Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1958-IBZ50-A2T, 32-bit MCU, 50 MHz, 256 KB Flash, 64 KB SRAM, 52 I/O, 108-BGA, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Series | Stellaris® ARM® Cortex®-M3S 1000 |
| Mounting type | 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 | I²C, IrDA, Microwire, SPI, SSI, UART/USART |
| Number of i (O) | 52 |
| Core processor | ARM® Cortex®-M3 |
| Case | 108-LFBGA |
| Data converters | A/D 8x10b |
| Program memory size | 256KB (256K x 8) |
The on-chip data converters (8-channel 10-bit ADC) and integrated peripherals — brown-out detect, POR, PWM, and watchdog timer — reduce external component count on a motor-drive or power-supply control board.
The LM3S1958-IBZ50-A2T carries an NRND (Not Recommended for New Designs) status. It remains available for existing production BOMs through the independent distribution channel.
Yes, the LM3S1958-IBZ50-A2T is designated NRND (Not Recommended for New Designs) by Texas Instruments. It is not fully discontinued, but TI recommends against using it in new projects. Existing production BOMs can still be filled through independent distribution.
No official TI successor order code is listed for this part. For a current-production replacement, you would need to evaluate TI's TM4C12x or TM4C12x family devices, which are pin-compatible with many Stellaris footprints and operate at similar supply voltages. Check the package (108-BGA, 10x10 mm) and supply range (2.25 V to 2.75 V) when cross-referencing.
The LM3S1958-IBZ50-A2T is rated for a 50 MHz core clock on the ARM Cortex-M3 processor.