H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 409

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

9.9
9.9.1
Port B is an 8-bit I/O port. Port B has an address bus output function, and the pin functions change
according to the operating mode. However, in the H8S/2350, port B pins function only as address
outputs.
Port B has a built-in MOS input pull-up function that can be controlled by software (H8S/2351
only).
Figure 9.11 shows the port B pin configuration.
Port B
Overview
Pin functions in modes 2 and 6 *
PB
PB
PB
PB
PB
PB
PB
PB
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
Port B
7
6
5
4
3
2
1
0
(input)/
(input)/
(input)/
(input)/
(input)/
(input)/
(input)/
(input)/
A
A
A
A
A
A
A
A
15
14
13
12
11
10
9
8
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
Port B pins
PB
PB
PB
PB
PB
PB
PB
PB
7
6
5
4
3
2
1
0
/ A
/ A
/ A
/ A
/ A
/ A
/ A
/ A
Figure 9.11 Port B Pin Functions
15
14
13
12
11
10
9
8
Pin functions in modes 1, 4, and 5
A
A
A
A
A
A
A
A
Pin functions in modes 3 and 7 *
PB
PB
PB
PB
PB
PB
PB
PB
Rev. 3.00 Sep 15, 2006 page 375 of 988
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
(I/O)
Section 9 I/O Ports
REJ09B0330-0300