Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series, LM3S1138-EQC50-A2T, 32-Bit Single-Core MCU, 50 MHz, 64KB (64K x 8) FLASH, 16K x 8 RAM, 46 I/O, 100-LQFP, -40°C~105°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 1000 |
| 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 | Tape & Reel (TR) |
| RAM size | 16K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 46 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 64KB (64K x 8) |
The LM3S1138-EQC50-A2T is a 32-bit ARM Cortex-M3 MCU from the Stellaris® 1000 series, clocked at 50 MHz with 64 KB of Flash and 16K x 8 of RAM.
The 8-channel 10-bit ADC samples at the internal oscillator rate; if you need higher precision or faster conversion, an external ADC over SPI is the usual workaround.
The core runs at 50 MHz — that is the maximum clock for the ARM Cortex-M3 on this device.
Rated for -40°C to 105°C (TA), which covers industrial and automotive under-hood environments.