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User’s Manual U12978EJ3V0UD
190
CHAPTER 14
µ
µµ
µ
PD78F9801
The
µ
PD78F9801 is a product that substitutes flash memory for the internal ROM of the mask ROM version. The
differences between the
µ
PD78F9801 and the mask ROM versions are shown in Table 14-1.
Table 14-1. Differences Between
µ
µµ
µ
PD78F9801 and Mask ROM Versions
Item Flash Memory Version Mask ROM Version
µ
PD78F9801
µ
PD789800
Internal memory ROM 16 KB (Flash memory) 8 KB
High-speed RAM 256 bytes
IC pin Not provided Provided
V
PP
pin Provided Not provided
Electrical specifications Refer to
CHAPTER 16 ELECTRICAL SPECIFICATIONS
.
Caution There are differences in noise immunity and noise radiation between the flash memory and
mask ROM versions. When pre-producing an application set with the flash memory version
and then mass-producing it with the mask ROM version, be sure to conduct sufficient
evaluations for the commercial samples (not engineering samples) of the mask ROM version.