HD64F3048F16 Datasheet, PDF (322/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 9 I/O Ports
Port 9 Data Register (P9DR)
P9DR is an 8-bit readable/writable register that stores output data for pins P9₅ to P9₀. While port 9
acts as an output port, the value of this register is output. When a bit in P9DDR is set to 1, if port 9
is read the value of the corresponding P9DR bit is returned. When a bit in P9DDR is cleared to 0,
if port 9 is read the corresponding pin level is read.
Bit
7

Initial value
1
Read/Write

6
5
4
3
2
1
0

P9 ₅
P9 ₄
P9 ₃
P9 ₂
P9 ₁
P9 ₀
1
0
0
0
0
0
0

R/W
R/W
R/W
R/W
R/W R/W
Reserved bits
Port 9 data 5 to 0
These bits store data
for port 9 pins
Bits 7 and 6 are reserved. They cannot be modified and are always read as 1.
P9DR is initialized to H'C0 by a reset and in hardware standby mode. In software standby mode it
retains its previous setting.
Rev. 3.00 Sep 27, 2006 page 294 of 872
REJ09B0325-0300