Texas Instruments Stellaris® ARM® Cortex®-M3S 5000 series LM3S5C31-IQC80-A1T, 32-bit MCU, 80 MHz, 512 KB Flash, 64 KB SRAM, 100-LQFP, -40°C to 85°C, industrial temperature range.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 5000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 3V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 80MHz |
| Package | Tape & Reel (TR) |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB |
| Number of i (O) | 67 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 16x12b |
| Program memory size | 512KB (512K x 8) |
The 100-pin LQFP package exposes 67 GPIOs and a 16-channel 12-bit ADC. This part was designed for industrial control, motor drives, and networked embedded systems where the combination of a mature ARM core, generous memory, and rich connectivity matters.
Any BOM line using this MCU should plan for a one-time procurement window or qualify a replacement before inventory runs dry.
No official replacement part number is provided in the lifecycle record. Engineers evaluating a drop-in should look at pin-compatible Stellaris family members with similar memory and peripheral sets, but no direct cross-reference is documented. A full BOM review and firmware port may be required.