Texas Instruments Stellaris® ARM® Cortex®-M3S 2000 series, LM3S2637-EQC50-A2, 32-Bit Single-Core MCU, 50MHz, 128KB Flash, 32K x 8 RAM, CANbus/I²C/SPI/UART, 46 I/O, 100-LQFP, -40°C~105°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 2000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.25V ~ 2.75V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 50MHz |
| Package | Tray |
| RAM size | 32K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 46 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 4x10b |
| Program memory size | 128KB (128K x 8) |
The LM3S2637-EQC50-A2: With 46 general-purpose I/O lines and an internal oscillator, this part targets embedded control applications in industrial automation, motor drives, and networked sensor nodes that require CAN connectivity.
Buyers should verify date code and condition (new original, reflowed, or tested) with the supplier before adding the part to a BOM line.
No official replacement order code is published by Texas Instruments for the LM3S2637-EQC50-A2. A pin-compatible alternative within the Stellaris family may exist, but the lifecycle record does not name one. For new designs, consider current-generation Cortex-M3 or Cortex-M4 MCUs from TI or other vendors that offer similar peripheral integration and supply voltage.