STM32L031C4T6 - 32MHz Arm Cortex-M0+ MCU | STMicroelectronics
料号： STM32L031C4T6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.389 | $4.39 |
| 10 | $4.12 | $41.20 |
| 100 | $3.65 | $365.00 |
| 500 | $3.18 | $1,590.00 |
| 1,000 | $2.87 | $2,870.00 |
| 3,000 | $2.55 | $7,650.00 |
STM32L031C4T6 概述
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, working data memory, and peripherals into one device. The STM32L031C4T6 belongs to the STM32L0 family, whose Arm Cortex-M0+ architecture supports efficient control workloads while emphasizing low power consumption. Its 48-LQFP package provides 38 I/O positions according to the verified distributor listing, allowing external sensors, communications, and actuators to be connected without relying on a large fine-pitch package.
Verified headline specifications include a 32 MHz CPU frequency, 16 KB of Flash organized as 16K x 8, 32-bit architecture, and a 48-LQFP package. STMicroelectronics describes the STM32L031x4/6 family as an access line of ultra-low-power MCUs. The part is suitable for designs where a compact controller, low-power operation, and a conventional through-hole-style leaded package are more important than maximum memory density or a high-pin-count surface-mount footprint.
Technical suitability depends on the exact peripheral mix, RAM capacity, voltage range, clock configuration, and low-power figures associated with the selected orderable variant. Those values were not included in the supplied verified data, so they are not inferred here. Designers should use the official STM32L031C4 product page and manufacturer datasheet for definitive pin functions, electrical limits, memory details, and peripheral availability before schematic capture.
Typical applications include compact environmental sensors, industrial condition-monitoring nodes, low-power remote controls, building and access equipment, small battery-operated instruments, and communication peripherals. The 48-LQFP format can simplify prototyping and manual rework compared with very fine-pitch packages, while the Cortex-M0+ ecosystem supports mainstream embedded C development and established debugging workflows.
Designers should confirm every assigned 48-LQFP pin against the official pinout, especially for SWD programming, clocks, reset, and power pins. PCB planning should also provide clean grounding, accessible test points, and decoupling close to the device. Because the supplied search results do not expose detailed application-note schematics, this page avoids presenting unverified reference-circuit values.
This page combines verified manufacturer and distributor data, same-package replacement guidance, practical integration considerations, and structured procurement information. It adds engineering context beyond a basic distributor listing while clearly separating confirmed facts from parameters that still require datasheet confirmation.
直接替换替代料： STM32L031C4T6 ——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： STM32L031C4T6 （相同外形与封装尺寸） ——差异在于 Flash Memory, Package, Core, Communication Interfaces, Maximum CPU Frequency.
快速对比工具——选择替代料号进行并排对比：
STM32L031C6T6
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
联系询价
查看数据手册 →STM32F031C4T6
✅ 直接替换📋 参考替代料（不在目录中）
STM32F030C4T6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F030C8T6TR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.98 / 个
查看数据手册 →STM32F030CCT6TR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.48 / 个
查看数据手册 →STM32L031C4T6 最大额定值与电气特性
| Product Type | 32-bit ultra-low-power microcontroller (MCU) |
| Manufacturer | STMicroelectronics |
| Part Number | STM32L031C4T6 |
| CPU Core | Arm Cortex-M0+ |
| Architecture | 32-bit RISC |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 16 KB (16K x 8) |
| Program Memory Type | Flash |
| 封装 | 48-LQFP (7 x 7 mm) |
| Number of I/O | 38 |
| 安装类型 | Surface Mount |
STM32L031C4T6 48-lqfp (7 x 7 mm) 引脚配置指南
STM32L031C4T6（48-lqfp (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： STM32L031C4T6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32L031C4T6 适用于 6 应用s: Battery-Powered Environmental Sensor Node, Industrial Condition-Monitoring Controller, Low-Power Remote Control, Smart Building Access and Control Module, Compact Communication Gateway, Battery-Operated Test and Measurement Instrument.
Battery-Powered Environmental Sensor Node
The STM32L031C4T6 fits compact environmental sensors because its 32 MHz Arm Cortex-M0+ core provides useful control throughput while the STM32L0 family emphasizes ultra-low-power operation. Its 16 KB of Flash can hold the acquisition logic, calibration data, and communication state machine for a compact node. The verified package is 48-LQFP, and distributor data lists 38 I/O positions for sensor and actuator connections. Use low-power modes when possible, but verify actual current, wake-up timing, and ADC limits in the manufacturer datasheet. A key tradeoff is that 16 KB of Flash constrains firmware size, so peripheral-heavy applications should be budgeted carefully.
推荐
Industrial Condition-Monitoring Controller
The STM32L031C4T6 is appropriate for industrial monitoring modules that sample sensors and control indicators while keeping board size moderate. Its 32-bit Cortex-M0+ processor can handle interrupt-driven acquisition, local filtering, and status logic, while 16 KB of Flash supports a focused application rather than a large graphical interface. The 48-LQFP 7 x 7 mm package is easier to inspect and rework than a very fine-pitch alternative. Industrial suitability nevertheless depends on the verified temperature grade, supply limits, ESD performance, and EMC system design. Confirm pin multiplexing and peripheral availability before allocating the listed 38 I/O positions.
推荐
Low-Power Remote Control
The STM32L031C4T6 works well in a handheld remote because the ultra-low-power STM32L0 platform targets battery-operated control products. A 32 MHz Cortex-M0+ core can scan switches, debounce inputs, update indicators, and encode commands without requiring a high-performance processor. Its 16 KB of Flash is appropriate for compact production firmware, although it offers less program space than larger STM32 devices. Use the verified 48-LQFP package when a leaded package improves assembly or inspection. Verify sleep-mode current, wake-up sources, GPIO drive settings, and operating-temperature limits before defining the battery-life target, because those figures were not included in the supplied sources.
推荐
Smart Building Access and Control Module
The STM32L031C4T6 can serve as the local controller in access-control, door-position, or building-automation modules where power-efficient operation and compactness are priorities. Its 32-bit Cortex-M0+ core supports event handling, timing, and serial protocol tasks, while the listed 38 I/O positions offer practical connectivity for switches, relays, indicators, and sensors. The 48-LQFP package provides adequate spacing for mixed assembly and inspection. Before using it on powered locks or relay outputs, verify the target's exact GPIO ratings and add appropriate protection, isolation, and flyback paths. Firmware should include debounce, timeout, and fail-safe behavior rather than relying only on nominal MCU capability.
推荐
Compact Communication Gateway
The STM32L031C4T6 can act as a protocol-conversion or local communications node when the design needs a 32-bit control core without a large memory footprint. The manufacturer positions the STM32L031x4/6 family as an access-line ultra-low-power MCU, making it useful in low-rate telemetry or local bridging applications. Its 16 KB of Flash favors compact protocol stacks and should be checked against the chosen UART, SPI, or I2C implementation. The 48-LQFP footprint also makes signal routing more accessible than on a fine-pitch package. Verify the exact peripheral instance, alternate-function mapping, and maximum interface rates before replacing a larger gateway MCU; a successful drop-in claim is not sufficient.
推荐
Battery-Operated Test and Measurement Instrument
The STM32L031C4T6 is suitable for small, battery-powered measurement products that need local control, acquisition sequencing, and a compact display or data interface. Its 32 MHz Cortex-M0+ core can control instruments, apply calibration, and format results within a constrained embedded design. The 16 KB Flash budget requires disciplined code organization, while 38 listed I/O positions can support sensors, buttons, and displays. Because the verified data does not include ADC resolution, accuracy, or analog input limits, precision-measurement designs must consult the official electrical specifications. Use local buffering and careful grounding, and confirm whether the available timer and communication resources satisfy the acquisition plan.
推荐
推荐产品汇总
工程参考数据： STM32L031C4T6 ——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 | STM32L031C6T6 | STM32F031C4T6 | STM32F030C4T6 | STM32F030C8T6TR | STM32F030CCT6TR |
|---|---|---|---|---|---|---|
| Package | 48-LQFP (7 x 7 mm) | 48-LQFP (7 x 7 mm) - same | 48-LQFP (7 x 7 mm) - same | 48-LQFP (7 x 7 mm) - same | 48-LQFP (7 x 7 mm) - same | 48-LQFP (7 x 7 mm) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| CPU Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB (16K x 8) | 32 KB | 16 KB | 16 KB | 24 KB | 64 KB |
| Architecture | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC | 32-bit RISC |
| Product Positioning | Ultra-low-power STM32L0 access line | Ultra-low-power STM32L0 access line | STM32F0 general-purpose family | STM32F0 value-line family | STM32F0 value-line family | STM32F0 value-line family |
关键差异点
- Purpose-built ultra-low-power family positioning （对比 STM32F031C4T6)
- Higher CPU ceiling within the STM32F030 value-line candidates （对比 STM32F030C4T6)
- Direct same-family memory option with added capacity （对比 STM32L031C6T6)
设计说明
Assign the STM32L031C4T6 schematic from the official 48-LQFP pin table rather than from a generic STM32L0 drawing. Reserve the SWD programming pins, power pins, reset path, and clock inputs exactly as specified by STMicroelectronics. Keep decoupling capacitors close to their associated supply pins and provide a low-impedance ground plane. Because the supplied data confirms the 7 x 7 mm LQFP but does not include lead names or exposed-pad details, those items must be verified before PCB release.
Power-budget the target from verified operating-mode currents rather than assuming that a 32 MHz CPU always operates continuously. For a rough comparison only, a hypothetical 3.3 V rail delivering 10 mA corresponds to 33 mW of load before regulator or board losses; this is an estimate, not a manufacturer specification. Select the regulator and bulk capacitance using the confirmed supply range, load transients, and low-power wake-up requirements from the datasheet. Do not infer battery life without the applicable sleep and standby currents.
Preserve signal and power integrity by keeping sensitive sensor inputs away from switching nodes and high-current return paths. Route SWD, sensor, and communication signals with short paths and continuous reference planes, while avoiding test-point stubs where possible. The 48-LQFP footprint is relatively easy to assemble, but lead spacing still requires adequate clearance under the manufacturer's land pattern. Validate creepage, clearance, and decoupling placement against the final enclosure, cable interfaces, and production tolerances.
The most common replacement mistake is assuming that two MCUs in the same STM32 family or the same LQFP package are automatically interchangeable. Before substituting any listed candidate, compare all 48 pins, alternate functions, power architecture, clock limits, memory map, peripherals, SWD behavior, and startup state. Firmware can also depend on the exact device ID and flash size, so update boot code and linker settings only after confirming the candidate's full orderable specification.
合规信息
The supplied manufacturer and distributor snippets do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status. AEC-Q100 is not applicable unless a specific automotive-qualified orderable variant is verified.