SH7137 Datasheet, PDF (888/1160 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 21 I/O Ports
• PBDRL (SH7137)
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
PB7 PB7 PB5 PB4 PB3 PB2 PB1 PB0
DR DR DR DR DR DR DR DR
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/W R/W R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name Value R/W Description
15 to 8 
All 0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
7
PB7DR 0
R/W See table 21.4.
6
PB6DR 0
R/W
5
PB5DR 0
R/W
4
PB4DR 0
R/W
3
PB3DR 0
R/W
2
PB2DR 0
R/W
1
PB1DR 0
R/W
0
PB0DR 0
R/W
Table 21.4 Port B Data Register (PBDR) Read/Write Operations
• PBDRL Bits 7 to 0
PBIOR Pin Function
0
General input
Other than
general input
1
General output
Other than
general output
Read
Write
Pin state
Can write to PBDRL, but it has no effect on pin
state
Pin state
Can write to PBDRL, but it has no effect on pin
state
PBDRL value Value written is output from pin
PBDRL value Can write to PBDRL, but it has no effect on pin
state
Rev. 2.00 Sep. 10, 2008 Page 862 of 1130
REJ09B0402-0200