Renesas Hitachi H8S/2194 Series Hardware Manual page 15

8.8.9 Programmer Mode Transition Time ................................................................. 216
8.8.10 Notes On Memory Programming ..................................................................... 216
8.9 Flash Memory Programming and Erasing Precautions .................................................. 217
8.10 Note on Switching from F-ZTAT Version to Mask ROM Version ................................ 219
Section 9 RAM.............................................................................................. 221
9.1 Overview..................................................................................................................... 221
9.1.1 Block Diagram ................................................................................................ 221
Section 10 Clock Pulse Generator.................................................................. 223
10.1 Overview..................................................................................................................... 223
10.1.1 Block Diagram ................................................................................................ 223
10.1.2 Register Configuration..................................................................................... 223
10.2 Register Descriptions ................................................................................................... 224
10.2.1 Standby Control Register (SBYCR) ................................................................. 224
10.2.2 Low-Power Control Register (LPWRCR) ........................................................ 225
10.3 Oscillator..................................................................................................................... 226
10.3.1 Connecting a Crystal Resonator ....................................................................... 226
10.3.2 External Clock Input........................................................................................ 228
10.4 Duty Adjustment Circuit .............................................................................................. 231
10.5 Medium-Speed Clock Divider ...................................................................................... 231
10.6 Bus Master Clock Selection Circuit .............................................................................. 231
10.7 Subclock Oscillator Circuit .......................................................................................... 232
10.7.1 Connecting 32.768 kHz Crystal Resonator ....................................................... 232
10.7.2 External Clock Input........................................................................................ 233
10.7.3 When Subclock is not Needed.......................................................................... 233
10.8 Subclock Waveform Shaping Circuit............................................................................ 234
10.9 Notes on the Resonator ................................................................................................ 234
Section 11 I/O Port ........................................................................................ 235
11.1 Overview..................................................................................................................... 235
11.1.1 Port Functions ................................................................................................. 235
11.1.2 Port Input ........................................................................................................ 235
11.1.3 MOS Pull-Up Transistors ................................................................................ 237
11.2 Port 0........................................................................................................................... 238
11.2.1 Overview ........................................................................................................ 238
11.2.2 Register Configuration..................................................................................... 239
11.2.3 Pin Functions .................................................................................................. 240
11.2.4 Pin States ........................................................................................................ 240
11.3 Port 1........................................................................................................................... 241
11.3.1 Overview ........................................................................................................ 241
11.3.2 Register Configuration..................................................................................... 241
11.3.3 Pin Functions .................................................................................................. 245
Rev. 2.0, 11/00, page vi of xviii