Vfd Controller/Driver Configuration - NEC mPD780208 Subseries User Manual

There are 53 display output pins. Of these, 40 pins, FIP13 to FIP52, have alternate port functions. These pins
are used as port pins when display stop is set using bits 4 to 7 (DIGS0 to DIGS3) of display mode register 1 (DSPM1).
Even when display is enabled, display output pins not used for outputting digit signals and segment signals can
be used as port pins.
Table 15-1. Relationship Between Display Output Pins and Port Pins
Display Pin Name
FIP13
to
FIP20
FIP21
to
FIP28
FIP29
to
FIP36
FIP37
to
FIP44
FIP45
to
FIP52

15.2 VFD Controller/Driver Configuration

The VFD controller/driver consists of the following hardware.
Display output
Control registers
CHAPTER 15 VFD CONTROLLER/DRIVER
Alternate Port Name
P80
to
P87
P90
to
P97
P100
to
P107
P110
to
P117
P120
to
P127
Table 15-2. VFD Controller/Driver Configuration
Item
53 pins (segments: 9 to 40, digits: 2 to 16)
Display mode register 0 (DSPM0)
Display mode register 1 (DSPM1)
Display mode register 2 (DSPM2)
User's Manual U11302EJ4V0UM
I/O
For output port
For output port
I/O port
I/O port
I/O port
Configuration
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