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H8S/2224 Scheda tecnica(PDF) 433 Page - Renesas Technology Corp

Il numero della parte H8S/2224
Spiegazioni elettronici  16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series
PDF  1071 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S/2224 Scheda tecnica(HTML) 433 Page - Renesas Technology Corp

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Section 10 I/O Ports
Rev. 5.00 Aug 08, 2006 page 347 of 982
REJ09B0054-0500
10.10.1 Port E Data Direction Register (PEDDR)
PEDDR specifies input or output of the port E pins using the individual bits. PEDDR cannot be
read; if it is, an undefined value will be read. This register is a write-only register, and cannot be
written by bit manipulation instruction. For details, see section 2.9.4, Access Methods for
Registers with Write-Only Bits.
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 a pin is specified as a general purpose I/O port,
setting this bit to 1 makes the corresponding port E
pin an output port. Clearing this bit to 0 makes the pin
an input port.
10.10.2 Port E Data Register (PEDR)
PEDR stores output data for port E pins.
PEDR stores output data for port E pins.
Bit
Bit Name
Initial Value
R/W
Description
7
PE7DR
0
R/W
6
PE6DR
0
R/W
5
PE5DR
0
R/W
4
PE4DR
0
R/W
3
PE3DR
0
R/W
2
PE2DR
0
R/W
1
PE1DR
0
R/W
0
PE0DR
0
R/W
Output data for a pin is stored when the pin is
specified as a general purpose I/O port.



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