SH7080 Datasheet, PDF (1246/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 22 I/O Ports
Table 22.6 Port C Data Register (PCDR) Read/Write Operations
• PCDRH Bits 9 to 2 and PCDRL Bits 15 to 0
PCIOR Pin Function Read
Write
0
General input Pin state
Can write to PCDRH and PCDRL, but it has no
effect on pin state
Other than
general input
Pin state
Can write to PCDRH and PCDRL, but it has no
effect on pin state
1
General output PCDRH or Value written is output from pin
PCDRL value
Other than
PCDRH or Can write to PCDRH and PCDRL, but it has no
general output PCDRL value effect on pin state
22.3.3 Port C Port Registers H and L (PCPRH and PCPRL)
The port C port registers H and L (PCPRH and PCPRL) are 16-bit read-only registers that always
return the states of the pins regardless of the PFC setting. Bits PC15PR to PC0PR correspond to
pins PC15 to PC0 (multiplexed functions omitted here) in the SH7083, SH7084, and SH7085. Bits
PC25PR to PC18PR and PC15PR to PC0PR correspond to pins PC25 to PC18 and PC15 to PC0,
respectively (multiplexed functions omitted here) in the SH7086.
• PCPRH (SH7083, SH7084, SH7085)
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Initial
Bit
Bit Name Value R/W Description
15 to 0 
All 0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
Rev. 3.00 May 17, 2007 Page 1188 of 1582
REJ09B0181-0300