參數(shù)資料
型號(hào): MSM6542-01MS-K
廠(chǎng)商: LAPIS SEMICONDUCTOR CO LTD
元件分類(lèi): 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO20
封裝: 0.250 INCH, PLASTIC, SSOP-20
文件頁(yè)數(shù): 42/55頁(yè)
文件大?。?/td> 361K
代理商: MSM6542-01MS-K
Semiconductor
MSM6542-010/2/03
113
Method 3 (for each second carry)
(a) Setting (d2, d1, d0) at (1, 0, 1) in method 2 (periodical readout) described above
(b) Polling
Read CF register
RF = 1 ?
Idling
N
* 1
* 3
Idling for 3 s
Read clock registers
Read CF register
RF = 0 ?
Discard read
data
Use read data
N
Y
* 2
Y
*1
Processing by other IC or wait time to prevent
unnecessary readouts which occur frequently.
A measure is 50 ms.
*2
Time required to increment the ripple counter
*3
Loop to retry read because of a carry generated
during clock register reading
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