h8s-2110b Renesas Electronics Corporation., h8s-2110b Datasheet - Page 137
h8s-2110b
Manufacturer Part Number
h8s-2110b
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2110B.pdf
(559 pages)
- Current page: 137 of 559
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7.4
Port 3 is an 8-bit I/O port. Port 3 pins also function as LPC input/output pins. Port 3 has the
following registers.
7.4.1
P3DDR specifies input or output for the pins of port 3 on a bit-by-bit basis.
7.4.2
P3DR stores output data of port 3.
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
2
1
0
Port 3 data direction register (P3DDR)
Port 3 data register (P3DR)
Port 3 pull-up MOS control register (P3PCR)
Bit Name
P37DDR
P36DDR
P35DDR
P34DDR
P33DDR
P32DDR
P31DDR
P30DDR
Bit Name
P37DR
P36DR
P35DR
P34DR
P33DR
P32DR
P31DR
P30DR
Port 3
Port 3 Data Direction Register (P3DDR)
Port 3 Data Register (P3DR)
Initial Value
0
0
0
0
0
0
0
0
Initial Value
0
0
0
0
0
0
0
0
R/W
W
W
W
W
W
W
W
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
The corresponding port 3 pins are output ports
when P3DDR bits are set to 1, and input ports
when P3DDR bits are cleared to 0.
Description
If a port 3 read is performed while P3DDR bits are
set to 1, the P3DR values are read directly,
regardless of the actual pin states. If a port 3 read
is performed while P3DDR bits are cleared to 0,
the pin states are read.
Rev. 2.00 Mar 21, 2006 page 99 of 518
Section 7 I/O Ports
REJ09B0299-0200
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