HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 900
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 23 I/O Ports
23.4.1
Port D has the following register.
• Port D data register (PDDR)
23.4.2
PDDR is a 16-bit readable/writable register that stores data for pins PTD15 to PTD0. PDDR is
initialized to H'0000 by a power-on reset, after which the general input port function is set as the
initial pin function, and the corresponding pin levels are read when MD3 = 0 (16-bit bus width in
CS0 space) is set. PDDR retains its previous value by a manual reset, in standby mode, or in sleep
mode.
Rev. 4.00 Sep. 14, 2005 Page 850 of 982
REJ09B0023-0400
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Register Description
Port D Data Register (PDDR)
Bit Name
PD15DT
PD14DT
PD13DT
PD12DT
PD11DT
PD10DT
PD9DT
PD8DT
PD7DT
PD6DT
PD5DT
PD4DT
PD3DT
PD2DT
PD1DT
PD0DT
Initial
Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Bits PD15DT to PD0DT correspond to pins PTD15 to
PTD0. When the pin function is general output port, the
value of the corresponding bit in PDDR is returned
directly by reading the port. When the function is
general input port, the corresponding pin level is read
by reading the port. Table 23.4 shows the function of
PDDR.
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