STM32L151C6T6 - 32MHz Cortex-M3 Low-Power MCU | STMicroelectronics
部品番号: STM32L151C6T6 ✓ 生産中STM32L151C6T6 概要
An ultra-low-power microcontroller is an integrated semiconductor device that executes firmware while minimizing energy consumption during active operation and low-power standby. The STM32L1 family hierarchy places this device among low-power 32-bit ARM microcontrollers, combining processor performance, embedded memory, communications peripherals, and power-management capabilities in one surface-mount package.
The STM32L151C6T6 provides a 32-bit ARM Cortex-M3 processor with a maximum clock frequency of 32 MHz. Its 32 KB Flash memory stores application firmware, while the STM32L151x6 family supports connectivity functions including USB. The broader STM32L151 family also includes RTC, LCD, USART, I2C, SPI, timers, ADC, DAC, and comparator resources, making the device applicable to compact control, sensing, communications, and human-interface designs.
The STM32L151 architecture uses ARM Cortex-M3 instruction processing and integrates multiple serial and timing peripherals around the core. This architecture is appropriate for firmware involving interrupt-driven control, protocol management, data acquisition, and low-power monitoring. Exact SRAM capacity, EEPROM capacity, operating voltage range, current consumption, and peripheral performance ratings must be confirmed against the manufacturer documentation for the selected ordering code before final circuit design.
Typical uses include USB-connected portable instruments, low-power sensor nodes, compact industrial controllers, battery-operated equipment, and LCD-driven human-interface modules. The 48-pin LQFP exposes enough I/O and peripheral connections for mixed-signal designs while remaining compatible with conventional leaded-package inspection and assembly processes.
PCB design should preserve the pin arrangement and exposed connections specified by the STM32L151C6 documentation, route sensitive analog inputs away from switching nodes, and place decoupling capacitors close to the appropriate supply pins. Firmware and peripheral configuration should also account for the low-power operating modes and clock tree before power consumption is validated.
This product page combines the manufacturer identity, core processing and memory ratings, package details, interface positioning, application guidance, verified package alternatives, and PCB-oriented design considerations into one engineering-focused reference for evaluating the STM32L151C6T6.
ドロップイン代替品: STM32L151C6T6 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM32L151C6T6 （同一形状・フットプリント） — 相違点: RTC, Flash Memory, Package, Communication Interfaces, Core.
STM32L152C6T6
✅ ドロップイン📋 参考代替品（カタログ未掲載）
STM32L151C6T6 最大定格＆電気的特性
| Product Type | ARM Cortex-M3 Microcontroller |
| Processor Core | ARM Cortex-M3 |
| Architecture | 32-bit |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 32 KB |
| Program Memory Organization | 32K x 8 |
| USB Connectivity | Yes |
| RTC | Yes |
| LCD Support | Yes |
| Serial Interfaces | USART, I2C, and SPI |
| Analog Resources | ADC, DAC, and comparators |
| Timer Resources | Yes |
| パッケージ | 48-LQFP (7 x 7 mm) |
| 実装タイプ | Surface Mount |
STM32L151C6T6 48-lqfp (7 x 7 mm) ピン配置ガイド
STM32L151C6T6 (48-lqfp (7 x 7 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STM32L151C6T6.
詳細は データシート をご参照ください。
主な用途
STM32L151C6T6 の用途: 6 件s: USB-connected portable instruments, Battery-operated sensor nodes, Compact industrial control modules, LCD-driven user interfaces, USB data acquisition and monitoring, Low-power communications equipment.
USB-connected portable instruments
The STM32L151C6T6 is appropriate for portable instruments that need a 32-bit Cortex-M3 processor, USB connectivity, and a compact 48-LQFP footprint. Its 32 MHz operating frequency provides responsive control and data handling, while 32 KB of Flash accommodates application firmware. USB can simplify host connectivity, and the STM32L1 family's low-power orientation supports battery-operated instruments. Designers should confirm USB pin routing, clock configuration, and firmware support in the manufacturer documentation before finalizing the board.
Battery-operated sensor nodes
The STM32L151C6T6 suits compact sensor nodes that periodically wake, acquire measurements, process local data, and return to a low-power state. Its 32-bit Cortex-M3 core handles control logic efficiently, and the family provides timers, ADC, DAC, comparator, RTC, USART, I2C, and SPI resources. These peripherals reduce the need for separate support devices. Battery-life predictions should be based on the device's measured operating and standby currents, sensor duty cycle, and the regulator's own quiescent consumption.
Compact industrial control modules
The STM32L151C6T6 can serve as the central controller in a compact industrial module combining real-time timing, serial communications, and analog signal handling. A 32 MHz Cortex-M3 core supports responsive protocol and control tasks, while timers, ADC, DAC, comparators, USART, I2C, and SPI broaden the available interface set. The 48-LQFP package is practical for higher-visibility assembly and inspection. Industrial designs must verify operating temperature, isolation requirements, EMC constraints, and regulatory applicability for the finished equipment.
LCD-driven user interfaces
The STM32L151C6T6 is well matched to compact LCD-driven interfaces because its STM32L151 family includes LCD support alongside GPIO, timers, and serial communication resources. The Cortex-M3 processor can maintain the display, interpret controls, and manage local data at 32 MHz. Its 32 KB Flash constrains firmware size, so menu assets, fonts, and application code should be budgeted carefully. Display timing, segment mapping, contrast control, and low-power display behavior should be validated with the selected LCD and manufacturer reference information.
USB data acquisition and monitoring
The STM32L151C6T6 supports compact data-acquisition and monitoring designs that combine USB data transfer with local sensor conditioning and control. The 32-bit Cortex-M3 core manages acquisition sequences and protocol processing, while ADC, DAC, comparator, and timer resources support measurement and stimulus functions. Its 48-LQFP format leaves access to numerous I/O and peripheral pins compared with smaller leadless packages. Sensitive analog traces should be isolated from USB and digital switching paths, and grounding should be developed around the analog measurement section.
Low-power communications equipment
The STM32L151C6T6 can anchor low-power communications equipment requiring flexible serial connectivity and low-power behavior. USART, I2C, and SPI support links to sensors, radios, memory, and service interfaces, while the 32 MHz Cortex-M3 core executes protocol and buffering tasks. USB provides an option for configuration, data transfer, or power in suitable product architectures. Firmware should use the low-power modes deliberately, and communication timing should be tested against the intended baud rate, packet profile, and radio sleep schedule.
エンジニアリング参考データ: STM32L151C6T6 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM32L152C6T6 |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 48-LQFP (7 x 7 mm) | 48-LQFP (7 x 7 mm) |
| Processor Core | ARM Cortex-M3 | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz | 32 MHz |
| Flash Memory | 32 KB | 32 KB |
| Architecture | 32-bit | 32-bit |
| USB Connectivity | Yes | Yes |
主な差別化要因
- Matches the documented alternative on core speed （vs STM32L152C6T6)
- Matches the documented alternative in firmware memory capacity （vs STM32L152C6T6)
- Uses the same compact 48-LQFP package format （vs STM32L152C6T6)
設計ノート
Decouple each applicable supply rail directly at the device pins using the capacitance and placement specified in the manufacturer hardware guidelines. Keep the high-current return path short, use a common ground reference for analog and digital sections, and avoid routing USB, timer, or switching-node currents through the ADC input area. Review the complete pin table before assigning shared supply and ground pins.
Preserve the 48-LQFP land pattern and pin-1 orientation from the manufacturer package drawing. Confirm courtyard clearance, solder-mask clearance, paste aperture, and assembly orientation before fabrication. Because the package is only 7 x 7 mm, check for accidental bridges between closely spaced leads and maintain adequate thermal and copper relief around any exposed pad specified for the selected variant.
Place analog inputs, references, and sensing traces away from USB differential routing and other fast digital edges. Use short paths, controlled return current, and a continuous ground plane. For sensitive acquisition circuits, evaluate the ADC source impedance and acquisition time in firmware, then use local filtering where it does not compromise the required signal bandwidth.
Do not assume that an identical package guarantees a drop-in replacement. The STM32L152C6T6 matches the STM32L151C6T6 in core speed, Flash capacity, and LQFP format, but the device-specific peripheral allocation still must be checked. Also account for boot configuration, clock sources, reset behavior, firmware interrupt vectors, and unused-pin requirements during hardware reuse.
コンプライアンス情報
Compliance status is not stated in the manufacturer product page excerpt and should be confirmed from the ordering information and material declaration for the exact part.