HD6432621 Hitachi, HD6432621 Datasheet - Page 273

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

9.3.2
Table 9-4 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 9-4
Name
Port 4 register
Note: * Lower 16 bits of the address.
Port 4 Register (PORT4): The pin states are always read when a port 4 read is performed.
Note: * Determined by state of pins P47 to P40.
9.3.3
Port 4 pins also function as A/D converter analog input pins (AN0 to AN7).
Bit
Initial value :
R/W
Register Configuration
Pin Functions
Port 4 Registers
:
:
P47
—*
7
R
P46
—*
6
R
Abbreviation
PORT4
P45
—*
5
R
P44
—*
4
R
R/W
R
P43
—*
3
R
Initial Value
Undefined
P42
—*
2
R
P41
—*
1
R
Address*
H'FFB3
P40
—*
0
R
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