HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 475
HD6437101
Manufacturer Part Number
HD6437101
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6437101.pdf
(560 pages)
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15.5.1
Port F is an 8-bit input-only port in the SH7108 and a 16-bit input-only port in the SH7109. Port F
has the following register. For details on register addresses and register states during each
processing, refer to section 19, List of Registers.
• Port F data register (PFDR)
15.5.2
PFDR is a 16-bit read-only register that stores port F data.
In the SH7108, bits PF15DR to PF8DR correspond to pins PF15 to PF8 (multiplexed functions
omitted here). In the SH7109, bits PF15DR to PF0DR correspond to pins PF15 to PF0
(multiplexed functions omitted here).
Any value written into these bits is ignored, and there is no effect on the state of the pins. When
any of the bits are read, the pin state rather than the bit value is read directly. However, when an
A/D converter analog input is being sampled, values of 1 are read. Table 15.5 summarizes port F
data register read/write operations.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Notes: 1. Initial values are dependent on the state of the external pins.
Bit Name
PF15DR
PF14DR
PF13DR
PF12DR
PF11DR
PF10DR
PF9DR
PF8DR
PF7DR
PF6DR
PF5DR
PF4DR
PF3DR
PF2DR
PF1DR
PF0DR
2. These bits are reserved in the SH7108. The write value should always be 0.
Register Description
Port F Data Register (PFDR)
Initial Value
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
0/1*
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Description
See table 15.5.
See table 15.5.*
Rev.1.00 Sep. 18, 2008 Page 441 of 522
2
Section 15 I/O Ports
REJ09B0069-0100
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