D12320VF25V Datasheet, PDF (31/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

17.25.1 Hardware Protection ............................................................................................ 738
17.25.2 Software Protection.............................................................................................. 739
17.25.3 Error Protection.................................................................................................... 739
17.26 Flash Memory Emulation in RAM ................................................................................... 741
17.27 Switching between User MAT and User Boot MAT ........................................................ 744
17.27.1 Usage Notes ......................................................................................................... 745
17.28 PROM Mode..................................................................................................................... 746
17.28.1 Pin Arrangement of the Socket Adapter .............................................................. 747
17.28.2 PROM Mode Operation....................................................................................... 749
17.28.3 Memory-Read Mode............................................................................................ 750
17.28.4 Auto-Program Mode ............................................................................................ 751
17.28.5 Auto-Erase Mode ................................................................................................. 751
17.28.6 Status-Read Mode................................................................................................ 752
17.28.7 Status Polling ....................................................................................................... 752
17.28.8 Time Taken in Transition to PROM Mode .......................................................... 753
17.28.9 Notes on Using PROM Mode .............................................................................. 753
17.29 Further Information........................................................................................................... 754
17.29.1 Serial Communication Interface Specification for Boot Mode............................ 754
17.29.2 AC Characteristics and Timing in PROM Mode ................................................. 781
17.29.3 Procedure Program and Storable Area for Programming Data ............................ 787
Section 18 Clock Pulse Generator .....................................................................793
18.1 Overview........................................................................................................................... 793
18.1.1 Block Diagram ..................................................................................................... 793
18.1.2 Register Configuration......................................................................................... 794
18.2 Register Descriptions ........................................................................................................ 794
18.2.1 System Clock Control Register (SCKCR) ........................................................... 794
18.3 Oscillator........................................................................................................................... 796
18.3.1 Connecting a Crystal Resonator........................................................................... 796
18.3.2 External Clock Input ............................................................................................ 798
18.4 Duty Adjustment Circuit ................................................................................................... 800
18.5 Medium-Speed Clock Divider .......................................................................................... 800
18.6 Bus Master Clock Selection Circuit .................................................................................. 800
Section 19 Power-Down Modes ........................................................................801
19.1 Overview........................................................................................................................... 801
19.1.1 Register Configuration......................................................................................... 802
19.2 Register Descriptions ........................................................................................................ 803
19.2.1 Standby Control Register (SBYCR) .................................................................... 803
19.2.2 System Clock Control Register (SCKCR) ........................................................... 805
Rev.7.00 Feb. 14, 2007 page xxix of xxxii
REJ09B0089-0700