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參數(shù)資料
| 型號： | C8051T606TDB |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 27/188頁 |
| 文件大?。?/td> | 0K |
| 描述： | CARD DAUGHTER MSOP SOCKET |
| 標準包裝： | 1 |
| 模塊/板類型： | MSOP 插口模塊 |
| 適用于相關(guān)產(chǎn)品： | C8051T606 |
| 產(chǎn)品目錄頁面： | 626 (CN2011-ZH PDF) |
| 相關(guān)產(chǎn)品： | 336-1663-6-ND - IC 8051 MCU 1.5K-EEPROM 10-QFN 336-1663-2-ND - IC 8051 MCU 1.5K-EEPROM 10-QFN 336-1664-5-ND - IC 8051 MCU 1.5K-EEPROM 10-MSOP 336-1663-1-ND - IC 8051 MCU 1.5K-EEPROM 10-QFN 336-1662-5-ND - IC 8051 MCU 1.5K-EEPROM 11-QFN |
| 其它名稱： | 336-1667 |
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C8051T600/1/2/3/4/5/6
122
Rev. 1.2
All transactions are initiated by a master, with one or more addressed slave devices as the target. The
master generates the START condition and then transmits the slave address and direction bit. If the trans-
action is a WRITE operation from the master to the slave, the master transmits the data a byte at a time
and waits for an ACK from the slave at the end of each byte. For READ operations, the slave transmits the
data and waits for an ACK from the master at the end of each byte. At the end of the data transfer, the
master generates a STOP condition to terminate the transaction and free the bus. Figure 23.3 illustrates a
typical SMBus transaction.
Figure 23.3. SMBus Transaction
23.3.1. Transmitter Vs. Receiver
On the SMBus communications interface, a device is the “transmitter” when it is sending an address or
data byte to another device on the bus. A device is a “receiver” when an address or data byte is being sent
to it from another device on the bus. The transmitter controls the SDA line during the address or data byte.
After each byte of address or data information is sent by the transmitter, the receiver sends an ACK or
NACK bit during the ACK phase of the transfer, during which time the receiver controls the SDA line.
23.3.2. Arbitration
A master may start a transfer only if the bus is free. The bus is free after a STOP condition or after the SCL
and SDA lines remain high for a specified time (see Section “23.3.5. SCL High (SMBus Free) Timeout” on
page 123). In the event that two or more devices attempt to begin a transfer at the same time, an arbitra-
tion scheme is employed to force one master to give up the bus. The master devices continue transmitting
until one attempts a HIGH while the other transmits a LOW. Since the bus is open-drain, the bus will be
pulled LOW. The master attempting the HIGH will detect a LOW SDA and lose the arbitration. The winning
master continues its transmission without interruption; the losing master becomes a slave and receives the
rest of the transfer if addressed. This arbitration scheme is non-destructive: one device always wins, and
no data is lost.
23.3.3. Clock Low Extension
SMBus provides a clock synchronization mechanism, similar to I2C, which allows devices with different
speed capabilities to coexist on the bus. A clock-low extension is used during a transfer in order to allow
slower slave devices to communicate with faster masters. The slave may temporarily hold the SCL line
LOW to extend the clock low period, effectively decreasing the serial clock frequency.
23.3.4. SCL Low Timeout
If the SCL line is held low by a slave device on the bus, no further communication is possible. Furthermore,
the master cannot force the SCL line high to correct the error condition. To solve this problem, the SMBus
protocol specifies that devices participating in a transfer must detect any clock cycle held low longer than
25 ms as a “timeout” condition. Devices that have detected the timeout condition must reset the communi-
cation no later than 10 ms after detecting the timeout condition.
SLA6
SDA
SLA5-0
R/W
D7
D6-0
SCL
Slave Address + R/W
Data Byte
START
ACK
NACK
STOP
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| C8051T606ZDB | 功能描述:子卡和OEM板 QFN10 (2x2mm) Socket Daughter Card RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| C8051T606-ZM | 功能描述:8位微控制器 -MCU 1.5K OTP EPROM MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| C8051T606-ZMR | 功能描述:8位微控制器 -MCU 1.5K OTP EPROM MCU RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| C8051T610DB24 | 功能描述:仿真器/模擬器 C8051T610 Family Socket Daughtr Board RoHS:否 制造商:Blackhawk 產(chǎn)品:System Trace Emulators 工具用于評估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
| C8051T610DB28 | 功能描述:子卡和OEM板 C8051T610 Family Socket Daughtr Board RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
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