HD6412350 Hitachi, HD6412350 Datasheet - Page 387

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Modes 2 and 6 [H8S/2351 Only]: In modes 2 and 6, port B pins function as address outputs or
input ports. Input or output can be specified on an individual bit basis. Setting a PBDDR bit to 1
makes the corresponding port B pin an address output, while clearing the bit to 0 makes the pin an
input port.
Port B pin functions in modes 2 and 6 are shown in figure 9-13.
Modes 3 and 7 [H8S/2351 Only]: In modes 3 and 7, port B pins function as I/O ports. Input or
output can be specified for each pin on an individual bit basis. Setting a PBDDR bit to 1 makes the
corresponding port B pin an output port, while clearing the bit to 0 makes the pin an input port.
Port B pin functions in modes 3 and 7 are shown in figure 9-14.
Port B
Figure 9-13 Port B Pin Functions (Modes 2 and 6)
Figure 9-14 Port B Pin Functions (Modes 3 and 7)
When PBDDR = 1
A
A
A
A
A
A
A
A
15
14
13
12
11
10
9
8
Port B
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
PB
PB
PB
PB
PB
PB
PB
PB
7
6
5
4
3
2
1
0
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
When PBDDR = 0
PB
PB
PB
PB
PB
PB
PB
PB
7
6
5
4
3
2
1
0
(input)
(input)
(input)
(input)
(input)
(input)
(input)
(input)
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