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159
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
Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
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Страница 9: ...iv ...
Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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