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參數(shù)資料
| 型號： | M38503M4H |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數(shù)： | 41/86頁 |
| 文件大小： | 1193K |
| 代理商： | M38503M4H |
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41
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 45 Flash memory control registers
Fig. 46 CPU rewrite mode set/reset flowchart
F
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Function
RW
0: Busy (being written or erased)
1: Ready
0: Normal mode
(Software commands invalid)
1: CPU rewrite mode
(Software commands acceptable)
0: Normal mode
(Software commands invalid)
1: CPU rewrite mode
(Software commands acceptable)
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0: Normal operation
1: Reset
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Notes 1:
For this bit to be set to
“
1
”
, the user needs to write a
“
0
”
and then a
“
1
”
to it in succession.
2:
Effective only when the CPU rewrite mode select bit = 1. Set this bit to
“
0
”
subsequently
after setting it to
“
1
”
(reset).
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Nothing is assigned.
When write, set
“
0
”
. When read, values are indeterminate.
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0: User ROM area
1: Boot ROM area
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2
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Transfer CPU rewrite mode control
program to internal RAM
Notes 1:
Set bit 6, 7 (Main clock division ratio selection bits ) at CPU mode register (003B
16
).
2:
Before exiting the CPU rewrite mode after completing erase or program operation, always be sure to
execute a read array command or reset the flash memory.
W
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“
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”
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*
1
*
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P
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R
O
M
Program in RAM
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