Texas Instruments Stellaris® ARM® Cortex®-M3S 800 LM3S818-IGZ50-C2, 32-Bit Single-Core MCU, 50MHz, 64KB FLASH, 8K x 8 RAM, 30 I/O, 48-VFQFN Exposed Pad, -40°C~85°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~85°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 | Microwire, QEI, SPI, SSI, UART/USART |
| Number of i (O) | 30 |
| Core processor | ARM® Cortex®-M3 |
| Case | 48-VFQFN Exposed Pad |
| Data converters | A/D 6x10b |
| Program memory size | 64KB (64K x 8) |
The LM3S818-IGZ50-C2: Connectivity covers Microwire, QEI, SPI, SSI, and UART/USART, plus a 6-channel 10-bit ADC. The 30 available I/O pins in the 48-VQFN package leave room for local control logic.
Housed in a 48-VFQFN with an exposed thermal pad (supplier package 48-VQFN, 7x7 mm), the part relies on the pad for heat sinking. The layout engineer should stitch vias under the pad to the ground plane.
The core runs at 50 MHz. That is the maximum CPU clock; the flash wait state configuration in the system control registers must be set correctly when operating above a certain frequency to avoid bus faults.