Texas Instruments Stellaris® ARM® Cortex®-M3S 600 series LM3S611-EGZ50-C2, 32-Bit Single-Core MCU, 50MHz, 32KB FLASH, 8K x 8 RAM, 32 I/O, I²C/Microwire/SPI/SSI/UART/USART, 4x10b ADC, -40°C~105°C, 48-VFQFN Exposed Pad.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 600 |
| Mounting type | 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 | Tray |
| 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 | 32KB (32K x 8) |
At 50 MHz, the Cortex-M3 executes single-cycle multiply and hardware divide, so a PID loop or Modbus frame parsing finishes in deterministic time. The 8 KB RAM is the tighter constraint here: a full TCP/IP stack will eat most of it, so this part is better suited for a dedicated UART-to-sensor bridge or a single-axis servo controller than a multi-protocol gateway.
Yes, the LM3S611-EGZ50-C2 is recorded as end-of-life (EOL). Production has stopped, and the part is available only through surplus or broker channels.