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參數(shù)資料
| 型號： | TC665EUN |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO10 |
| 封裝： | PLASTIC, MSOP-10 |
| 文件頁數(shù)： | 8/36頁 |
| 文件大?。?/td> | 695K |
| 代理商： | TC665EUN |
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TC664/TC665
DS21737A-page 16
2002 Microchip Technology Inc.
The data on the line must be changed during the LOW
period of the clock signal. There is one clock pulse per
bit of data. Each data transfer is initiated with a START
condition and terminated with a STOP condition. The
number of the data bytes transferred between the
START and STOP conditions is determined by the
master device and is unlimited.
5.1.7
ACKNOWLEDGE (ACK)
Each receiving device, when addressed, is obliged to
generate an acknowledge bit after the reception of
each byte. The master device must generate an extra
clock pulse, which is associated with this acknowledge
bit.
The device that acknowledges has to pull down the
SDA line during the acknowledge clock pulse in such a
way that the SDA line is stable LOW during the HIGH
period of the acknowledge related clock pulse. Setup
and hold times must be taken into account. During
reads, a master device must signal an end of data to
the slave by not generating an acknowledge bit on the
last byte that has been clocked out of the slave. In this
case, the slave (TC664/TC665) will leave the data line
HIGH to enable the master device to generate the
STOP condition.
5.2
SMBus Protocols
The TC664/TC665 devices communicate with three
standard SMBus protocols. These are the write byte,
read byte and receive byte. The receive byte is a short-
ened method for reading from or writing to a register
which had been selected by the previous read or write
command. These transmission protocols are shown in
FIGURE 5-1:
SMBus Protocol: Write Byte Format.
FIGURE 5-2:
SMBus Protocol: Read Byte Format.
FIGURE 5-3:
SMBus Protocol: Receive Byte Format.
S
ADDRESS
WR
ACK
COMMAND
ACK
DATA
ACK
P
7 Bits
8 Bits
Slave Address
Command Byte: selects
which register you are
writing to.
Data Byte: data goes
into the register set
by the command byte.
S
ADDRESS
WR
ACK
COMMAND
ACK
7 Bits
8 Bits
Slave Address
Command Byte: selects
which register you are
writing to.
S
ADDRESS
RD
ACK
DATA
NACK
P
7 Bits
8 Bits
Slave Address:
repeated due to change
in data flow direction.
Data Byte: reads from
the register set by the
command byte.
S
ADDRESS
RD
ACK
DATA
NACK
P
7 Bits
8 Bits
Slave Address
Data Byte: reads data from
the register commanded by
the last Read Byte or Write
Byte transmission
S = Start Condition
P = Stop Condition
Shaded = Slave Transmission
ACK = Acknowledge = 0
NACK = Not Acknowledged = 1
WR = Write = 0
RD = Read = 1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC665EUNTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Single RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TC67 | 功能描述:鋁質(zhì)電解電容器 - 帶引線 40uF 350V RoHS:否 制造商:Kemet 引線類型: 電容:220 uF 容差:20 % 電壓額定值:25 V 工作溫度范圍: 端接類型:Radial 外殼直徑:8 mm 外殼長度:11 mm 引線間隔:5 mm 產(chǎn)品:General Purpose Electrolytic Capacitors 封裝:Bulk |
| TC670 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Tiny Predictive Fan Failure Detector |
| TC670_03 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Tiny Predictive Fan Failure Detector |
| TC670_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Tiny Predictive Fan Failure Detector |
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