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HD6417618A датащи(PDF) 492 Page - Renesas Technology Corp

номер детали HD6417618A
подробное описание детали  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
PDF  646 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
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HD6417618A датащи(HTML) 492 Page - Renesas Technology Corp

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Section 17 I/O Ports
Rev. 6.00 Jun. 12, 2007 Page 460 of 610
REJ09B0131-0600
When the pin function is general input port, not the value of register but pin state is directly read if
PBDRL is read. Data can be written to PBDRL but no effect on the pin state. Table 17.2 shows the
reading/writing function of the port B data register L.
Bit
Bit Name
Initial
Value
R/W
Description
15
14
0
0
R
R
Reserved
These bits are always read as 0. The write value should
always be 0.
13
PB13DR
0
R/W
See table 17.2.
12
PB12DR
0
R/W
11
PB11DR
0
R/W
10
PB10DR
0
R/W
9
PB9DR
0
R/W
8
PB8DR
0
R/W
7
PB7DR
0
R/W
6
PB6DR
0
R/W
5
PB5DR
0
R/W
4
PB4DR
0
R/W
3
PB3DR
0
R/W
2
PB2DR
0
R/W
1
PB1DR
0
R/W
0
PB0DR
0
R/W
Table 17.2
Port B Data Register L (PBDRL) Read/Write Operation
• Bits 13 to 0 in PBDRL
Pin Function
PBIORL
Read
Write
General input
0
Pin state
Data can be written to PBDRL but no effect on
the pin state.
General output
1
PBDRL value
Written value is output from the pin.
Other functions
*
PBDRL value
Data can be written to PBDRL but no effect on
the pin state.



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