NEC 78K0S/KB1+ User Manual page 21

(2) Non-port pins
Pin Name I/O
INTP0 Input
INTP1
INTP2
INTP3
RxD6 Input
TxD6 Output
TI000 Input
TI010
TO00 Output
TOH1 Output
ANI0 to ANI3 Input
−
AV
REF
−
AV
SS
Note
RESET Input
Note
X1 Input
−
Note
X2
−
V
DD
−
V
SS
Note For settings of alternate function, refer to CHAPTER 18 OPTION BYTE.
Caution The P121/X1 and P122/X2 pins are pulled down during reset.
CHAPTER 2 PIN FUNCTIONS
Function
External interrupt input for which the valid edge (rising edge,
falling edge, or both rising and falling edges) can be specified
Serial data input for asynchronous serial interface
Serial data output for asynchronous serial interface
External count clock input to 16-bit timer/event counter 00.
Capture trigger input to capture registers (CR000 and CR010) of
16-bit timer/event counter 00
Capture trigger input to capture register (CR000) of 16-bit
timer/event counter 00
16-bit timer/event counter 00 output
8-bit timer H1 output
Analog input of A/D converter
Reference voltage of A/D converter
A/D converter ground potential. Make the same potential as
V .
SS
System reset input
Connection of crystal/ceramic resonator for system clock
oscillation.
External clock input
Connection of crystal/ceramic resonator for system clock
oscillation.
Positive power supply
Ground potential
User's Manual U17446EJ3V1UD
After Reset Alternate-
Function Pin
Input P30/TI000
P43/TxD6
P31/TI010/TO00
P41
Input P44
Input P43/INTP1
Input P30/INTP0
P31/TO00/INTP2
Input P31/TI010/INTP2
Input P42
Input P20 to P23
− −
− −
−
Note
P34
−
Note
P121
−
Note
P122
− −
− −
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