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CHAPTER 2 PIN FUNCTIONS
User’s Manual U15798EJ2V0UD
2.2.9 P100 to P107 (Port 10)
These are 8-bit I/O ports. Besides serving as I/O ports, they function as segment signal output (for dynamic display)
of the LCD controller/driver. Either the I/O port or segment signal output function can be selected by setting the pin
function switching register 10 (PF10).
(1) Port mode
These ports function as 8-bit I/O ports. They can be specified as input or output ports in 1-bit units with port
mode register 10 (PM10).
(2) Control mode
These ports function as segment signal output pins (S28 to S35) (for dynamic display) of the LCD controller/driver.
2.2.10 P110 to P113 (Port 11)
These are 4-bit I/O ports. Besides serving as I/O ports, they function as segment signal output (for dynamic display)
of the LCD controller/driver. Either the I/O port or segment signal output function can be selected by setting the pin
function switching register 11 (PF11).
(1) Port mode
These ports function as 4-bit I/O ports. They can be specified as input or output ports in 1-bit units with port
mode register 11 (PM11).
(2) Control mode
These ports function as segment signal output pins (S36 to S39) (for dynamic display) of the LCD controller/driver.
2.2.11 AV
DD
This is the A/D converter analog power supply pin. Even when the A/D converter is not used, supply the same
potential as that of the V
DD0
or V
DD1
pin.
2.2.12 AV
SS
This is the ground potential pin of A/D converter. Always use the same potential as that of the V
SS0
or V
SS1
pin
even when an A/D converter is not used.
2.2.13 S0 to S39
Note
These are the segment signal output pins of the LCD controller/driver.
S0 to S11:
Static or dynamic display can be switched
S12 to S39: For dynamic display
Note
S12 to S19 and P80 to P87, S20 to S27 and P90 to P97, S28 to S35 and P100 to P107, and S36 to S39
and P110 to P113 function alternately. These functions can be switched to a port in 1-bit units by using
the pin function switching register.
2.2.14 COM0 to COM3
These are the common signal output pins (for dynamic display) of the LCD controller/driver.