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User’s Manual U15075EJ2V1UD
304
CHAPTER 18 MASK OPTIONS
The mask ROM versions of the
µ
PD789426, 789436, 789446, and 789456 Subseries have the following mask
options.
•
Pull-up resistor
The connection of on-chip pull-up resistors for port 5 (I/O port) can be switched in 1-bit units.
<1> Pull-up resistor is connected
<2> Pull-up resistor is not connected
•
RC oscillation
RC oscillation is selectable for the main system clock.
<1> Crystal/ceramic oscillation
<2> RC oscillation
Caution The flash memory products do not have mask options.