參數(shù)資料
型號(hào)： BUF20820
英文描述： 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
中文描述： 18通道伽瑪雙通道可編程的VCOM電壓發(fā)生器
文件頁(yè)數(shù)： 10/32頁(yè)
文件大?。?/td> 1826K
代理商： BUF20820
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SBOS330C DECEMBER 2005 REVISED OCTOBER 2006
www.ti.com
10
addressed register, the master continues to send data for
the next register. The BUF20820 automatically and
sequentially steps through subsequent registers as
additional data is sent. The process continues until all
desired registers have been updated or a STOP condition
is sent.
To write to multiple DAC registers:
1.
Send a START condition on the bus.
2.
Send the device address and read/write bit = LOW.
The BUF20820 will acknowledge this byte.
3.
Send either the DAC_1 address byte to start at the first
DAC, or send the address byte for whichever DAC will
be the first in the sequence of DACs to be updated.
The BUF20820 will begin with this DAC and step
through subsequent DACs in sequential order.
4.
Send the bytes of data; begin by sending the most
significant byte (bits D15D8, of which only bits D9
and D8 have meaning, and bits D15D14 must not be
01), followed by the least significant byte (bits D7D0).
The first two bytes are for the DAC addressed in step
3 above. Its register is automatically updated after
receiving the second byte. The next two bytes are for
the following DAC. That DAC register is updated after
receiving the fourth byte. This process continues until
the registers of all following DACs have been updated.
The last address, 10100, is the address of the write
disable bit and cannot be accessed using this method.
It must be written using the
write to a single DAC
register
procedure.
5.
Send a STOP condition on the bus.
The BUF20820 will acknowledge each byte. To terminate
communication, send a STOP or START condition on the
bus. Only DAC registers that have received both bytes of
data will be updated.
Reading:
Reading a DAC register will return the data stored in the
DAC. This data can differ from the data stored in the DAC
register. See the
Output Latch
section.
To read the DAC value:
1.
Send a START condition on the bus.
2.
Send the device address and read/write bit = LOW.
The BUF20820 will acknowledge this byte.
3.
Send the DAC address byte. Bits D7D5 must be set
to 0; Bits D4D0 are the DAC address. Only DAC
addresses 00000 to 10100 are valid and will be
acknowledged. For address 10100, only D0 has
meaning. This bit is the write disable bit.
4.
Send a START or STOP/START condition on the bus.
5.
Send correct device address and read/write
bit = HIGH. The BUF20820 will acknowledge this
byte.
6.
Receive two bytes of data. They are for the specified
DAC. The first received byte is the most significant
byte (bits D15D8, only bits D9 and D8 have
meaning), the next byte is the least significant byte
(bits D7D0).
7.
Acknowledge after receiving the first byte.
8.
Do not acknowledge the second byte to end the read
transaction.
Communication may be terminated by sending a
premature STOP or START condition on the bus, or by not
sending the acknowledge.
To Read Multiple DACs:
1.
Send a START condition on the bus.
2.
Send the device address and read/write bit = LOW.
The BUF20820 will acknowledge this byte.
3.
Send either the DAC_1 address byte to start at the first
DAC, or send the address byte for whichever DAC will
be the first in the sequence of DACs to be read. The
BUF20820 will begin with this DAC and step through
subsequent DACs in sequential order.
4.
Send a START or STOP/START condition on the bus.
5.
Send correct device address and read/write
bit = HIGH. The BUF20820 will acknowledge this
byte.
6.
Receive two bytes of data. They are for the specified
DAC. The first received byte is the most significant
byte (bits D15D8, only bits D9 and D8 have
meaning), the next byte is the least significant byte
(bits D7D0).
7.
Acknowledge after receiving each byte of data except
for the last byte. The acknowledge bit of the last byte
should be HIGH to end the read operation.
8.
When all desired DACs have been read, send a STOP
or START condition on the bus.
Communication may be terminated by sending a
premature STOP or START condition on the bus, or by not
sending the acknowledge.
相關(guān)PDF資料
PDF描述
BUF20820AIDCPR 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
BUF20820AIDCPRE4 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels
BUF298AF TRANSISTOR | BJT POWER MODULE | INDEPENDENT | 450V V(BR)CEO | 50A I(C)
BUF298AV TRANSISTOR | BJT POWER MODULE | INDEPENDENT | 450V V(BR)CEO | 50A I(C)
BUF298F TRANSISTOR | BJT POWER MODULE | INDEPENDENT | 450V V(BR)CEO | 50A I(C)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BUF20820AIDCPR 功能描述:LCD Gamma緩沖器 18-Ch Vltg Generator w/2 Prog VCOM Chs RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 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:TQFN-38 封裝:Tube
BUF20820AIDCPRE4 功能描述:LCD Gamma緩沖器 18-Ch Vltg Generator w/2 Prog VCOM Chs RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 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:TQFN-38 封裝:Tube
BUF20820EVM 功能描述:放大器 IC 開發(fā)工具 BUF20800-BUF20820 Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
BUF22821 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory
BUF22821AIDCPR 功能描述:LCD Gamma緩沖器 Prgrmbl Gam-Vltg Gen & Vcom Calibrator RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 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:TQFN-38 封裝:Tube
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