HD6432345 Datasheet, PDF (253/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

8.5.2 Register Configuration
Table 8.8 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 8.8 Port 4 Registers
Name
Abbreviation
Port 4 register
PORT4
Note: * Lower 16 bits of the address.
R/W Initial Value
R
Undefined
Address*
H'FF53
Port 4 Register (PORT4):
Bit
:
7
P47
Initial value : —*
R/W
:
R
6
5
P46
P45
—*
—*
R
R
4
3
2
P44
P43
P42
—*
—*
—*
R
R
R
1
0
P41
P40
—*
—*
R
R
Note: * Determined by state of pins P47 to P40.
PORT4 is an 8-bit read-only port. A read always returns the pin states. Writes are invalid.
8.5.3 Pin Functions
Port 4 pins also function as A/D converter analog input pins (AN0 to AN7) and D/A converter
analog output pins (DA0 and DA1).
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