248
9.5.2
Register Configuration
Table 9-8 shows the port 4 register configuration. Port 4 is an input-only port, and does not have a
data direction register or data register.
Table 9-8
Port 4 Registers
Name
Abbreviation
R/W
Initial Value
Address
*
Port 4 register
PORT4
R
Undefined
H'FFB3
Note:
*
Lower 16 bits of the address.
Port 4 Register (PORT4): The pin states are always read when a port 4 read is performed.
Bit
:
7
6
5
4
3
2
1
0
P47
P46
P45P44
P43
P42
P41
P40
Initial value :
—
*
—
*
—
*
—
*
—
*
—
*
—
*
—
*
R/W
:
R
R
R
R
R
R
R
R
Note:
*
Determined by state of pins P47 to P40.
9.5.3
Pin Functions
Port 4 pins also function as A/D converter analog input pins (AN0 to AN7).
Содержание H8S/2645
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Страница 837: ...805 A 2 Instruction Codes Table A 2 shows the instruction codes ...
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