|
|
PDF DM631B Data sheet ( Hoja de datos )
| Número de pieza | DM631B | |
| Descripción | 16-CHANNEL CONSTANT CURRENT LED DRIVER | |
| Fabricantes | SiTi | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de DM631B (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
DM631B
Version
: PRE.001
Issue Date : 2008/09/12
File Name : SP-DM631B-PRE.001.doc
Total Pages : 31
16-CHANNEL CONSTANT CURRENT LED DRIVER
WITH 12-bit 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 , GCK terminals
DM631B
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 has noise happened. Since REXT (pin23), DAO (pin22), and GCK (pin21) are next to
each other, the most possible interference is caused by DAO or 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:PRE.001 Preliminary
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
DM631B
Serial Data Interface
The serial-in data (DAI) data 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 one frame data. The
serial-out data (DAO) will be shifted out on synchronization of the clock (DCK).
Input Data clock-in sequence
The sequence of the grayscale PWM luminous data of a driver showed as following diagram.
The input data sequence of input data is from the MSB of OUT15 (D15 [11:0]) to the LSB of OUT0
(D0 [11:0]) by time passing.
shift in first
D15 [11]
MSB
D14 [11]
MSB
D15 [10]
D14 [10]
D15[9]
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]
D 15[0]
LSB
D14 [0]
LSB
D0[11]
MSB
D0 [10]
D0 [9]
D0[8]
D0 [7]
OUT 0
D0[6]
D0 [5]
D0 [4]
D0 [3]
D0[2]
D0 [1]
D0 [0]
LSB
D[11]×211+D[10]×210+D[9] ×29+D[8] ×28+D[7] ×2 7+D[6]×26+D[5] ×25+D[4]× 24+D[3]×23+D[2]×22+D[1]× 21+D[0] ×20
Active width per frame(%) =
4096
Serial-out Data clock-out sequence
The data serial out from DAO include latched grayscale data and the LSB of each output data
covered by detection message (ERR) after LAT pulse be active. The serial out sequence of the
data is from the MSB of OUT15 (D15 [11:0]) to the LSB of OUT0 (D0 [11:0]) by time passing.
shift out first
D15 [11]
MSB
D15 [10]
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]
ERR [15]
LSB
D14[1]
ERR[14 ]
LSB
D 0[11]
MSB
D0 [10]
D0 [9]
D0[8]
D0 [7]
OUT 0
D0[6]
D0 [5]
D0 [4]
D0 [3]
D0[2]
D0 [1]
ERR[0]
LSB
*ERR[11], ERR[10],… ,ERR[0] are Error Message of LED Open Detection. ｀1＇is normal, and ｀0＇is abnormal.
16-channel 12-bit PWM Constant Current LED Driver Version:PRE.001 Preliminary
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 30 Páginas | |
| PDF Descargar | [ Datasheet DM631B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DM631 | 16-CHANNEL CONSTANT CURRENT LED DRIVER | SiTi |
| DM631B | 16-CHANNEL CONSTANT CURRENT LED DRIVER | SiTi |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |