NEC PD78055 Benutzerhandbuch
59
Input
Input/
output
CHAPTER 3 PIN FUNCTION (
µ
PD78054 Subseries)
3.1 Pin Function List
3.1.1 Normal operating mode pins
(1) Port pins (1/3)
Pin Name
Input/Output
Function
After Reset Alternate Function
P00
Input
Input only
Input
INTP0/TI00
P01
Input/output mode can be specified
INTP1/TI01
P02
in 1-bit units.
INTP2
P03
Input/
Port 0.
When used as an input port, an
INTP3
P04
output
8-bit input/output port.
on-chip pull-up resistor can be used
INTP4
P05
by software.
INTP5
P06
INTP6
P07
Note1
Input
Input only
Input
XT1
P10 to P17
Port 1.
8-bit input/output port.
Input/output mode can be specified in 1-bit units.
Input
ANI0 to ANI7
When used as input port, an on-chip pull-up resistor can be used by
software
Note2
.
P20
SI1
P21
SO1
P22
Port 2.
SCK1
P23
Input/
8-bit input/output port.
STB
P24
output
Input/output mode can be specified in 1-bit units.
BUSY
P25
When used as an input port, an on-chip pull-up resistor can be used by
SI0/SB0
P26
software.
SO0/SB1
P27
SCK0
Notes
1. When the P07/XT1 pin is used as an input port, set the bit 6 (FRC) of the processor clock control register
(PCC) to 1 (do not use the feedback resistor internal to the subsystem clock oscillator).
2. When pins P10/ANI0 to P17/ANI7 are used as an analog input of the A/D converter, set port 1 to input
mode. The on-chip pull-up resistor will automatically be disabled.
Input