What this PowerQUICC processor brings to the board
The NXP MPC859PCVR100A is a 32-bit PowerQUICC communications processor built around the MPC8xx core, clocked at 100 MHz. It integrates a DRAM controller, a dedicated Communications Processor Module (CPM) for protocol offload, and dual Ethernet MACs — one 10 Mbps and one 10/100 Mbps — making it a single-chip solution for routing, bridging, or industrial gateway designs that need a legacy 10 Mbps interface alongside a faster 10/100 Mbps link.
Dual Ethernet and protocol offload
The CPM coprocessor handles time-critical communications tasks independently of the main core, freeing the MPC8xx for application code. Additional serial interfaces include I²C, SPI, TDM, and UART/USART, plus PCMCIA and IrDA support — enough peripheral set for a compact access point or protocol converter.
Lifecycle and sourcing posture
The MPC859PCVR100A carries an active lifecycle status from NXP. That means no last-time-buy notice is in effect, and the part remains eligible for use in new-production BOMs. For a processor in the PowerQUICC family that has been in the field for years, active status is not a given — many siblings have moved to NRND or obsolescence.