Datasheet

Section 19 Flash Memory (F-ZTAT Version)
Rev. 3.00 Mar 17, 2006 page 807 of 926
REJ09B0283-0300
19.13 Note on Switching from F-ZTAT Version to Masked ROM Version
Care is required if application software developed on the F-ZTAT version is used when the F-
ZTAT version is switched to the masked ROM version product.
If an address in which a register for the F-ZTAT version is present is read (see section 23.1,
Register Addresses (by functional module, in order of the corresponding section numbers)) in the
masked ROM version, an undefined value will be returned.
If application software developed on the F-ZTAT version is used in the masked ROM version
product, the state of the FWE pin cannot be judged. The program must be modified so that the part
of reprogramming (erasing/programming) the flash memory and the part of the RAM emulation
are not started.
Also, the mode pin of boot mode must not be set in the masked ROM version.
Note: This note is applied to all products in the F-ZTAT version and in the masked ROM
version of same Group with the different ROM size.