NEC PD78076 User Manual page 66

(1) Port pins (2/3)
Pin Name
Input/Output
P30
P31
P32 Port 3.
P33 Input/ 8-bit input/output port.
P34 output Input/output mode can be specified bit-wise.
P35 If used as an input port, an on-chip pull-up resistor can be connected by
P36 software.
P37
Port 4.
8-bit input/output port.
Input/ Input/output mode can be specified in 8-bit units.
P40 to P47
output If used as an input port, an on-chip pull-up resistor can be connected by
software.
Test input flag (KRIF) is set to 1 by falling edge detection.
Port 5.
8-bit input/output port.
Input/ LEDs can be driven directly.
P50 to P57
output Input/output mode can be specified bit-wise.
If used as an input port, an on-chip pull-up resistor can be connected
by software.
P61
P62 Port 6.
P63 Input/ 8-bit input/output port.
P64 output Input/output mode can be
P65 specified bit-wise.
P66
P67
Port 7.
P70
3-bit input/output port.
Input/
P71 Input/output mode can be specified bit-wise.
output
If used as an input port, an on-chip pull-up resistor can be connected
P72
by software.
Port 8.
8-bit input/output port.
Input/
Input/output mode can be specified bit-wise.
P80 to P87
output
If used as an input port, an on-chip pull-up resistor can be connected
by software.
66
CHAPTER 3 PIN FUNCTION ( PD78078 SUBSERIES)
Function
N-ch open drain input/output port.
On-chip pull-up resistor can be
specified by mask option.
(Mask ROM version only).
LEDs can be driven directly.
If used as an input port, an on-chip
pull-up resistor can be connected
by software.
After Reset Alternate Function
TO0
TO1
TO2
TI1
Input
TI2
PCL
BUZ
—
Input AD0 to AD7
Input A8 to A15
—
Input RD
WR
WAIT
ASTB
SI2/RxD
SO2/TxD
Input
SCK2/ASCK
Input A0 to A7