- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄376952 > DS2415V 1-Wire Time Chip PDF資料下載
參數(shù)資料
| 型號(hào)： | DS2415V |
| 英文描述： | 1-Wire Time Chip |
| 中文描述： | 1 - Wire時(shí)鐘芯片 |
| 文件頁(yè)數(shù)： | 7/20頁(yè) |
| 文件大?。?/td> | 142K |
| 代理商： | DS2415V |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)當(dāng)前第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)
DS1385/DS1387
012496 7/20
The alternative flag bit usage method is with fully en-
abled interrupts. When an interrupt flag bit is set and the
corresponding interrupt enable bit is also set, the IRQ
pin is asserted low. IRQ is asserted as long as at least
one of the three interrupt sources has its flag and enable
bits both set. The IRQF bit in Register C is a one when-
ever the IRQ pin is being driven low. Determination that
the RTC initiated an interrupt is accomplished by read-
ing Register C. A logic one in bit–7 (IRQF bit) indicates
that one or more interrupts have been initiated. The act
of reading Register C clears all active flag bits and the
IRQF bit.
OSCILLATOR CONTROL BITS
When the DS1385/DS1387 is shipped from the factory,
the internal oscillator is turned off. This feature prevents
the lithium battery from being used until it is installed in a
system. A pattern of 010 in bits 6 through 4 of Register A
will turn the oscillator on and enable the countdown
chain. A pattern of 11X will turn the oscillator on, but
holds the countdown chain of the oscillator in reset. All
other combinations of bits 6 through 4 keep the oscilla-
tor off.
SQUARE WAVE OUTPUT SELECTION
Thirteen of the 15 divider taps are made available to a
1–of–15 selector, as shown in the block diagram of Fig-
ure 1. The first purpose of selecting a divider tap is to
generate a square wave output signal on the SQW pin.
The RS3–RS0 bits in Register A establish the square
wave output frequency. These frequencies are listed in
Table 2. The SQW frequency selection shares its
1–of–15 selector with the periodic interrupt generator.
Once the frequency is selected, the output of the SQW
pin can be turned on and off under program control with
the square wave enable bit (SQWE).
PERIODIC INTERRUPT RATE AND SQUARE WAVE OUTPUT FREQUENCY
Table 2
SELECT BITS REGISTER A
t
PERIODIC
INTERRUPT RATE
SQW OUTPUT
FREQUENCY
RS3
RS2
RS1
RS0
0
0
0
0
None
None
0
0
0
1
3.90625 ms
256 Hz
0
0
1
0
7.8125 ms
128 Hz
0
0
1
1
122.070
μ
s
8.192 KHz
0
1
0
0
244.141
μ
s
4.096 KHz
0
1
0
1
488.281
μ
s
2.048 KHz
0
1
1
0
976.5625
μ
s
1.024 KHz
0
1
1
1
1.953125 ms
512 Hz
1
0
0
0
3.90625 ms
256 Hz
1
0
0
1
7.8125 ms
128 Hz
1
0
1
0
15.625 ms
64 Hz
1
0
1
1
31.25 ms
32 Hz
1
1
0
0
62.5 ms
16 Hz
1
1
0
1
125 ms
8 Hz
1
1
1
0
250 ms
4 Hz
1
1
1
1
500 ms
2 Hz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2415X | 1-Wire Time Chip |
| DS1395 | RAMified Real Time Clock |
| DS1395S | RAMified Real Time Clock |
| DS1402D-41 | iButton Probe Component Parts |
| DS1402 | iButton Probe Component Parts |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2415X | 功能描述:IC TIME CHIP 1-WIRE CSP RoHS:否 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS（12/24 小時(shí)） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件 |
| DS2416FP00K | 制造商:Thomas & Betts 功能描述:200A,CON,3P4W,MG,416,3P208V,CC |
| DS2416FR000 | 制造商:Thomas & Betts 功能描述:200A,REC,3P4W,MG,416,3P208V,SC |
| DS2416FRAB0 | 制造商:Thomas & Betts 功能描述:200A,REC.,3P4W,3PHASE,208V |
| DS2416MP000 | 制造商:Thomas & Betts 功能描述:DS2416MP000 200A,PLG,3P4W,MG,416 制造商:Thomas & Betts 功能描述:200A,PLG,3P4W,MG,416,3P208V |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。