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PDF DM633 Data sheet ( Hoja de datos )
| Número de pieza | DM633 | |
| Descripción | 16-CHANNEL CONSTANT CURRENT LED DRIVER | |
| Fabricantes | SiTi | |
| Logotipo |  |
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DM633
Version
: A.002
Issue Date : 2008/05/12
File Name : SP-DM633-A.002.doc
Total Pages : 26
16-CHANNEL CONSTANT CURRENT LED DRIVER
WITH PROGRAMMABLE PWM OUTPUTS
新竹市科學園區展業一路 9 號 7 樓之 1
SILICON TOUCH TECHNOLOGY INC.
9-7F-1, Prosperity Road I, Science Based Industrial Park,
Hsin-Chu, Taiwan 300, R.O.C.
Tel：886-3-5645656 Fax：886-3-5645626
1 page  
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
新竹市科學園區展業一路 9 號 7 樓之 1
9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.
Tel：886-3-5645656 Fax：886-3-5645626
Equivalent Circuit of Inputs and Outputs
1. DCK, DAI, LAT , SOMODE/GCK terminals
DM633
2. DAO terminals
PCB Layout Consideration
To connect an external resistor to REXT pin and ground can determine the maximum output
current. If there is any disturbance occurred to REXT pin, the constant current output may be
unstable or noisy. Since REXT (pin23), DAO (pin22), and SOMODE/GCK (pin21) are next to each
other, the most possible interference is caused by DAO or SOMODE/GCK signal. Accordingly, it is
recommended that adding some shielding area within the above pins in PCB layout, or laying the
signal line of above pins on different PCB layer will prevent the noise problems effectively.
16-channel 12-bit PWM Constant Current LED Driver Version : A.002
未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 4
5 Page 
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
新竹市科學園區展業一路 9 號 7 樓之 1
9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.
Tel：886-3-5645656 Fax：886-3-5645626
DM633
Serial Data Interface
The serial-in data (DAI) will be clocked into 16 × 12 bit shift registers synchronized on the
rising edge of the clock (DCK). The data will be transferred into the 16 × 12 bit latch registers
when the strobe signal ( LAT ) is kept at high level (level trigger); otherwise, the data will be held.
The latch pulse should be sent after the falling edge of the last clock within a frame data. The trigger
timing of the serial-out data (DAO) will be shifted out on synchronization to the rising edge of the
clock if serial out selection (SOMODE) is kept at low level. And if serial out selection (SOMODE)
is kept at high level, the serial-out data (DAO) will be shifted out on synchronization to the falling
edge of the clock (DCK). The definition of thermal flag (THF) is shown at page 11.
Input Data Format
Serial-out Data Format
shift out first
D15 [ 11 ]
MSB
THF
D15[9]
D14 [11]
MSB
D14 [10]
D14 [9]
D 15[8]
D 14[8]
D15 [7]
D14[7]
OUT 15
D15 [6]
D15[5]
OUT 14
D14 [6]
D14[5]
D15[4]
D14[4]
D 15[3]
D 14[3]
D15[2]
D14[2]
D15[1]
D14[1]
E[15]
LSB
E[14]
LSB
OUT 0
D0[11]
D0 [10]
D0 [9]
D0[8]
D0 [7]
D0[6]
D0 [5]
D0 [4]
D0 [3]
D0[2]
D0 [1]
E [0 ]
MSB
LSB
＊ E[15], E[14], ..., E[0] are Error Message of LED Open Detection. ｀1＇is normal, and ｀0＇is abnormal.
＊ THF is the Error Message of chip thermal detection.｀1＇is normal, and ｀0＇is abnormal.
16-channel 12-bit PWM Constant Current LED Driver Version : A.002
未經授權而逕予重製、複製、使用或公開本文件，行為人得被追究侵權之相關民刑事責任
Unauthorized reproduction, duplication, use or disclosure of this document will be deemed as infringement.
Page 10
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet DM633.PDF ] | |
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