參數(shù)資料
型號: DS17885E-5
廠商: DALLAS SEMICONDUCTOR
元件分類: Timer or RTC
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO28
封裝: TSOP-28
文件頁數(shù): 6/38頁
文件大小: 407K
代理商: DS17885E-5
DS17885/DS17887
14 of 38
PERIODIC INTERRUPT RATE AND SQUARE WAVE OUTPUT FREQUENCY
Table 2
EXT. REG. B
SELECT BITS REGISTER A
E32K
RS3
RS2
RS1
RS0
tPI PERIODIC
INTERRUPT RATE
SQW OUTPUT
FREQUENCY
0
None
0
1
3.90625 ms
256 Hz
0
1
0
7.8125 ms
128 Hz
0
1
122.070 s
8.192 kHz
0
1
0
244.141 s
4.096 kHz
0
1
0
1
488.281 s
2.048 kHz
0
1
0
976.5625 s
1.024 kHz
0
1
1.953125 ms
512 Hz
0
1
0
3.90625 ms
256 Hz
0
1
0
1
7.8125 ms
128 Hz
0
1
0
1
0
15.625 ms
64 Hz
0
1
0
1
31.25 ms
32 Hz
0
1
0
62.5 ms
16 Hz
0
1
0
1
125 ms
8 Hz
0
1
0
250 ms
4 Hz
0
1
500 ms
2 Hz
1
X
*
32.768 kHz
*RS3-RS0 determine periodic interrupt rates as listed for E32K=0.
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