STMicroelectronics STM32L431CBY6TR
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $8.26 | $8.26 |
| 15+ | $1.90 | $28.50 |
| 25+ | $1.86 | $46.50 |
| 50+ | $1.76 | $88.00 |
| 100+ | $1.55 | $155.00 |
| N+ | $0.31 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | STMicroelectronics |
| Product Series | STM32L4 |
| Packaging | Tape & Reel (TR) | NULL |
| Core Processor | ARM® Cortex®-M4 |
| Core Size | 32-Bit Single-Core |
| Speed | 80MHz |
| Connectivity | CANbus, I2C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, PWM, WDT |
| Number of I/O | 39 |
| Program Memory Size | 128KB (128K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 64K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 3.6V |
| Data Converters | A/D 10x12b; D/A 2x12b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 49-WLCSP (3.14x3.13) |
| Package / Case | 49-UFBGA, WLCSP |
| ROHS |  |
The STM32L431CBY6TR is an ultra-low-power 32-bit microcontroller from STMicroelectronics, featuring an ARM Cortex-M4 core with FPU at 80MHz. It offers 128KB of flash and 64KB of SRAM in a compact 49-UFBGA package. Operating from 1.71V to 3.6V, it includes brown-out detection, DMA, PWM, and WDT. This MCU is optimized for battery-powered and space-constrained applications requiring high computational performance.
- ARM Cortex-M4 with FPU accelerates mathematical operations, improving control loop and DSP performance.
- Ultra-low supply voltage (1.71V) enables direct operation from single-cell batteries, reducing power conversion losses.
- 64KB SRAM provides ample buffer for complex applications and real-time data processing.
- WLCSP package minimizes PCB footprint, ideal for compact wearable and IoT devices.
Wearable Health Monitors
The Cortex-M4 with FPU at 80MHz processes biosignals like ECG and PPG in real-time, while the 1.71V minimum supply extends battery life in smartwatches.
Smart Home Hubs
With 64KB RAM and multiple communication peripherals, it can manage Zigbee/Thread protocols and local automation rules in a central hub.
Portable Instrumentation
The WLCSP package and low-power modes make it suitable for handheld multimeters and oscilloscopes, providing high-speed ADC sampling and data logging.
Industrial Sensor Interfaces
Its DMA and PWM capabilities enable precise sensor excitation and data acquisition in pressure or flow transmitters, operating reliably in -40°C to 85°C environments.
Consumer Robotics
The FPU accelerates PID control loops for small robots, while brown-out detection ensures safe shutdown during battery voltage dips.
Energy Harvesting Devices
With a 1.71V threshold, it can operate directly from a single solar cell or TEG, enabling maintenance-free wireless sensors.
- Q: What core does the STM32L431CBY6TR use?
- A: It uses the ARM Cortex-M4 core with FPU, running at up to 80MHz for efficient signal processing.
- Q: What is the supply voltage range?
- A: It operates from 1.71V to 3.6V, supporting low-power battery applications.
- Q: How much flash and RAM does it have?
- A: It provides 128KB of flash memory and 64KB of SRAM, suitable for complex firmware.
- Q: What package is this variant?
- A: It comes in a 49-UFBGA (WLCSP) package, ideal for miniaturized PCB designs.
STM32L431CBY6TR.pdf
- Q: What core does the STM32L431CBY6TR use?
- A: It uses the ARM Cortex-M4 core with FPU, running at up to 80MHz for efficient signal processing.
- Q: What is the supply voltage range?
- A: It operates from 1.71V to 3.6V, supporting low-power battery applications.
- Q: How much flash and RAM does it have?
- A: It provides 128KB of flash memory and 64KB of SRAM, suitable for complex firmware.
- Q: What package is this variant?
- A: It comes in a 49-UFBGA (WLCSP) package, ideal for miniaturized PCB designs.
