The LC72P366 is a single-chip PLL-plus-controller onetime programmable PROM microcontroller that corresponds to the Sanyo LC72358N, LC72362N, and LC72366. The LC72P366 has the same package and pin assignment as the LC72358N, LC72362N, and LC72366 mask ROM versions, and provides 32 KB of on-chip PROM, organized as 16k words by 16 bits. The LC72P366 can prove useful in reducing the startup times for initial production runs and for reducing the switchover time when end-product specifications change.