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CHAPTER 8 MODE SETTING
8.2
Mode Pins (MD2 to MD0)
Three external pins, MD2 to MD0, are supported as the mode pins. These are used to
specify how the reset vector and mode data are fetched.
■
Mode Pins (MD2 to MD0)
The mode pins are used to select the data bus (external or internal) used for reading the reset vector and to
specify the bus width when the external data bus is selected.
For a built-in FLASH version, the mode pins are also used to specify FLASH programming mode, which is
used to write programs and other data to internal FLASH.
Table 8.2-1 shows the mode pin settings.
Note:
Because the MB90460/465 series is only used in single-chip mode, set MD2, MD1, MD0 to 011
B
and
set M1, M0 to 00
B
.
Table 8.2-1 Mode Pin Settings
MD2
MD1
MD0
Mode name
Reset vector
access area
External data
bus width
Remarks
0
0
0
Setting not allowed
0
0
1
0
1
0
0
1
1
Internal vector mode
Internal
Mode data
The reset
sequence and
subsequent
sequences are
controlled by
mode data.
1
0
0
Setting not allowed
1
0
1
1
1
0
FLASH serial write
mode
-
-
-
1
1
1
FLASH memory
mode
-
-
Mode when the
parallel writer
is used.
MD2 to MD0: Connect the pins to Vss for 0 and to Vcc for 1.
*: The flash serial write mode cannot be executed by just setting the mode pins. Other terminal also need
to be set. For details, see "CHAPTER 24 EXAMPLE OF F
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......