Texas Instruments Stellaris® ARM® Cortex®-M3S 300 series, 32-bit single-core MCU, 25MHz, 16KB Flash, 4KB SRAM, 3V–3.6V, 48-LQFP (7×7mm), -40°C to 105°C, I²C/SPI/UART/SSI, 4×10b ADC, internal oscillator.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 300 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 3V ~ 3.6V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 25MHz |
| Package | Tray |
| RAM size | 4K 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-LQFP |
| Data converters | A/D 4x10b |
| Program memory size | 16KB (16K x 8) |
The LM3S316-EQN25-C2, a Stellaris ARM Cortex-M3S 300 series 32-bit single-core MCU, runs at 25MHz with 16KB Flash and 4KB SRAM. The 48-LQFP package with a 7×7mm body keeps the PCB footprint tight, and the 32 general-purpose I/O pins offer enough headroom for a modest peripheral set without a larger package.
TI's Tiva C-Series MCUs are the branded successor to the Stellaris family, but pin compatibility is not guaranteed across the family — a schematic and layout review against the target Tiva variant is required before substituting. No official second-source or pin-compatible cross-reference is listed for the LM3S316-EQN25-C2 in this ledger.