ARM9 MCU with 125 MHz core and 512 KB Flash
The NXP LPC2925FBD100,551 is a 16/32-bit ARM9-based microcontroller from the LPC2900 series, clocked at 125 MHz. It integrates 512 KB of Flash program memory, 40K x 8 of SRAM, and 16K x 8 of EEPROM — enough firmware and data space for a multi-protocol industrial node or a motor-drive control loop with fieldbus connectivity. The 100-pin LQFP package (14x14 mm) provides 60 general-purpose I/O lines, plus dedicated interfaces for CAN, I²C, LIN, SPI, UART/USART, and USB, making it a single-chip fit for distributed control and HMI front-ends in factory automation and building management systems.
The ARM9 core runs at 125 MHz.
NXP has marked the LPC2925FBD100,551 as obsolete. For BOM lines already qualified to this footprint, the practical path is surplus and broker-channel procurement. If you are freezing a new design, consider a pin-compatible ARM9 alternative in the LPC2900 family with an active lifecycle status.