HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 253

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

8.5.2
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
Name
Port 4 register
Note: * Lower 16 bits of the address.
Port 4 Register (PORT4):
PORT4 is an 8-bit read-only port. A read always returns the pin states. Writes are invalid.
8.5.3
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).
236
Bit
Initial value
R/W
Note: * Determined by state of pins P4
Register Configuration
Pin Functions
Port 4 Registers
:
:
:
P47
—*
R
7
P46
—*
R
6
Abbreviation
PORT4
P45
7
—*
R
5
to P4
0
.
P44
—*
R
4
R/W
R
P43
—*
R
3
Initial Value
Undefined
P42
—*
R
2
P41
—*
R
1
Address*
H'FF53
P40
—*
R
0