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305
Preliminary User’s Manual U13420EJ2V0UM00
CHAPTER 21
µ
PD78F0066
The
µ
PD78F0066 is provided as the flash memory version of the
µ
PD780065 Subseries.
The
µ
PD78F0066 replaces the internal mask ROM of the
µ
PD780065 with flash memory to which a program can
be written, deleted and overwritten while mounted on the substrate. Table 21-1 lists the differences between the
µ
PD78F0066 and the mask ROM version.
Table 21-1. Differences between
µ
PD78F0066 and Mask ROM Version
Item
µ
PD78F0066
Mask ROM Version (
µ
PD780065)
Internal ROM configuration
Flash memory
Mask ROM
Internal ROM capacity
48 Kbytes
40 Kbytes
IC pin
None
Available
V
PP
pin
Available
None
Electrical specifications
Refer to data sheet of each product.
Caution
Flash memory versions and mask ROM versions differ in their noise immunity and noise
radiation. If replacing flash memory versions with mask ROM versions when changing from
test production to mass production, be sure to perform sufficient evaluation with CS versions
(not ES versions) of mask ROM versions.
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