Texas Instruments Stellaris ARM Cortex-M3S 9000 series MCU, LM3S9L71-IBZ80-C3, 32-bit single-core, 80MHz, 128KB Flash, 48K x 8 RAM, 108-BGA, industrial temperature -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 9000 |
| 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 | Tray |
| RAM size | 48K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, Ethernet, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG |
| Number of i (O) | 72 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 16x10b |
| Program memory size | 128KB (128K x 8) |
The LM3S9L71-IBZ80-C3 is a 32-bit ARM Cortex-M3 MCU from the Stellaris 9000 series, clocked at 80 MHz with 128 KB of Flash and 48 KB of SRAM. It integrates CAN, Ethernet, USB OTG, I²C, SPI, UART, and a 16-channel 10-bit ADC.
The 80 MHz core speed supports a real-time Ethernet stack alongside a control loop and CAN messaging. The 48 KB SRAM buffers two Ethernet frames plus a data log.
The 72 GPIOs and quadrature encoder interface suit motor-drive feedback.
No official pin-compatible replacement is listed in the lifecycle record. For new designs, consider a current-production Cortex-M3 or M4 MCU with CAN and Ethernet from TI's TM4C series or a comparable vendor.
The MCU is rated for -40°C to 85°C, suitable for industrial and outdoor environments.