UPD78F0411GA-GAM-AX Datasheet, PDF (35/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 2 PIN FUNCTIONS
2.2.4 P40 (port 4)
P40 functions as a 1-bit I/O port. These pins also function as pins for key interrupt input and power supply voltage
for driving the LCD.
The following operation modes can be specified in 1-bit units.
(1) Port mode
P40 functions as a 1-bit I/O port. P40 can be set to input port or output port in 1-bit units using port mode register
4 (PM4). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 4 (PU4).
(2) Control mode
P40 functions as key interrupt input and power supply voltage for driving the LCD.
(a) KR0
This is the key interrupt input pins.
(b) VLC3
This is the power supply voltage pins for driving the LCD.
2.2.5 P100, P101 (port 10)
P100 and P101 function as a 2-bit I/O port. These pins also function as segment signal output pins for the LCD
controller/driver. Either I/O port function or segment signal output function can be selected using port function register
ALL (PFALL).
(1) Port mode
P100 and P101 function as a 2-bit I/O port. P100 and P101 can be set to input or output port in 1-bit units using
port mode register 10 (PM10). Use of an on-chip pull-up resistor can be specified by pull-up resistor option
register 10 (PU10).
(2) Control mode
P100 and P101 function as segment signal output for the LCD controller/driver.
(a) SEG4, SEG5
These pins are the segment signal output pins for the LCD controller/driver.
2.2.6 P112, P113 (port 11)
P112 and P113 function as a 2-bit I/O port. These pins also function as pins for segment signal output pins for the
LCD controller/driver and serial interface data I/O. Either I/O port function (other than segment signal output) or
segment signal output function can be selected using port function register ALL (PFALL).
(1) Port mode
P112 and P113 function as a 2-bit I/O port. P112 and P113 can be set to input or output port in 1-bit units using
port mode register 11 (PM11). Use of an on-chip pull-up resistor can be specified by pull-up resistor option
register 11 (PU11).
(2) Control mode
P112 and P113 function as segment signal output for the LCD controller/driver and serial interface data I/O.
User’s Manual U18698EJ1V0UD
33