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參數(shù)資料
| 型號： | MSM6542-01MS-K |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| 封裝： | 0.250 INCH, PLASTIC, SSOP-20 |
| 文件頁數(shù)： | 33/54頁 |
| 文件大?。?/td> | 406K |
| 代理商： | MSM6542-01MS-K |
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Semiconductor
MSM6542-01/02/03
106
Reference flowcharts
In the following flowcharts, description of bank switching is omitted.
[Power on sequence when DP is 0]
Apply 5V
Read C register
C'
N
Y
*1
*2
CE' register
DP ← 0
Idling for at least 11ms
DP = 0
Read CE' register
What status
before 5V is
applied?
*3
Are contents of
individual register
correct
Does operator
determine that the
current time is
correct
CE register
REST ← 1
Idling for 123 s
Set individual
registers
Check contents of
individual register
CE register
REST ← 0
Standby
Unclear
No
Yes
VDD = 0V
Yes
*4
*5
No
(CS1
)
The test bit is cleared.
Time until the DP bit becomes
0 under assumption that oscil-
lation is in progress.
When the voltage before 5V is
applied is 0V, this loop takes
the time equal to the one re-
quired to start oscillation.
Usually, it takes 0.5 to 2 s.
The contents of R-S, to R-Y10
and R-W must be possible
values and the values of the
other registers must be as
expected.
Wait time until a carry which
may be generated is com-
pleted.
*1
*2
*3
*4
*5
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