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Section 8 EEPROM ......................................................................................... 77
8.1 Overview............................................................................................................................ 77
8.1.1 Features ................................................................................................................ 77
8.1.2 Block Diagram...................................................................................................... 78
8.1.3 Memory Organization .......................................................................................... 79
8.1.4 Register Configuration ......................................................................................... 81
8.2 Register Descriptions......................................................................................................... 82
8.2.1 EEPROM Control Register (ECR)....................................................................... 82
8.2.2 EEPROM Protection Register (EPR)................................................................... 83
8.3 EEPROM Read Operation ................................................................................................ 83
8.4 EEPROM Write and Erase Operations.............................................................................. 84
8.4.1 Write/Erase Sequence .......................................................................................... 84
8.4.2 Rewrite ................................................................................................................. 86
8.4.3 Erase..................................................................................................................... 87
8.4.4 Overwrite.............................................................................................................. 87
8.5 Write/Erase Protection.......................................................................................................88
8.5.1 Protect Bits ........................................................................................................... 88
8.5.2 Protection Procedure ............................................................................................ 89
8.5.3 Reading the Protect Bits....................................................................................... 91
8.6 Notes on Usage.................................................................................................................. 92
8.7 Notes on Usage of H8/3153 .............................................................................................. 94
Section 9 I/O Ports........................................................................................... 97
9.1 Overview............................................................................................................................ 97
9.1.1 Block Diagram...................................................................................................... 97
9.1.2 Register Configuration ......................................................................................... 99
9.2 Register Descriptions......................................................................................................... 99
9.2.1 Data Register (DR)............................................................................................... 99
9.2.2 Data Direction Register (DDR)............................................................................ 100
9.3 Pin Functions..................................................................................................................... 100
Section 10 Clock Pulse Generator .....................................................................103
10.1 Overview............................................................................................................................ 103
10.2 System Control Register.................................................................................................... 104
Section 11 Security............................................................................................105
11.1 Overview............................................................................................................................ 105
11.2 Error Detection in Sleep Mode.......................................................................................... 105
Section 12 Electrical Characteristics..................................................................107
12.1 Absolute Maximum Ratings.............................................................................................. 107
12.2 Electrical Characteristics................................................................................................... 108
12.2.1 DC Characteristics (5 V, CPU operates at half of the external clock frequency) 109