H83048 datasheet(22/905 Pages) RENESAS

22 / 905 page

Rev. 7.00 Sep 21, 2005 page xxii of xxiv

19.5.8 Protect Modes ...................................................................................................... 625

19.5.9 NMI Input Masking ............................................................................................. 628

19.6 Flash Memory Emulation by RAM................................................................................... 629

19.7 Flash Memory PROM Mode............................................................................................. 631

19.7.1 PROM Mode Setting............................................................................................ 631

19.7.2 Socket Adapter and Memory Map ....................................................................... 632

19.7.3 Operation in PROM Mode................................................................................... 634

19.8 Flash Memory Programming and Erasing Precautions (Dual-Power Supply).................. 643

19.9 Notes when Converting the F-ZTAT (Dual-Power Supply) Application Software

to the Mask-ROM Versions .............................................................................................. 651

Section 20 Clock Pulse Generator .................................................................................. 653

20.1 Overview........................................................................................................................... 653

20.1.1 Block Diagram..................................................................................................... 654

20.2 Oscillator Circuit............................................................................................................... 655

20.2.1 Connecting a Crystal Resonator........................................................................... 655

20.2.2 External Clock Input ............................................................................................ 657

20.3 Duty Adjustment Circuit................................................................................................... 659

20.4 Prescalers .......................................................................................................................... 659

20.5 Frequency Divider ............................................................................................................ 660

20.5.1 Register Configuration......................................................................................... 660

20.5.2 Division Control Register (DIVCR) .................................................................... 660

20.5.3 Usage Notes ......................................................................................................... 661

Section 21 Power-Down State ......................................................................................... 663

21.1 Overview........................................................................................................................... 663

21.2 Register Configuration...................................................................................................... 665

21.2.1 System Control Register (SYSCR) ...................................................................... 665

21.2.2 Module Standby Control Register (MSTCR) ...................................................... 667

21.3 Sleep Mode ....................................................................................................................... 669

21.3.1 Transition to Sleep Mode..................................................................................... 669

21.3.2 Exit from Sleep Mode.......................................................................................... 669

21.4 Software Standby Mode.................................................................................................... 669

21.4.1 Transition to Software Standby Mode ................................................................. 669

21.4.2 Exit from Software Standby Mode ...................................................................... 670

21.4.3 Selection of Waiting Time for Exit from Software Standby Mode...................... 670

21.4.4 Sample Application of Software Standby Mode.................................................. 672

21.4.5 Note...................................................................................................................... 672

21.5 Hardware Standby Mode .................................................................................................. 673

21.5.1 Transition to Hardware Standby Mode................................................................ 673

H83048 Datasheet(PDF) 22 Page - Renesas Technology Corp