CHAPTER 2 PIN FUNCTION
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2.2.8 P100 to P107 (Port 10)
These are 8-bit output dedicated ports. In addition to their use as an output port, they also have FIP controller/
driver digit/segment outputs and segment output functions.
P100 to P105 can drive LEDs directly.
The following operating modes can be specified bit-wise.
(1) Port mode
Port 10 functions as an 8-bit output dedicated port. P100 to P107 are P-ch open-drain outputs. Mask ROM version
can contain pull-down resistors with the mask option.
The
μ
PD78P048A contains pull-down resistors in P100 to P105.
(2) Control mode
P100 to P105 function as digit/segment output pins for FIP controller/driver (FIP10 to FIP15). P106 and P107
function as segment output pins for FIP controller/driver (FIP16, FIP17).
2.2.9 P110 to P117 (Port 11)
These are 8-bit input/output ports. Besides serving as input/output ports, they function as a segment output for
FIP controller/driver.
P110 to P117 can drive LEDs directly.
The following operating modes can be specified bit-wise.
(1) Port mode
These ports function as 8-bit input/output ports. P110 to P117 are P-ch open-drain outputs. Mask ROM version
can contain pull-down resistors with the mask option.
(2) Control mode
These ports function as segment output pins for FIP controller/driver (FIP18 to FIP25).
2.2.10 P120 to P127 (Port 12)
These are 8-bit input/output ports. Besides serving as input/output ports, they are used for segment output pins
for FIP controller/driver.
P120 to P127 can drive LEDs directly.
The following operating modes can be specified bit-wise.
(1) Port mode
These ports function as 8-bit input/output ports. P120 to P127 are P-ch open-drain. Mask ROM version can
contain pull-down resistors with the mask option.
(2) Control mode
These ports function as segment output pins for FIP controller/driver (FIP26 to FIP33).
2.2.11 AV
REF
The A/D converter's reference voltage should be input from this pin.
2.2.12 AV
DD
This pin supplies power for A/D converter operations dedicatedly. Always apply to this pin the same voltage as
the V
DD
pin voltage even if the A/D converter is not used.