What this part is and where it lands
The NXP LPC1810FET100,551 is a 32-bit ARM Cortex-M3 microcontroller from the LPC18xx series, clocked at 150 MHz. It carries 136K x 8 of on-chip RAM but is ROMless — program code must reside in external Flash or ROM accessed via the EBI/EMI or serial interfaces. With 64 GPIOs and a peripheral set that includes CAN, I²C, SPI, UART, and motor-control PWM, this part targets industrial control, motor-drive, and communications gateway applications that need a mid-range Cortex-M3 with flexible external memory and fieldbus connectivity. Operating from 2 V to 3.6 V over -40°C to 85°C, it fits industrial and outdoor telecom enclosures without active cooling.
150 MHz Cortex-M3 — what it means for the control loop
The 150 MHz core delivers single-cycle multiply and a 3-stage pipeline, which handles a typical field-oriented motor-control loop or a CAN gateway stack without saturating the CPU. The ROMless architecture means the designer chooses the external boot device — serial NOR Flash for small-footprint code or parallel Flash/SRAM via the EBI for larger firmware images. The 136K x 8 RAM is enough for two CAN message buffers, a modest RTOS heap, and a few KB of stack; anything beyond that pushes the application into external memory.
Connectivity and peripherals for industrial comms
The LPC1810FET100,551 integrates CAN, EBI/EMI, I²C, SPI, Microwire, SSI, SSP, and UART/USART — enough to bridge a CAN fieldbus to a UART debug port or drive a parallel LCD via the EBI. The motor-control PWM and quadrature encoder interface (via the I²S and PWM blocks) suit it for servo and BLDC drive stages. Brown-out detect, POR, and a watchdog timer are on-chip, reducing external supervisor IC count. The 100-TFBGA (9x9 mm) package saves board area but requires BGA reflow and X-ray inspection — not a hand-solder part.
Lifecycle and sourcing posture
The LPC1810FET100,551 carries an Active lifecycle status. This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time. No official second source or direct successor is listed in the evidence, so BOM planners should treat it as a sole-sourced line on the LPC18xx platform.