17
17-22
Rev.1.0
17.4 Example for Connecting External Extension Memory
(1) When Bus Mode Control Register = 0 (with two memory blocks connected)
Figure 17.4.1 shows a typical connection diagram for the microcomputer when using external
extension memory (external extended mode).
Figure 17.4.1 Typical Connection of External Extension Memory Using Two Memory Blocks
(when BUSMOD = 0)
Note: The M32R/E address and data are comprised of bit 0 = MSB and bit 15 = LSB.
When connecting external extension memory to the chip, the MSB and the LSB sides
must be reversed.
EXTERNAL BUS INTERFACE
17.4 Example for Connecting External Extension Memory
Memory mapping
Internal flash memory
(256KB)
Bus wait states can be set to 1 through 4.
Normally used for port function. Use WAIT only when four or more wait states are required.
H'0000 0000
H'001F FFFF
H'0040 0000
H'0020 0000
H'0004 0000
Unused
H'0010 0000
External memory area
2M-CS1 area
SRAM
Flash memory
A18
A0
D15
D0
RD
CS
max1MB
A17
A0
D15
D0
RD(D0-D15)
CS
WR(D0-D7)
WR(D8-D15)
max512KB*2
(total1MB)
M32172F2
A12
A30
D0
D15
RD
CS0
CS1
BLW
BHW
WAIT
H'000F FFFF
(1MB)
Ghost area
H'0030 0000
External memory area
(1MB)
1M-CS0 area
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...