H8/3068F Просмотр технического описания (PDF) - Renesas Electronics
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H8/3068F Datasheet PDF : 935 Pages
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18.10.2 Notes on Use of PROM Mode ............................................................................. 642
18.11 Flash Memory Programming and Erasing Precautions..................................................... 643
Section 19 Clock Pulse Generator .................................................................................. 649
19.1 Overview........................................................................................................................... 649
19.1.1 Block Diagram..................................................................................................... 650
19.2 Oscillator Circuit............................................................................................................... 651
19.2.1 Connecting a Crystal Resonator........................................................................... 651
19.2.2 External Clock Input............................................................................................ 653
19.3 Duty Adjustment Circuit................................................................................................... 655
19.4 Prescalers .......................................................................................................................... 655
19.5 Frequency Divider ............................................................................................................ 656
19.5.1 Register Configuration......................................................................................... 656
19.5.2 Division Control Register (DIVCR) .................................................................... 656
19.5.3 Usage Notes ......................................................................................................... 657
Section 20 Power-Down State ......................................................................................... 659
20.1 Overview........................................................................................................................... 659
20.2 Register Configuration...................................................................................................... 661
20.2.1 System Control Register (SYSCR) ...................................................................... 661
20.2.2 Module Standby Control Register H (MSTCRH)................................................ 663
20.2.3 Module Standby Control Register L (MSTCRL)................................................. 664
20.3 Sleep Mode ....................................................................................................................... 667
20.3.1 Transition to Sleep Mode..................................................................................... 667
20.3.2 Exit from Sleep Mode.......................................................................................... 667
20.4 Software Standby Mode.................................................................................................... 668
20.4.1 Transition to Software Standby Mode ................................................................. 668
20.4.2 Exit from Software Standby Mode ...................................................................... 668
20.4.3 Selection of Waiting Time for Exit from Software Standby Mode ..................... 669
20.4.4 Sample Application of Software Standby Mode.................................................. 670
20.4.5 Note ..................................................................................................................... 670
20.5 Hardware Standby Mode .................................................................................................. 671
20.5.1 Transition to Hardware Standby Mode................................................................ 671
20.5.2 Exit from Hardware Standby Mode..................................................................... 671
20.5.3 Timing for Hardware Standby Mode ................................................................... 671
20.6 Module Standby Function................................................................................................. 673
20.6.1 Module Standby Timing ...................................................................................... 673
20.6.2 Read/Write in Module Standby ........................................................................... 673
20.6.3 Usage Notes ......................................................................................................... 673
20.7 System Clock Output Disabling Function......................................................................... 674
Rev. 3.00 Sep 14, 2005 page xix of xxii
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