NEC PD78F9488 - Manual (Page 331)

User’s Manual U15331EJ4V1UD
331
CHAPTER 20 MASK OPTIONS
The µPD789488 and 789489 have the following mask options.
• Pin function
The segment pins of the LCD and port 7 (input port) can be selected in 1-bit units.
<1> S (16
+ n)
<2> P7n (n = 0 to 3)
The segment pins of the LCD and port 8 (I/O port) can be selected in 1-bit units.
<1> S (20
+ m)
<2> P8m (m = 0 to 7)
• Subsystem clock ×4 multiplication circuit
The use of a circuit to multiply the subsystem clock (32.768 kHz) by 4 (131 kHz) is selected.
<1>
×4 multiplication circuit is used
<2> ×4 multiplication circuit is not used
• 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
Caution The flash memory products ( µPD78F9488 and 78F9489) do not have mask options.