UPD78F0411GA-GAM-AX Datasheet, PDF (37/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 2 PIN FUNCTIONS
(1) Port mode
P140 to P143 function as a 4-bit I/O port. P140 to P143 can be set to input or output port in 1-bit units using port
mode register 14 (PM14). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 14
(PU14).
(2) Control mode
P140 to P143 function as segment signal output pins for the LCD controller/driver.
(a) SEG8 to SEG11
These pins are the segment signal output pins for the LCD controller/driver.
2.2.9 P150 to P153 (port 15)
P150 to P153 function as a 4-bit I/O port. These pins also function as pins for 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
P150 to P153 function as a 4-bit I/O port. P150 to P153 can be set to input or output port in 1-bit units using port
mode register 15 (PM15). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 15
(PU15).
(2) Control mode
P150 to P153 function as segment signal output for the LCD controller/driver.
(a) SEG12 to SEG15
These pins are the segment signal output pins for the LCD controller/driver.
2.2.10 AVREF (μPD78F041x only)
This is the 10-bit successive approximation type A/D converter reference voltage input pin and the positive power
supply pin of port 2.
When the A/D converter is not used, connect this pin directly to VDD^Note.
Note When one or more of the pins of port 2 is used as the digital port pins or for segment output, make AVREF
the same potential as VDD.
2.2.11 AVSS (μPD78F041x only)
This is the A/D converter ground potential pin. Even when the A/D converter is not used, always use this pin with
the same potential as the VSS pin.
2.2.12 COM0 to COM7
These pins are the common signal output pins for the LCD controller/driver.
2.2.13 VLC0 to VLC3
These pins are the power supply voltage pins for driving the LCD.
2.2.14 RESET
This is the active-low system reset input pin.
User’s Manual U18698EJ1V0UD
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