- 您现在的位置：买卖IC网 > PDF目录20877 > LTC3220IPF-1#PBF (Linear Technology)IC LED DRVR QVGA DISPLAY 28UTQFN PDF资料下载
参数资料
| 型号： | LTC3220IPF-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 15/20页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR QVGA DISPLAY 28UTQFN |
| 标准包装： | 91 |
| 拓扑： | 开路漏极，升压（升压），切换式电容器（充电泵） |
| 输出数： | 18 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | LED 闪烁器 |
| 频率： | 850kHz ~ 1.05MHz |
| 电源电压： | 2.9 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-UFQFN 裸露焊盘 |
| 供应商设备封装： | 28-UTQFN（4x4）裸露焊盘 |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
LTC3220/LTC3220-1
OPERATION
Bus Write Operation
The master initiates communication with the LTC3220/
LTC3220-1 with a START condition and a 7-bit address
followed by the write bit R/W = 0. If the address matches
that of the LTC3220/LTC3220-1, the LTC3220/LTC3220-1
return an acknowledge. The master should then deliver the
most signi?cant sub-address byte for the data register to
be written. Again the LTC3220/LTC3220-1 acknowledge and
then the data is delivered starting with the most signi?cant
bit. This cycle is repeated until all of the required data reg-
isters have been written. Any number of data latches can be
written. Each data byte is transferred to an internal holding
latch upon the return of an acknowledge. After all data
bytes have been transferred to the LTC3220/LTC3220-1,
the master may terminate the communication with a STOP
condition. Alternatively, a Repeat-START condition can be
initiated by the master and another chip on theI 2 C bus can
be addressed. This cycle can continue inde?nitely and the
LTC3220/LTC3220-1 will remember the last input of valid
data that it received. Once all chips on the bus have been
addressed and sent valid data, a global STOP condition
can be sent and the LTC3220/LTC3220-1 will update all
registers with the data that it had received.
In certain circumstances the data on the I 2 C bus may be-
come corrupted. In these cases the LTC3220/LTC3220-1
respond appropriately by preserving only the last set of
complete data that it has received. For example, assume
the LTC3220/LTC3220-1 has been successfully addressed
and is receiving data when a STOP condition mistakenly
occurs. The LTC3220/LTC3220-1 will ignore this STOP
condition and will not respond until a new START condi-
tion, correct address, sub-address and new set of data
and STOP condition are transmitted.
Likewise, if the LTC3220/LTC3220-1 were previously ad-
dressed and sent valid data but not updated with a STOP,
they will respond to any STOP that appears on the bus with
only one exception, independent of the number of Repeat-
START’s that have occurred. If a Repeat-START is given
and the LTC3220/LTC3220-1 successfully acknowledge
their addresses and ?rst byte, they will not respond to a
STOP until all bytes of the new data have been received
and acknowledged.
Quick Write
Registers REG1 to REG18 can be written in parallel by set-
ting Bit 0 of REG 0 high. When this bit is set high the next
write sequence to REG1 will write the data to REG1 through
REG18, which are all of the universal LED registers.
32201fc
15
相关PDF资料 |
PDF描述 |
|---|---|
| P51-15-S-H-MD-4.5V-000-000 | SENSOR 15PSI M12-1.5 6G .5-4.5V |
| P51-2000-S-Y-D-4.5V-000-000 | SENSOR 2000PSI 7/16-20-2B 4.5V |
| LTC3205EUF | IC LED DRVR WT/RGB BCKLGT 24-QFN |
| P51-75-S-AA-I36-20MA-000-000 | SENSOR 75PSIS 7/16 UNF 4-20 MA |
| P51-15-S-Z-I36-20MA-000-000 | SENSOR 15PSIS 1/4 NPT 4-20 MA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3220IPF-1-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:360mA Universal 18-Channel LED Driver |
| LTC3220IPF-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:360mA Universal 18-Channel LED Driver |
| LTC3220IPF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:360mA Universal 18-Channel LED Driver |
| LTC3221 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Regulated Charge Pump in 2 】 2 DFN |
| LTC3221-3.3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Regulated Charge Pump in 2 】 2 DFN |
发布紧急采购，3分钟左右您将得到回复。