Texas Instruments Stellaris ARM Cortex-M3S 1000 series LM3S1D21-IQC80-A2T, 32-bit single-core MCU, 80MHz, 512KB Flash, 96K x 8 RAM, 100-LQFP, -40°C 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)) | 1.235V ~ 1.365V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 80MHz |
| Package | Tape & Reel (TR) |
| RAM size | 96K 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 8x12b |
| Program memory size | 512KB (512K x 8) |
The 512 KB Flash gives you room for a full RTOS, communication stacks, and application code; the 96 KB SRAM supports moderate data buffering and stack depth. The eight-channel 12-bit ADC (8x12b) provides enough analog inputs for current-sense and position feedback in a three-phase motor drive.
For production or repair, the only channel is surplus inventory through independent distribution.
No official replacement part number is recorded. For new designs, consider a current-production Stellaris or Tiva C Series Cortex-M4 MCU from TI — verify pin-compatibility and peripheral mapping against your layout.
Yes. With an 80 MHz Cortex-M3, 512 KB Flash, 96 KB RAM, 8-channel 12-bit ADC, and PWM peripherals (listed as PWM in the peripheral set), it is well suited for sensorless or sensored motor control loops.