Overview; Register Configuration And Description - Renesas H8/38024 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 Data Register B (PDRB)
Bit
PB
Read/Write R
Rev. 6.00, 08/04, page 230 of 628
Port B
Figure 8.10 Port B Pin Configuration
Abbr.
PDRB
PMRB
7 6 5
PB PB
7 6
R R
PB /AN
7 7
PB /AN
6 6
PB /AN
5 5
PB /AN
4 4
PB /AN /IRQ
3 3
PB /AN
2 2
/extU *
PB /AN
1 1
/extD *
PB /AN
0 0
R/W Initial Value
R —
R/W H'F7
4 3
PB PB
3
5 4
R R
/TMIC
1
Address
H'FFDE
H'FFEE
2 1
PB PB
2 1
R R
0
PB
0
R