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SH7052 Datasheet(PDF) 695 Page - Renesas Technology Corp

Part # SH7052
Description  SuperHTM RISC engine
PDF  919 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7052 Datasheet(HTML) 695 Page - Renesas Technology Corp

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19.5.2
Port D Data Register (PDDR)
Bit:
15
14
13
12
11
10
9
8
——
PD13
DR
PD12
DR
PD11
DR
PD10
DR
PD9
DR
PD8
DR
Initial value:
0
0
0
0
0
0
0
0
R/W:
R
R
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
7
6
5
4
3
2
1
0
PD7
DR
PD6
DR
PD5
DR
PD4
DR
PD3
DR
PD2
DR
PD1
DR
PD0
DR
Initial value:
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
The port D data register (PDDR) is a 16-bit readable/writable register that stores port D data. Bits
PD13DR to PD0DR correspond to pins PD13/PULS6/HTxD0/HTxD1 to PD0/TIO1A.
When a pin functions as a general output, if a value is written to PDDR, that value is output
directly from the pin, and if PDDR is read, the register value is returned directly regardless of the
pin state.
When a pin functions as a general input, if PDDR is read the pin state, not the register value, is
returned directly. If a value is written to PDDR, although that value is written into PDDR it does
not affect the pin state. Table 19.8 summarizes port D data register read/write operations.
PDDR is initialized to H'0000 by a power-on reset (excluding a WDT power-on reset), and in
hardware standby mode. It is not initialized in software standby mode or sleep mode.
• Bits 15 and 14— Reserved: These bits always read 0. The write value should always be 0.
Table 19.8
Port D Data Register (PDDR) Read/Write Operations
Bits 13 to 0:
PDIOR
Pin Function
Read
Write
0
General input
Pin state
Value is written to PDDR, but does not affect pin
state
Other than
general input
Pin state
Value is written to PDDR, but does not affect pin
state
1
General output
PDDR value
Write value is output from pin
Other than
general output
PDDR value
Value is written to PDDR, but does not affect pin
state



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