Texas Instruments Stellaris® ARM® Cortex®-M3S 8000 series LM3S8933-EQC50-A2, 32-Bit Single-Core MCU, 50MHz, 256KB Flash, 64K x 8 SRAM, 100-LQFP, -40°C~105°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 8000 |
| 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 | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 36 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 4x10b |
| Program memory size | 256KB (256K x 8) |
The LM3S8933-EQC50-A2: The ARM Cortex-M3 core runs at 50 MHz. The 36 GPIOs and 4-channel 10-bit ADC handle local sensor inputs and actuator outputs.
Texas Instruments no longer manufactures this device in volume. For existing production, last-time-buy or surplus-channel sourcing is the path forward.
Texas Instruments has not published a direct pin-compatible replacement for the LM3S8933-EQC50-A2 in the Stellaris family. For new designs, consider the TM4C series (Cortex-M4F) as a functional upgrade path, but verify pin compatibility and peripheral differences against your schematic.
The LM3S8933-EQC50-A2 is rated for a 50 MHz core clock. That is the maximum CPU frequency supported by the internal PLL and flash controller with appropriate wait states.