M16C28 Datasheet, PDF (393/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/28 Group (M16C/28, M16C/28B)
20. Precautions
20.12 Electric Characteristic Differences Between Mask ROM and
Flash Memory Version
Flash memory version and mask ROM version may have different characteristics, operating margin, noise
tolerated dose, noise width dose in electrical characteristics due to internal ROM, different layout pattern,
etc. When switching to the mask ROM version, conduct equivalent tests as system evaluation tests con-
ducted in the flash memory version.
Rev. 2.00 Jan. 31, 2007 ^{page 373} of 385
REJ09B0047-0200