Hitachi H8/3937 Series Hardware Manual page 8

7.1.1 Block Diagram ...................................................................................................... 131
Section 8 I/O Ports
8.1 Overview ............................................................................................................................ 133
8.2 Port 1 .................................................................................................................................. 135
8.2.1 Overview............................................................................................................... 135
8.2.2 Register Configuration and Description ............................................................... 135
8.2.3 Pin Functions......................................................................................................... 140
8.2.4 Pin States............................................................................................................... 142
8.2.5 MOS Input Pull-Up............................................................................................... 142
8.3 Port 2 [Chip Internal I/O Port] ........................................................................................... 143
8.3.1 Overview............................................................................................................... 143
8.3.2 Register Configuration and Description ............................................................... 143
8.3.3 Function ................................................................................................................ 147
8.3.4 States ..................................................................................................................... 147
8.4 Port 3 .................................................................................................................................. 148
8.4.1 Overview............................................................................................................... 148
8.4.2 Register Configuration and Description ............................................................... 148
8.4.3 Pin Functions......................................................................................................... 151
8.4.4 Pin States............................................................................................................... 153
8.4.5 MOS Input Pull-Up............................................................................................... 153
8.5 Port 4* ................................................................................................................................ 154
8.5.1 Overview............................................................................................................... 154
8.5.2 Register Configuration and Description ............................................................... 154
8.5.3 Pin Functions......................................................................................................... 156
8.5.4 Pin States............................................................................................................... 157
8.6 Port 5 .................................................................................................................................. 158
8.6.1 Overview............................................................................................................... 158
8.6.2 Register Configuration and Description ............................................................... 158
8.6.3 Pin Functions......................................................................................................... 160
8.6.4 Pin States............................................................................................................... 161
8.6.5 MOS Input Pull-Up............................................................................................... 161
8.7 Port 6 .................................................................................................................................. 162
8.7.1 Overview............................................................................................................... 162
8.7.2 Register Configuration and Description ............................................................... 162
8.7.3 Pin Functions......................................................................................................... 164
8.7.4 Pin States............................................................................................................... 164
8.7.5 MOS Input Pull-Up............................................................................................... 164
8.8 Port 7 .................................................................................................................................. 165
8.8.1 Overview............................................................................................................... 165
8.8.2 Register Configuration and Description ............................................................... 165
8.8.3 Pin Functions......................................................................................................... 167
8.8.4 Pin States............................................................................................................... 167
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............................................................................................................. 133