Texas Instruments Stellaris ARM Cortex-M3S 1000 series 32-bit MCU, LM3S1R21-IQC80-C5T, 80 MHz, 256KB Flash, 48K x 8 RAM, 100-LQFP, -40 to 85°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 1000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.08V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 80MHz |
| Package | Tape & Reel (TR) |
| RAM size | 48K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 67 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 8x10b |
| Program memory size | 256KB (256K x 8) |
The Texas Instruments LM3S1R21-IQC80-C5T is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris 1000 series, running at 80 MHz. The 100-LQFP package gives you 67 I/Os.
80 MHz core clock. 48 KB RAM supports an RTOS heap and communication buffers.
The LM3S1R21 is in the Stellaris 1000 family with a 100-LQFP footprint. Another LM3S1xxx part with the same package and 80 MHz clock is a drop-in.
Any Stellaris LM3S1xxx part in the same 100-LQFP package with the -IQC80 suffix is pin-compatible. The exact Flash and RAM density you need determines the best match; we can help identify it during the RFQ process.
The core runs at 80 MHz.