Texas Instruments Stellaris® ARM® Cortex®-M3S 300 series, LM3S308-IQN25-C2T, 32-Bit Single-Core MCU, 25MHz, 16KB Flash, 4K x 8 RAM, 48-LQFP, -40°C~85°C.
| 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~85°C(TA) |
| Speed | 25MHz |
| Package | Tape & Reel (TR) |
| 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) | 28 |
| Core processor | ARM® Cortex®-M3 |
| Case | 48-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 16KB (16K x 8) |
It runs at 25 MHz with 16 KB of Flash and 4K x 8 of RAM — enough for a sensor hub, a motor commutation sequencer, or a protocol bridge that doesn't need a heavy OS. The 48-LQFP package (7x7 mm body) keeps the board area tight, and the 28 available I/O give room for a keypad, a small display, or a handful of discrete signals.
The peripheral list covers the basics: I²C, SPI, SSI, Microwire, and UART/USART for serial communication, plus an 8-channel 10-bit ADC for analog inputs.
Yes, the LM3S308-IQN25-C2T is listed as obsolete. It is no longer manufactured by Texas Instruments. It can be sourced through independent distribution against an RFQ.
For new designs, consider a current-production ARM Cortex-M3 or Cortex-M4 MCU in a 48-LQFP package with comparable Flash and RAM. For legacy BOM lines, the LM3S308-IQN25-C2T is available through surplus channels; we can quote it to order.
We source the LM3S308-IQN25-C2T through independent distribution.