Chapter 13 Μ Μ Μ Μ Pd78F9026A - NEC mPD789026 Subseries User Manual

The µ PD78F9026A is a version with an internal ROM of the mask ROM models replaced with a flash memory.
The differences between the µ PD78F9026A and the mask ROM models are shown in Table 13-1.
Table 13-1. Differences between µ µ µ µ PD78F9026A and Mask ROM Models
Item
Internal ROM
memory
Internal high-
speed RAM
IC pin
V pin
PP
Electric characteristics
Caution The flash memory and masked ROM products have different noise immunity and noise
radiation characteristics. Do not use ES products for evaluation when considering switching
from flash memory products to those using masked ROM upon the transition from
preproduction to mass-production. CS products (masked ROM products) should be used in
this case.
CHAPTER 13 µ µ µ µ PD78F9026A
Flash Memory Model
µ PD78F9026A µ PD789022
16 Kbytes 4 Kbytes
(flash memory)
512 bytes 256 bytes
Not provided Provided
Provided Not provided
Refer to Data Sheet.
User's Manual U11919EJ3V0UM00
Mask ROM Model
µ PD789024 µ PD789025
8 Kbytes 12 Kbytes
512 bytes
µ PD789026
16 Kbytes
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