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Section 32 General Purpose I/O Ports
Page 1704 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Table 32.14 Port B Data Registers 1, 0 (PBDR1, PBDR0) Read/Write Operation
Bits 6 to 0 of PBDR1 and Bits 15 to 1 of PBDR0
PBIOR1, 0 Pin Function
Read
Operation Write Operation
0 General input Pin state Can write to PBDR0/PBDR1, but it has no effect
on the pin state.
Other than
general input
Pin state Can write to PBDR0/PBDR1, but it has no effect
on the pin state.
1 General output PBDR0/PBDR1
value
Value written is output to the pin
Other than
general output
PBDR0/PBDR1
value
Can write to PBDR0/PBDR1, but it has no effect
on the pin state.
32.2.7 Port B Port Registers 0, 1 (PBPR0, PBPR1)
PBPR (PBPR0, PBPR1) is 16-bit read-only register, in which the PB22PR to PB1PR bits
correspond to the PB22 to PB1 pins, respectively. PBPR always returns the states of the pins
regardless of the PBCR5 to PBCR0 settings.
(1) Port B Port Register 1 (PBPR1)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0 PB22 PB21 PB20 PB19 PB18 PB17 PB16
RRRRRRRRRRRRRRRR
--------
PB22
PR
PB21
PR
PB20
PR
PB19
PR
PB18
PR
PB17
PR
PB16
PR
-
Bit:
Initial value:
R/W:
Bit Bit Name Initial Value R/W Description
15 to 7 All 0 R Reserved
These bits are always read as 0. The write
value should always be 0.
6 PB22PR Pin state R The pin state is returned. These bits cannot be
modified.
5 PB21PR Pin state R
4 PB20PR Pin state R
3 PB19PR Pin state R
2 PB18PR Pin state R
1 PB17PR Pin state R
0 PB16PR Pin state R