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µ
The
PD78F9436 is a version with the internal ROM of the
µ
memory and the
PD78F9456 is a version with the internal ROM of the
with flash memory. The differences between the
Table 17-1.
Table 17-1. Differences Between
Part Number
Item
Internal
ROM
memory
High-speed RAM
LCD display RAM 5 × 4 bits
IC pin
V
pin
PP
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.
294
µ
CHAPTER 17
µ
PD78F9436, 78F9456 and the mask ROM versions are shown in
µ
PD78F9436, 78F9456 and Mask ROM Versions
Flash Memory Version
µ
µ
PD78F9436
PD78F9456
12 KB
16 KB
512 bytes
15 × 4 bits
Not provided
Provided
Refer to CHAPTER 20 ELECTRICAL SPECIFICATIONS
User's Manual U15075EJ2V1UD
PD78F9436, 78F9456
µ
PD789426 and 789436 Subseries replaced with flash
µ
PD789446 and 789456 Subseries replaced
Mask ROM Version
µ
µ
PD789425,
PD789426,
789435
789436
12 KB
16 KB
5 × 4 bits
Provided
Not provided
µ
µ
PD789445,
PD789446,
789455
789456
12 KB
16 KB
15 × 4 bits
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