Chapter 4 Pin Function ( Pd78054Y Subseries); Pin Function List; Normal Operating Mode Pins - NEC PD78052 User Manual

CHAPTER 4 PIN FUNCTION ( PD78054Y Subseries)

4.1 Pin Function List

4.1.1 Normal operating mode pins

(1) Port pins (1/3)
Pin Name
Input/Output
P00 Input
P01
P02
P03 Input/ Port 0.
P04 output 8-bit input/output port.
P05
P06
Note1
P07 Input
P10 to P17 Port 1.
8-bit input/output port.
Input/
Input/output mode can be specified in 1-bit units.
output
When used as input port, an on-chip pull-up resistor can be used by
software
P20
P21
P22 Port 2.
P23 Input/ 8-bit input/output port.
P24 output Input/output mode can be specified in1-bit units.
P25 When used as an input port, an on-chip pull-up resistor can be used by
P26 software.
P27
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.
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
Note2
.
After Reset Alternate Function
Input INTP0/TI00
INTP1/TI01
INTP2
INTP3
Input
INTP4
INTP5
INTP6
Input XT1
Input ANI0 to ANI7
SI1
SO1
SCK1
STB
Input
BUSY
SI0/SB0/SDA0
SO0/SB1/SDA1
SCK0/SCL
75