and temperature range from the order-code-specific manufacturer documentation before qualifying it for field deployment.
推荐
USB Peripheral and Configuration Tool
The STM32L412R8T6 can serve as the controller in a USB peripheral, configuration tool, or service interface because its verified feature set includes USB alongside an 80 MHz 32-bit Cortex-M4 core and 64 KB of flash. Firmware can handle enumeration, command processing, device configuration, and data transfer without requiring a separate application processor. The 64-LQFP package provides a practical route for routing power, debug, USB, and control signals. Designers should confirm the exact USB electrical characteristics and whether crystal or internal-clock arrangements satisfy their cable and bus requirements, since those details are not included in the supplied distributor snippets.
推荐
Battery-Powered Portable Accessory
The STM32L412R8T6 suits battery-powered portable accessories that need responsive control logic without adopting a high-power MCU. The Cortex-M4 core can run user-interface state machines, sensor fusion, communications, and low-power background tasks at up to 80 MHz, while the STM32L412xx family's ultra-low-power positioning supports duty-cycled operation. Its 64 KB flash capacity is suitable for moderately sized embedded applications, and the 64-LQFP package is practical for compact multilayer boards. Battery-life calculations must be based on verified operating, sleep, and wake-up currents because those values were not supplied; regulator efficiency and external-sensor consumption may dominate the final system power budget.
推荐
Compact Control and HMI Module
The STM32L412R8T6 can serve as the central controller in a compact human-machine interface module, combining button or encoder handling, display updates, status indication, and communication updates. The 80 MHz Cortex-M4 core supports responsive multitasking and protocol processing, while 64 KB of flash provides space for a bootloader and application firmware. The 64-lead LQFP package offers enough external connections for display interfaces, control signals, debug, and power rails while remaining broadly assemblable. Exact display timing, touch-controller interfaces, and peripheral mappings should be checked against the manufacturer pin descriptions before schematic sign-off, particularly if the product uses a compact connector-limited enclosure.
推荐
Embedded Security and Access Controller
The STM32L412R8T6 is suitable for an embedded access-control or security peripheral that must react to local inputs while remaining a low-power USB device. The Cortex-M4 core can execute authentication state machines, communication protocols, event logging, and tamper-response logic, and the USB capability supports direct host connectivity. The 64 KB flash store provides room for firmware and controlled data, while the 64-LQFP package supports power, debug, communication, and discrete I/O. Security implementations must add suitable cryptographic and tamper-resistant hardware where required, validate all timing and peripheral functions, and qualify firmware updates according to the product's threat model rather than relying on microcontroller packaging alone.
推荐
推荐产品汇总
工程参考数据： STM32L412R8T6 ——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 | STM32L412RET6 | STM32L412RBT6 | STM32L412RBT7 | STM32L412RET7 | STM32L412R8T7 |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10 x 10 mm) | 64-LQFP (10 x 10 mm) - same footprint | 64-LQFP (10 x 10 mm) - same footprint | 64-LQFP (10 x 10 mm) - same footprint | 64-LQFP (10 x 10 mm) - same footprint | 64-LQFP (10 x 10 mm) - same footprint |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| 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 | Arm Cortex-M4 with FPU |
| Maximum CPU Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| USB Capability | Yes | Yes | Yes | Yes | Yes | Yes |
| Power Class | Ultra-low power | Ultra-low power | Ultra-low power | Ultra-low power | Ultra-low power | Ultra-low power |
| Temperature Ordering Suffix | T6 | T6 | T6 | T7 | T7 | T7 |
关键差异点
- Documented high-frequency Cortex-M4 performance （对比 STM32F072RBH6TR)
- Compact 64-LQFP implementation （对比 STM32F072RBH6TR)
- Directly identified USB support （对比 Generic STM32 MCU candidates)
- Same-brand family path for footprint-qualified review （对比 STM32L412RBT7)
设计说明
Use the exact STM32L412R8T6 package drawing when creating the PCB footprint rather than inferring dimensions from a generic 64-LQFP symbol. The verified package is 64-LQFP at 10 x 10 mm, but lead pitch, span, pin-one orientation, and pad recommendations must come from the manufacturer package drawing. Confirm every signal against the order-code pin table and preserve courtyard clearance for the assembly equipment. A mechanically similar footprint can still produce assembly defects if pin numbering, paste geometry, or solder-mask clearance is copied from an unrelated LQFP device.
Calculate the internal power rail and external regulator design only after obtaining the STM32L412xx operating-voltage and current limits from the manufacturer datasheet. The supplied evidence confirms an 80 MHz Cortex-M4 core, 64 KB flash, USB capability, and 64-LQFP package, but it does not provide supply-current or voltage data. Decoupling, power sequencing, USB bus-powered behavior, and brownout behavior therefore must follow the official hardware guidance. Do not infer current limits from the 80 MHz clock rating or from the distributor listing.
Do not treat a shared STM32L412 family suffix as proof of identical behavior. Ordering codes can encode flash density, package, temperature grade, and product option, while firmware compatibility also depends on the exact peripheral set, errata, boot configuration, and reference manual. For each proposed same-footprint alternative, compare the pin table, memory map, clock tree, USB implementation, ADC characteristics, package drawing, and ordering code. Then rerun production firmware and qualification tests rather than relying on the family name alone.
Route USB, clock, and sensitive analog signals with the shortest practical paths and provide return paths beneath the relevant traces. Place required input, output, and bypass capacitors close to their associated pins according to the manufacturer hardware guidance, and keep switching-regulator traces away from ADC and reference inputs. USB data routing must follow the device's reference design because impedance, rise-time, and topology requirements are not present in the supplied search data. Validate the completed board for signal integrity and electromagnetic compatibility rather than relying only on schematic checks.
合规信息
The supplied manufacturer and distributor snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These values must be confirmed from the current STMicroelectronics product declaration or product page.