SH7205 Datasheet, PDF (1546/1904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 28 I/O Ports
Table 28.3 Port B Data Registers H, L (PBDRH, PBDRL) Read/Write Operations
• Bits 2 to 0 of PBDRH and Bits 15 to 0 of PBDRL
PBIORH, L Pin Function
0
General input
Read Operation
Pin state
Other than
general input
Pin state
1
General output PBDRH/PBDRL
value
Other than
PBDRH/PBDRL
general output value
Write Operation
Can write to PBDRH/PBDRL, but it has no
effect on pin state
Can write to PBDRH/PBDRL, but it has no
effect on pin state
Value written is output from pin
Can write to PBDRH/PBDRL, but it has no
effect on pin state
28.2.4 Port B Port Registers H, L (PBPRH, PBPRL)
PBPRH and PBPRL are 16-bit read-only registers, in which the PB18PR to PB0PR bits
correspond to the PB18 to PB0 pins, respectively. PBPRH and PBPRL always return the states of
the pins regardless of the PFC setting.
(1) Port B Port Register H (PBPRH)
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
-
PB18 PB17 PB16
PR PR PR
Initial value: ₀
0
0
0
0
0
0
0
0
0
0
0
0 ^{PB18 PB17 PB16}
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
15 to 3 —
All 0
R
2
PB18PR Pin state R
1
PB17PR Pin state R
0
PB16PR Pin state R
Description
Reserved
These bits are always read as 0 and cannot be
modified.
The pin state is returned regardless of the PFC setting.
These bits cannot be modified.
Rev. 1.00 Mar. 25, 2008 Page 1514 of 1868
REJ09B0372-0100