Port Functions ( Pd78054 Subseries) - NEC PD78052 User Manual

Pin Name
P00
P01
P02
P03 Port 0.
P04 8-bit input/output port.
P05
P06
P07
Port 1.
8-bit input/output port.
P10 to P17
Input/output mode can be specified in 1-bit units.
When used as an input port, an on-chip pull-up resistor can be used by software.
P20
P21
P22 Port 2.
P23 8-bit input/output port.
P24 Input/output mode can be specified in 1-bit units.
P25 When used as an input port, an on-chip pull-up resistor can be used by software.
P26
P27
P30
P31
P32 Port 3.
P33 8-bit input/output port.
P34 Input/output mode can be specified in 1-bit units.
P35 When used as an input port, an on-chip pull-up resistor can be used by software.
P36
P37
Port 4.
8-bit input/output port.
P40 to P47 Input/output mode can be specified in 8-bit units.
When used as an input port, an on-chip pull-up resistor can be used by software.
Test input flag (KRIF) is set to 1 by falling edge detection.
Port 5.
8-bit input/output port.
P50 to P57 LED can be driven directly.
Input/output mode can be specified in 1-bit units.
When used as an input port, an on-chip pull-up resistor can be used by software.
130
CHAPTER 6 PORT FUNCTIONS
Table 6-1. Port Functions ( PD78054 subseries) (1/2)
Function
Input only
Input/output mode can be specified in 1-bit
units.
When used as an input port, an on-chip
pull-up resistor can be used by software.
Input only
Alternate Function
INTP0/TI00
INTP1/TI01
INTP2
INTP3
INTP4
INTP5
INTP6
XT1
ANI0 to ANI7
SI1
SO1
SCK1
STB
BUSY
SI0/SB0
SO0/SB1
SCK0
TO0
TO1
TO2
TI1
TI2
PCL
BUZ
—
AD0 to AD7
A8 to A15