15
15-15
Ver.0.10
Figure 15.4.2 Typical Connection of External Extension Memory (When BUSMOD = 1)
Note : The 32170 addresses and data are arranged in such a way that bit 0 = MSB, and bit 15 =
LSB. Therefore, the MSB and LSB sides must be reversed when connecting external
extension memory.
EXTERNAL BUS INTERFACE
15.4 Typical Connection of External Extension Memory
(2) When Bus Mode Control Register = 1
A typical connection when using external extension memory is shown in Figure 15.4.2. (External
extension memory can only be used in external extension mode and processor mode.)
M32170F6
A11
A30
A
A
A
A
D0
D15
A
A
A
A
RD
CS0
A
CS1
BLE
BHE
A
WAIT
H'0000 0000
H'0040 0000
H'0020 0000
H'000C 0000
H'0010 0000
A18
A0
A
A
D15
D0
A
A
RD
CS
max1MB
A19
A0
A
A
D15
D0
A
A
RD (D0-D15)
CS
BHE (D0-D7)
BLE (D8-D15)
max2MB
WR
WR (D0-D15)
Memory mapping
Internal flash memory
(768KB)
External
memory area
(1MB)
Number of bus wait cycles can be set to 1-4.
Normally used as port. WAIT is used only when four or more wait cycles are needed.
Unused
1M-CS0 area
SRAM
Flash memory
External
memory area
(2MB)
2M-CS1 area
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...