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參數(shù)資料
| 型號： | DS2405+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SWITCH ADDRESS NCH O-D TO-92 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 接口： | 1 線 |
| 電源電壓： | 2.8 V ~ 6 V |
| 封裝/外殼： | TO-226-3、TO-92-3 標(biāo)準(zhǔn)主體 |
| 供應(yīng)商設(shè)備封裝： | TO-92-3 |
| 包裝： | 管件 |
| 安裝類型： | 通孔 |
DS2405
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3. The master reads 1 bit from the 1-Wire bus. Each device will respond by placing the value of the first
bit of its respective ROM data onto the 1-Wire bus. Devices 1 and 4 will place a 0 onto the 1-Wire
bus; that is, they pull it low. Devices 2 and 3 will send a 1 by allowing the line to stay high. The result
is the logical AND of all devices on the line; therefore the master reads a 0. The master will issue
another read time slot. Since the ROM Search command is being executed, all devices respond to this
second read by placing the complement of the first bit of their respective ROM data onto the 1-Wire
Bus. Devices 1 and 4 will send a 1; devices 2 and 3 will send a 0. Thus the 1-Wire bus will be pulled
low. The master again reads a 0 for the complement of the first ROM data bit. This tells the master
that there are devices on the bus that have a 0 in the first position and others that have a 1. If all
devices had a 0 in this bit position, the reading would be 01; if the bit position contained a 1, the result
would be 10. (Note that the 11 condition indicates that no devices are present on the 1-Wire bus.)
4. The master now decides to write a 0 on the 1-Wire bus. This deselects Devices 2 and 3 for the
remainder of the search pass, leaving only devices 1 and 4 participating in the search process.
5. The master performs two more reads and receives a 0 followed by a 1 bit. This indicates that all active
devices have a 0 in this bit position of their ROM.
6. The master then writes a 0 to keep devices 1 and 4 selected.
7. The master executes two reads and receives two 0 bits. This again indicates that both 1 and 0 exist as
the third bit of the ROM of the active devices.
8. The master again writes a 0. This deselects device 1, leaving device 4 as the only active device.
9. Subsequent reads to the end of the ROM will not show bit conflicts. Therefore, they directly tell the
master the ROM contents of the active device. After having learned any new ROM bit, the master has
to resend this bit to keep the device selected. As soon as all ROM bits of the device are known and the
last bit is resent by the master, the device is ready to output the state of the PIO pin using additional
read time slots.
10. The master must learn the other devices’ ROM data. Therefore, it starts another ROM Search
sequence by repeating steps 1 through 7.
11. At the highest bit position, where the master wrote a 0 at the first pass (step 8), it now writes a 1. This
deselects device 4, leaving device 1 active.
12. As in step 9, subsequent reads to the end of the ROM will not show bit conflicts. This completes the
second ROM Search pass where the master has learned another ROM’s contents.
13. The master must learn the other devices’ ROM data. Therefore, it starts another ROM Search
sequence by repeating steps 1 to 3.
14. At the second highest bit position where the master wrote a 0 at the first pass (step 4), it now writes a
1. This deselects devices 1 and 4, leaving devices 2 and 3 active.
15. The master sends two read time slots and receives two 0 bits, indicating a bit conflict.
16. The master again decides to write a 0. This deselects device 3, leaving device 2 as the only active
device.
17. As in step 9, subsequent reads to the end of the ROM will not show bit conflicts. This completes the
third ROM Search pass where the master has learned another ROM’s contents.
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| DS2411P+T&R | IC SILICON SERIAL NUMBER 6TSOC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2405/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Addressable Switch |
| DS2405/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Addressable Switch |
| DS2405/T&R | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS2405/TR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| DS2405_07 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Addressable Switch |
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