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參數(shù)資料
| 型號(hào)： | MSM6542-01 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | REAL TIME CLOCK WITH PERIODIC AND ALARM OUTPUT |
| 中文描述： | 實(shí)時(shí)時(shí)鐘周期和報(bào)警輸出 |
| 文件頁數(shù)： | 39/54頁 |
| 文件大?。?/td> | 378K |
| 代理商： | MSM6542-01 |
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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
C
E'
register
DP
←
0
Idling for at least 11ms
DP = 0
Read C
E'
register
What status
before 5V is
applied
*3
Are contents of
individual register
correct
Does operator
determine that the
current time is
correct
C
register
REST
←
1
Idling for 123 μs
Set individual
registers
Check contents of
individual register
C
register
REST
←
0
Standby
Unclear
No
Yes
V
DD
= 0V
Yes
*4
*5
No
(CS
1
)
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-Y
10
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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