SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
This section details the architecture and configuration of the MEMSS for ROM. Each CPU has dedicated ROM. Program and data accesses are supported and are one wait state. Multiple ROM banks are interleaved to form 256-bit words. ECC is implemented with a 64-bit granularity, which is the same as Flash. A prefetch buffer compensates for the one wait state latency. There is a local 256-bit dataline buffer that holds the last data read from ROM.
The following is the round-robin priority order: