Port 7 - Hitachi H8/329 Series Hardware Manual

5.8 Port 7

Port 7 is an 8-bit input port that also provides the analog input pins for the A/D converter module.
The pin functions are the same in both the expanded and single-chip modes.
Table 5-17 lists the pin functions. Table 5-18 describes the port 7 data register, which simply
consists of connections of the port 7 pins to the internal data bus. Figure 5-19 shows a schematic
diagram of port 7.
Table 5-17. Port 7 Pin Functions (Modes 1 to 3)
Usage Pin functions
I/O port P7
Analog input AN
Table 5-18. Port 7 Register
Name
Port 7 data register
Port 7 Data Register (P7DR)—H'FFBE
Bit 7
P7
7
Initial value *
Read/Write R
Note: * Depends on the levels of pins P7
P7n
RP7: Read port 7
n = 0 to 7
P7 P7
0 1 2
AN AN
0 1 2
Abbreviation Read/Write
P7DR R
6 5
P7 P7
6 5
* *
R R
P7
7 to
RP7
Figure 5-19. Port 7 Schematic Diagram
P7 P7 P7
3 4 5
AN AN AN
3 4
Initial value
Undetermined
4 3 2
P7 P7 P7
4 3
* * *
R R R
.
0
111
P7 P7
6 7
AN AN
5 6 7
Address
H'FFBE
1 0
P7 P7
2 1 0
* *
R R
A/D converter
module
Analog input