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參數(shù)資料
| 型號： | DS1693 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDMA28 |
| 封裝： | 0.740 INCH, MODULE, DIP-28 |
| 文件頁數(shù)： | 3/32頁 |
| 文件大?。?/td> | 381K |
| 代理商： | DS1693 |
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DS1689/DS1693
11 of 32
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
0000
None
0
0001
3.90625 ms
256 Hz
0
0010
7.8125 ms
128 Hz
0
0011
122.070
s
8.192 kHz
0
0100
244.141
s
4.096 kHz
0
0101
488.281
s
2.048 kHz
0
0110
976.5625
s
1.024 kHz
0
0111
1.953125 ms
512 Hz
0
1000
3.90625 ms
256 Hz
0
1001
7.8125 ms
128 Hz
0
1010
15.625 ms
64 Hz
0
1011
31.25 ms
32 Hz
0
1100
62.5 ms
16 Hz
0
1101
125 ms
8 Hz
0
1110
250 ms
4 Hz
0
1111
500 ms
2 Hz
1
XXXX
*
32.768 kHz
*RS3-RS0 determine periodic interrupt rates as listed for E32K=0.
The third method uses a periodic interrupt to determine if an update cycle is in progress. The UIP bit in
Register A is set high between the setting of the PF bit in Register C (see Figure 3). Periodic interrupts
that occur at a rate of greater than tBUC allow valid time and date information to be reached at each
occurrence of the periodic interrupt. The reads should be complete within (tPI / 2+tBUC) to ensure that data
is not read during the update cycle.
UPDATE-ENDED AND PERIODIC INTERRUPT RELATIONSHIP Figure 3
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PDF描述 |
|---|---|
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| DS1720S+ | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1720S | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1721S+T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1693+ | 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1697N WAF | 制造商:Texas Instruments 功能描述: |
| DS1699-010 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:ELECTRONIC DIGITAL RHEOSTAT |
| DS1699-10 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:ELECTRONIC DIGITAL RHEOSTAT |
| DS1699-100 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:ELECTRONIC DIGITAL RHEOSTAT |
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