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SH7052 Datasheet(PDF) 710 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) 710 Page - Renesas Technology Corp

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19.11.2
Port K Data Register (PKDR)
Bit:
15
14
13
12
11
10
9
8
PK15
DR
PK14
DR
PK13
DR
PK12
DR
PK11
DR
PK10
DR
PK9
DR
PK8
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
Bit:
7
6
5
4
3
2
1
0
PK7
DR
PK6
DR
PK5
DR
PK4
DR
PK3
DR
PK2
DR
PK1
DR
PK0
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 K data register (PKDR) is a 16-bit readable/writable register that stores port K data. Bits
PK15DR to PK0DR correspond to pins PK15/TO8P to PK0/TO8A.
When a pin functions as a general output, if a value is written to PKDR, that value is output
directly from the pin, and if PKDR is read, the register value is returned directly regardless of the
pin state.
When a pin functions as a general input, if PKDR is read the pin state, not the register value, is
returned directly. If a value is written to PKDR, although that value is written into PKDR it does
not affect the pin state. Table 19.20 summarizes port K data register read/write operations.
PKDR 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.
Table 19.20 Port K Data Register (PKDR) Read/Write Operations
Bits 15 to 0:
PKIOR
Pin Function
Read
Write
0
General input
Pin state
Value is written to PKDR, but does not affect pin
state
Other than
general input
Pin state
Value is written to PKDR, but does not affect pin
state
1
General output
PKDR value
Write value is output from pin
Other than
general output
PKDR value
Value is written to PKDR, but does not affect pin
state



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