- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄223667 > DS2720CU/T&R (MAXIM INTEGRATED PRODUCTS INC) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 PDF資料下載
參數(shù)資料
| 型號： | DS2720CU/T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MICRO, SOP-8 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大小： | 264K |
| 代理商： | DS2720CU/T&R |
DS2720
13 of 21
Figure 10. 1-WIRE BUS INTERFACE CIRCUITRY
TRANSACTION SEQUENCE
The protocol for accessing the DS2720 through the 1-Wire port is as follows:
§ Initialization
§ Net Address Command
§ Function Command
§ Transaction/Data
The sections that follow describe each of these steps in detail.
All transactions of the 1-Wire bus begin with an initialization sequence consisting of a reset pulse
transmitted by the bus master followed by a presence pulse simultaneously transmitted by the DS2720
and any other slaves on the bus. The presence pulse tells the bus master that one or more devices are on
the bus and ready to operate. For more details, see the 1-Wire Signaling section.
NET ADDRESS COMMANDS
Once the bus master has detected the presence of one or more slaves, it can issue one of the ROM
commands described in the following paragraphs. The name of each net address command is followed by
the 8-bit opcode for that command in square brackets. Figure 11 presents a transaction flowchart of the
ROM commands.
Read Net Address [33h or 39h].
This command allows the bus master to read the DS2720’s 1-Wire net
address. This command can only be used if there is a single slave on the bus. If more than one slave is
present, a data collision occurs when all slaves try to transmit at the same time (open drain produces a
wired-AND result). The RNAOP bit in the status register selects the opcode for this command, with
RNAOP = 0 indicating 33h and RNAOP = 1 indicating 39h.
Match Net Address [55h].
This command allows the bus master to specifically address one DS2720 on
the 1-Wire bus. Only the addressed DS2720 responds to any subsequent function command. All other
slave devices ignore the function command and wait for a reset pulse. This command can be used with
one or more slave devices on the bus.
0.5
mA
(typ)
100
W
MOSFET
Tx
Rx
Tx
Rx = RECEIVE
Tx = TRANSMIT
+VPULLUP
(2.0V TO 5.5V)
4.7k
W
BUS MASTER
DS2720 1-WIRE PORT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS36F95J | EIA-485/EIA-422A Differential Bus Transceiver |
| DS36F95 | EIA-485/EIA-422A Differential Bus Transceiver |
| DS4302Z-019/T&R | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| DS75162AN | IEEE-488 GPIB Transceivers |
| DS75162A | IEEE-488 GPIB Transceivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2720K | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Li+ Battery Protector Evaluation Kit |
| DS2722-F-03 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet |
| DS2722-F-04 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet |
| DS2722-F-05 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:900MHz Low-IF 1.5Mbps FSK Transceiver Final Datasheet |
| DS2725EVKIT+ | 制造商:Maxim Integrated Products 功能描述:DS2725 EVAL KIT - Boxed Product (Development Kits) |
發(fā)布緊急采購，3分鐘左右您將得到回復。