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General Purpose Input/Output
21.2.3.5 Port C Data Register
PCDR is the Port C Data Register. The active bits used in this register are Read/Write.
Values written to PCDR are output on the PC pins if the corresponding PCDDR Data Direc-
tion bits are set HIGH (port output).
The values read from each bit of this register are determined by the value of the corre-
sponding bit in the Port C Data Direction Register (see Section 21.2.3.7). A read from this
register returns either:
• The last bit value written if the bit is configured as an output.
• The current value on the corresponding port input if the bit is configured as an input.
A System Reset clears all bits.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
BITS
31:8
7:0
21-8
31
30
29
28
27
0
0
0
0
R
R
R
R
15
14
13
12
11
///
0
0
0
0
R
R
R
R
Table 21-12. PCDR Register Definitions
NAME
///
Reserved Writing to these bits has no effect. Reading returns 0.
Port C Input/Output Data Specifies Port C input or output data, depend-
ing on how the value of the corresponding bit in the PCDDDR Register is set
(see Section 21.2.3.7).
Port C Data
PCDDR set as output = PCDR sets the value on the GPIO Port C pins.
PCDDR set as input = PCDR reads the value on the GPIO Port C pins.
LH75400/01/10/11 (Preliminary) User's Guide
Table 21-11. PCDR Register
26
25
24
23
///
0
0
0
0
0
R
R
R
R
R
10
9
8
7
0
0
0
0
0
R
R
R
R
RW
0xFFFDE000 + 0x00
FUNCTION
6/17/03
22
21
20
19
18
0
0
0
0
0
R
R
R
R
R
6
5
4
3
2
Port C Data
0
0
0
0
0
RW
RW
RW
RW
RW
17
16
0
0
R
R
1
0
0
0
RW
RW
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