Texas Instruments Stellaris® ARM® Cortex®-M3S 800 series LM3S811-EGZ50-C2T, 32-Bit Single-Core MCU, 50MHz, 64KB (64K x 8) FLASH, 8K x 8 RAM, 32 I/O, 48-VFQFN Exposed Pad, -40°C~105°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 800 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 3V ~ 3.6V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 50MHz |
| Package | Tape & Reel (TR) |
| RAM size | 8K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 32 |
| Core processor | ARM® Cortex®-M3 |
| Case | 48-VFQFN Exposed Pad |
| Data converters | A/D 4x10b |
| Program memory size | 64KB (64K x 8) |
The 48-VQFN package (7x7 mm) with an exposed pad keeps the board footprint tight, but that pad needs a solid via-stitched thermal land on the PCB to pull heat out of the die at extended temperatures.
A 4-channel 10-bit ADC is integrated, so a few analog sensor inputs don't need an external converter.
For dual-sourcing or a drop-in replacement, review the Stellaris LM3S family pin-compatible density options — the base product number LM3S811 shares the same footprint with other Flash/RAM variants in the series.