STM32L431VCT6 - 80MHz Cortex-M4F MCU | STMicroelectronics
부품 번호: STM32L431VCT6 ✓ 활성STM32L431VCT6 개요
An ultra-low-power microcontroller is an embedded processing device designed to balance computational performance with low energy consumption. The STM32L431VC family belongs to the STM32L4 series and combines an Arm Cortex-M4 RISC core, embedded Flash, SRAM, analog resources, timers, and communication peripherals within one integrated circuit. This hierarchy places the MCU above the Cortex-M4 processor core and below the broader embedded semiconductor and industrial-control device categories.
The STM32L431VCT6 operates as a 32-bit Arm Cortex-M4 MCU with a maximum frequency of 80 MHz. Its Cortex-M4 core includes a single-precision FPU capable of executing single-precision floating-point instructions, while the processor also supports a full set of DSP instructions. The 256 KB Flash configuration provides dedicated program storage, while the 64 KB SRAM value reported for the device supports working memory for control loops, communications, and peripheral data handling.
The 100-pin LQFP package exposes substantially more I/O than smaller 32-pin or 64-pin microcontroller packages, allowing integration of multiple analog inputs, timers, serial interfaces, and external-memory connections on one device. Its 14 mm by 14 mm leaded package is also suitable for automated assembly and inspection processes. The operating temperature grade encoded by the T6 suffix and the complete ordering-code details should be confirmed against the manufacturer ordering information before production release.
Typical uses include industrial sensor nodes, compact industrial controllers, connected measurement equipment, building-automation controllers, battery-powered condition-monitoring systems, and low-power embedded gateways. The Cortex-M4F processing capability is particularly useful when the control application must process sampled analog values or implement digital signal-processing routines without using a higher-power application processor.
PCB planning should begin with the manufacturer's 100-pin package drawing and land pattern. Place decoupling capacitors close to the supply and ground pins, preserve the recommended clock and debug connections, and route sensitive analog inputs away from fast-switching nodes. Firmware, peripheral configuration, pin multiplexing, and low-power behavior should be validated against the STM32L431xx datasheet rather than inferred solely from the order code.
This product record combines the verified 80 MHz operating frequency, Cortex-M4F architecture, 256 KB Flash capacity, 64 KB SRAM, and 100-pin LQFP construction with practical design guidance. It also distinguishes verified characteristics from parameters that require direct confirmation in the manufacturer datasheet, helping engineers assess fit before layout, sourcing, and firmware development begin.
드롭인 대체품: STM32L431VCT6 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: STM32L431VCT6 (동일 폼 팩터 및 풋프린트) — 차이점: Flash Memory, Package, Product Type.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청STM32L431VCT6 최대 정격 & 전기적 특성
| Product Type | 32-bit ultra-low-power microcontroller |
| Processor Core | Arm Cortex-M4 with single-precision FPU |
| Instruction Set | 32-bit Arm RISC |
| Maximum CPU Frequency | 80 MHz |
| DSP Support | Full set of Arm DSP instructions |
| Flash Memory | 256 KB |
| Flash Organization | 256K x 8 bits |
| SRAM | 64 KB |
| 패키지 | 100-pin LQFP (14 mm x 14 mm) |
| 실장 유형 | Surface mount |
| Product Series | STM32L4 series |
| Device Family | STM32L431xx |
| RoHS 상태 | Compliant |
STM32L431VCT6 100-pin lqfp (14 mm x 14 mm) 핀 구성 가이드
STM32L431VCT6(100-pin lqfp (14 mm x 14 mm) 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: STM32L431VCT6.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
STM32L431VCT6 적합 용도: 6 애플리케이션s: Industrial Sensor and Condition Monitoring, Connected Building Automation, Battery-Powered Environmental Sensors, Precision Data Acquisition, Compact Industrial Gateway, Embedded Digital Signal Processing.
Industrial Sensor and Condition Monitoring
The STM32L431VCT6 fits industrial condition-monitoring nodes because its 80 MHz Arm Cortex-M4 core can sample, filter, and evaluate sensor data while the single-precision FPU accelerates numeric calculations. The 256 KB Flash and 64 KB SRAM support local buffering, event logging, and communication firmware without requiring external memory in many designs. Its 100-pin LQFP exposes a broad I/O selection for sensors, status indicators, and field-bus transceivers. Designers should preserve analog grounding, place input filtering close to the pins, and confirm the exact electrical and temperature limits before deployment.
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Connected Building Automation
The STM32L431VCT6 supports connected building-control modules that combine environmental sensing, local logic, and serial communications. Its 80 MHz Cortex-M4 processor provides enough performance for supervisory control, while 256 KB of Flash accommodates application code and 64 KB of SRAM handles protocol and measurement buffers. The 100-pin package allows integration of digital inputs, analog channels, timers, and communications without requiring several separate devices. Power-budget the radio and sensors separately, and use the MCU low-power modes only after accounting for the duty cycle of network activity.
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Battery-Powered Environmental Sensors
The STM32L431VCT6 is suitable for compact environmental sensors that periodically measure temperature, humidity, air quality, or vibration and transmit the results through a low-power communications link. The Arm Cortex-M4F core handles acquisition and signal conditioning at up to 80 MHz, while the 256 KB Flash and 64 KB SRAM accommodate drivers, buffering, and update logic. Low-power operation is central to this application, so firmware should sleep between measurements and disable unused peripherals. Validate the complete power budget including sensors, regulators, and radio rather than estimating from the MCU alone.
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Precision Data Acquisition
The STM32L431VCT6 can serve as the control processor in a compact data-acquisition system requiring real-time sampling, calibration, and data transfer. Its 80 MHz Cortex-M4 core and single-precision FPU support calculations on acquired samples, while 256 KB Flash stores firmware and 64 KB SRAM provides working memory. The 100-pin LQFP allows dedicated connections for analog inputs, references, trigger signals, and communications. Use the manufacturer's pin and application guidance to allocate analog pins, and keep high-current switching paths separated from sensitive measurement traces.
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Compact Industrial Gateway
The STM32L431VCT6 fits compact industrial gateways that translate local sensor or controller data into serial-network messages. Its 80 MHz Cortex-M4F core supports protocol processing and local filtering, and the 256 KB Flash and 64 KB SRAM provide space for networking stacks and application firmware. The broad 100-pin package simplifies simultaneous use of Ethernet or serial interfaces, status I/O, and local storage. Select transceiver and protection components to match the interface voltage and industrial noise environment, and use secure boot or firmware-update procedures appropriate to deployed equipment.
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Embedded Digital Signal Processing
The STM32L431VCT6 is appropriate for embedded DSP tasks such as filtering, vibration analysis, or audio-oriented control that benefit from hardware floating-point support. The Cortex-M4 core operates up to 80 MHz and implements the Arm DSP instruction set, while its single-precision FPU accelerates common numerical operations. With 256 KB of Flash and 64 KB of SRAM, the device can combine signal processing with control and communications tasks. Confirm algorithm timing with the actual compiler and optimization settings, and avoid performing unbounded buffer operations that exceed the available SRAM.
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추천 제품 요약
엔지니어링 참조 데이터: STM32L431VCT6 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| Package | 100-pin LQFP (14 mm x 14 mm) |
| Brand | STMicroelectronics |
| Processor Core | Arm Cortex-M4 with single-precision FPU |
| Maximum CPU Frequency | 80 MHz |
| Architecture | 32-bit Arm RISC |
| Flash Memory | 256 KB |
| SRAM | 64 KB |
| DSP Support | Full set of Arm DSP instructions |
| Series | STM32L4 series |
| RoHS Status | Compliant |
주요 차별점
- Higher clock rate than common Cortex-M3-class STM32 devices (vs STM32F103VCT6TR)
- Larger 100-pin package for expanded board-level connectivity (vs STM32L431RCT6)
- Balanced embedded processing and memory configuration (vs STM32F103VCT6TR)
설계 노트
Create the PCB footprint and symbol from the exact 100-pin LQFP drawing in the STM32L431xx manufacturer datasheet. Confirm pin-1 orientation, land length, lead width, and paste geometry before release. Place the MCU so that decoupling and clock components remain close to their associated pins, and route sensitive analog inputs away from switching-power and high-current traces.
Partition the board power domains before assigning pins and regulator ratings. The 80 MHz Cortex-M4F core and connected peripherals can draw dynamic current during active processing, while the low-power modes reduce demand only when unused clocks and peripherals are disabled. Check the datasheet current tables, regulator startup behavior, and brownout requirements under worst-case transitions rather than sizing the supply from average current alone.
Follow the manufacturer clock and decoupling guidance to preserve signal integrity at the 80 MHz operating limit. Keep the clock source and its supporting components close to the clock pins, provide the shortest practical return path through the ground plane, and avoid routing high-speed or switching nodes beneath sensitive analog inputs. Review unused pins and alternate-function assignments against the device pin table before fabrication.
Do not treat an order code with a similar STM32L431 suffix as interchangeable without checking the complete suffix and package drawing. STM32L431RCT6 shares core and memory characteristics but uses a 64-pin package, so it requires a different PCB footprint. Firmware projects should also be checked for peripheral mapping, clock-tree, startup-file, and toolchain differences before any replacement is approved.
규정 준수 정보
RoHS compliance is reported for the STM32L431VCT6. REACH, automotive qualification, lead-free status, halogen-free status, and conflict-minerals status require confirmation from the manufacturer ordering information or declarations.
