參數(shù)資料
型號： M37641M8
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)： 105/149頁
文件大小： 1997K
代理商： M37641M8
105
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
Fig. 90 CPU rewrite mode set/release flowchart
End
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Single-chip mode, Memory expansion mode or
Boot mode
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Notes 1
: When starting the MCU in the single-chip mode or memory expansion mode, supply
4.5 V to 5.25 V to the CNVss pin until checking the CPU rewrite mode entry flag.
2
: Set the main clock as follows depending on the X
IN
divider select bit of clock control
register (bit 7 of address 001F
16
):
When X
IN
divider select bit =
“
0
”
(
φ
= f(X
IN
)/4), the main clock is 24 MHz or less
When X
IN
divider select bit =
“
1
”
(
φ
= f(X
IN
)/2), the main clock is 12 MHz or less.
3
: Before exiting the CPU rewrite mode after completing erase or program operation,
always be sure to execute the read array command or reset the flash memory.
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Set CPU rewrite mode select bit to
“
1
”
(by
writing
“
0
”
and then
“
1
”
in succession)
Check CPU rewrite mode entry flag
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