Section 8 I/O Ports
Rev. 1.00 Mar. 12, 2008 Page 262 of 1178
REJ09B0403-0100
8.1.14 Port
E
Port E is an 8-bit I/O port. Port E pins can also function as the LPC input/output pins. Port E has
the following registers.
•
Port E data direction register (PEDDR)
•
Port E output data register (PEODR)
•
Port E input data register (PEPIN)
(1)
Port E Data Direction Register (PEDDR)
The individual bits of PEDDR specify input or output for the port E pins.
Bit
Bit Name
Initial Value
R/W Description
7 PE7DDR
0
W
6 PE6DDR
0
W
5 PE5DDR
0
W
4 PE4DDR
0
W
3 PE3DDR
0
W
2 PE2DDR
0
W
1 PE1DDR
0
W
0 PE0DDR
0
W
When set to 1, the corresponding pins function as
output port pins; when cleared to 0, function as input
port pins.
Since this register is allocated to the same address as
PEPIN, states of the port E pins are returned when
this register is read.
(2)
Port E Output Data Register (PEODR)
PEODR stores output data for the port E pins.
Bit
Bit Name
Initial Value
R/W Description
7 PE7ODR
0
R/W
6 PE6ODR
0
R/W
5 PE5ODR
0
R/W
4 PE4ODR
0
R/W
3 PE3ODR
0
R/W
2 PE2ODR
0
R/W
1 PE1ODR
0
R/W
0 PE0ODR
0
R/W
The PEODR register stores the output data for the
pins that are used as the general output port.
Содержание H8S Family
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Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
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Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
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Страница 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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