Hello.
Thank you for your interest in NXP.
Unfortunately, NXP does not offer a drop‑in, pin‑compatible successor for the LPC900 series.
The P89LPC935FDH is officially discontinued, and NXP lists no direct replacement.
However, the closest device with minimal firmware porting effort and reasonable hardware modification is:
NXP LPC11xx (LPC1100) Series - LPC111x
LPC1100 Series: Scalable Entry-Level Microcontrollers (MCUs) Based on Arm Cortex-M0+/M0 Cores | NXP ...
- Small packages (TSSOP‑28, QFN‑28)
- Low‑power, inexpensive
- Peripherals comparable or superior (ADC, timers, I2C, SPI, UART)
- Easy to port 8051‑style logic into ARM Cortex‑M0
- NXP’s intended migration path from P89LPC → LPC11xx
LPC1112 / LPC1113 in TSSOP‑28 or HVQFN‑33 packages
- ARM Cortex‑M0 (fast, low-power)
- SPI, I2C, UART – all present
- 10‑bit ADC (LPC1113/14)
- GPIO count similar to LPC900
- Small packages (down to 5×5 mm QFN)
Best Regards,
