Port B; Overview; Register Configuration And Description - Renesas H8 Series Hardware Manual

8.11

Port B

8.11.1

Overview

Port B is an 8-bit input-only port, configured as shown in figure 8.10.
Note: * The extU and extD pins are implemented on the H8/38124 Group only.
8.11.2

Register Configuration and Description

Table 8.29 shows the port B register configuration.
Table 8.29 Port B Register
Name
Port data register B
Port mode register B
Port B
Figure 8.10 Port B Pin Configuration
Abbr. R/W
PDRB R
PMRB R/W
PB /AN
7 7
PB /AN
6 6
PB /AN
5 5
PB /AN
4 4
PB /AN /IRQ /TMIC
3 3 1
PB /AN
2 2
/extU *
PB /AN
1 1
/extD *
PB /AN
0 0
Initial Value
—
H'F7
Rev. 7.00 Mar 10, 2005 page 237 of 652
Section 8 I/O Ports
Address
H'FFDE
H'FFEE
REJ09B0042-0700