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H8S2245 데이터시트(PDF) 268 Page - Renesas Technology Corp

부품명 H8S2245
상세설명  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
PDF  818 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S2245 데이터시트(HTML) 268 Page - Renesas Technology Corp

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Section 8 I/O Ports
Rev.3.00 Mar. 26, 2007 Page 226 of 772
REJ09B0355-0300
Port 2 Register (PORT2)
7
P27
—*
R
6
P26
—*
R
5
P25
—*
R
4
P24
—*
R
3
P23
—*
R
0
P20
—*
R
2
P22
—*
R
1
P21
—*
R
Bit
Initial value
R/W
:
:
:
Note: * Determined by state of pins P27 to P20.
PORT2 is an 8-bit read-only register that shows the pin states. It cannot be written to. Writing of
output data for the port 2 pins (P2
7 to P20) must always be performed on P2DR.
If a port 2 read is performed while P2DDR bits are set to 1, the P2DR values are read. If a port 2
read is performed while P2DDR bits are cleared to 0, the pin states are read.
After a power-on reset and in hardware standby mode, PORT2 contents are determined by the pin
states, as P2DDR and P2DR are initialized. PORT2 retains its prior state after a manual reset, and
in software standby mode.



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