D12320VF25IV Datasheet, PDF (1169/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Appendix B Internal I/O Registers
PFCR1—Port Function Control Register 1
H'FF45
Bit
:
7
6
5
4
3
2
1
0
—
—
—
—
A23E A22E A21E A20E
Initial value :
0
0
0
0
1
1
1
1
Read/Write :
R/W
R/W
R/W
R/W
R/W
R/W
R/W R/W
Address 20 Output Enable*
0 PA4DR is output when PA4DDR = 1
1 A₂₀ is output when PA4DDR = 1
Address 21 Output Enable*
0 PA5DR is output when PA5DDR = 1
1 A₂₁ is output when PA5DDR = 1
Address 22 Output Enable*
0 PA6DR is output when PA6DDR = 1
1 A₂₂ is output when PA6DDR = 1
Address 23 Output Enable*
0 PA7DR is output when PA7DDR = 1
1 A₂₃ is output when PA7DDR = 1
Note: * Valid only in modes 4 to 6.
Reserved
Only 0 should be written to these bits
Rev.6.00 Sep. 27, 2007 Page 1137 of 1268
REJ09B0220-0600