Texas Instruments Stellaris LM3S5D91-IQC80-A1, ARM Cortex-M3 32-bit MCU, 80 MHz, 512 KB Flash, 96 KB RAM, dual CAN, USB OTG, 72 I/O, 100-LQFP, -40°C to 85°C, Tray.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 5000 |
| 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 | 80MHz |
| Package | Tray |
| RAM size | 96K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, Microwire, QEI, SPI, SSI, UART/USART, USB OTG |
| Number of i (O) | 72 |
| Core processor | ARM® Cortex®-M3 |
| Case | 100-LQFP |
| Data converters | A/D 16x12b |
| Program memory size | 512KB (512K x 8) |
80 MHz core clock on this Cortex-M3. 96 KB RAM supports buffering for CAN and USB traffic.
Texas Instruments has marked the LM3S5D91-IQC80-A1 as obsolete. No official TI successor listed.
Yes, Texas Instruments has marked the LM3S5D91-IQC80-A1 as obsolete. No official successor part number is listed. For existing designs, the part can be sourced through independent distribution on an RFQ basis.
No official TI replacement order code is documented in the available records. A pin-compatible alternative within the Stellaris family may exist, but it is not confirmed here. For new designs, consider migrating to a current TI Cortex-M4 or Cortex-M0+ MCU with similar peripheral set and 100-LQFP package.
This obsolete part is available through independent distribution channels. Submit an RFQ for current pricing and availability — quotes are confirmed at order time.
The core is rated at 80 MHz, based on the ARM Cortex-M3 architecture.
No official cross-reference to another TI MCU is documented in the available records. The part is obsolete; verify pin compatibility with any potential substitute before ordering.