SH7052 Datasheet, PDF (669/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

18.3.16 Port H IO Register (PHIOR)
Bit: 15
14
13
12
11
10
9
8
PH15 PH14 PH13 PH12 PH11 PH10 PH9 PH8
IOR
IOR
IOR
IOR
IOR
IOR
IOR
IOR
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
Bit: 7
6
5
4
3
2
1
0
PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0
IOR
IOR
IOR
IOR
IOR
IOR
IOR
IOR
Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W
The port H IO register (PHIOR) is a 16-bit readable/writable register that selects the input/output
direction of the 16 pins in port H. Bits PH15IOR to PH0IOR correspond to pins PH15/D15 to
PH0/D0. PHIOR is enabled when port H pins function as general input/output pins (PH15 to
PH0), and disabled otherwise.
When port H pins function as PH15 to PH0, a pin becomes an output when the corresponding bit
in PHIOR is set to 1, and an input when the bit is cleared to 0.
PHIOR is initialized to H'0000 by a power-on reset (excluding a WDT power-on reset), and in
hardware standby mode. It is not initialized in software standby mode or sleep mode.
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