TI LM3S8538-IBZ50-A2T Stellaris ARM Cortex-M3 MCU 50MHz 96KB Flash
Texas Instruments LM3S8538-IBZ50-A2T Stellaris ARM Cortex-M3S 8000 series, 32-bit single-core at 50MHz, 96KB FLASH / 64KB SRAM, 108-LFBGA, Ethernet + CANbus, 36 I/O, -40 to 85 °C automotive-grade, 2.25–2.75 V supply, tape and reel.
Specifications
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 8000 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.25V ~ 2.75V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 50MHz |
| Package | Tape & Reel (TR) |
| RAM size | 64K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | CANbus, Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 36 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 8x10b |
| Program memory size | 96KB (96K x 8) |
Frequently asked questions
What temperature grade does the A2T suffix denote?
The A2T automotive-grade suffix on this part places it in the automotive temperature lot-acceptance flow at -40 to 85 °C operating range. This is a tighter qualification bar than a standard industrial (-40 to 85 °C commercial) part and is the reason this part survives in legacy industrial automation builds where automotive-qualified bill of material discipline applies.
What connectivity does the LM3S8538-IBZ50-A2T offer versus a same-footprint peer without Ethernet?
The LM3S8538 integrates both Ethernet MAC (RMII interface) and CANbus alongside the standard UART/USART, I²C, SPI, SSI, and IrDA peripheral set — the Ethernet MAC is the differentiator that makes this part, not the 6638 variant, the correct choice for a networked embedded module. Both share the same 108-LFBGA package and 36 I/O.