Texas Instruments Stellaris® ARM® Cortex®-M3S 800 series LM3S815-IQN50-C2, 32-Bit Single-Core MCU, 50 MHz, 64 KB Flash, 8K x 8 RAM, 34 I/O, I²C/SPI/SSI/UART, 2x10b ADC, -40°C~85°C, 48-LQFP.
| 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 | I²C, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 34 |
| Core processor | ARM® Cortex®-M3 |
| Case | 48-LQFP |
| Data converters | A/D 2x10b |
| Program memory size | 64KB (64K x 8) |
The Texas Instruments LM3S815-IQN50-C2 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris® 800 series, clocked at 50 MHz. It carries 64 KB of Flash and 8 KB of RAM, 34 GPIOs, and a 2-channel 10-bit ADC.
Texas Instruments has not published a final EOL notice for this specific variant, but the NRND flag means the window for last-time-buy is open now.
The two 10-bit ADC channels handle analog feedback from a potentiometer or a current-sense resistor.
The LM3S815-IQN50-C2 is NRND (Not Recommended for New Designs). It is not formally discontinued, but TI recommends against using it in new designs. It can be sourced to order against an RFQ through independent distribution.
Texas Instruments has not published a single direct-replacement order code for this part. The pin-compatible LM3S811 is the closest sibling in the same Stellaris family. For a Cortex-M4F upgrade, evaluate the TM4C123 series.
Yes, the LM3S811 is pin-compatible with the LM3S815 in the same 48-LQFP package. The LM3S811 has less Flash (16 KB vs 64 KB) and fewer GPIOs, so a firmware migration is needed.
The listed core speed is 50 MHz.