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PDF ST2226B Data sheet ( Hoja de datos )
| Número de pieza | ST2226B | |
| Descripción | PWM-Controlled Constant Current Driver | |
| Fabricantes | SiTI | |
| Logotipo |  |
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ST2226B
Version : A.002
Issue Date : 2005/02/23
File Name : SP-ST2226B-A.002.doc
Total Pages: 20
PWM-Controlled Constant Current Driver for LED
Displays
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 Pard,
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.
ST2226B
Pin Description
NAME PIN NO. I/O
DESCRIPTION
CMD[2:0] SDIP/SOP: I Encoded commands for data transfer, time division operation
22, 23, 24
and PWM display:
CMD[2:0]
Command
[000]: Mode-1 time division operation / No operation for
display
[001]: Mode-2 time division operation / No operation for
display
[010]: Data transfer enable (Shift-In)
[011]: Data latch strobe (Capture)
[100]: First LED emitting
[101]: Second LED emitting
[110]: LED emitting disable / IOUT disable (Stop)
[111]: Test mode
CMD commands are latched at the rising edges of DCLK.
There is one DCLK latency between Shift-in command
latched and data shift-in.
DIN SDIP/SOP: I Serial input for luminance data (time division mode-1/2)
25
DOUT SDIP/SOP: O Serial output for luminance data (time division mode-1/2).
18
DCLK SDIP/SOP: I Synchronous clock input for command and serial data
20 transfer. The input data of DIN is synchronous to rising edges
of DCLK, and transferred to DOUT on falling edges of DCLK.
GCLK SDIP/SOP: I Clock input for PWM operation.
19
IOUT0-15 SDIP/SOP: O LED driver outputs.
27, 28, 1, 2
3, 4, 5, 6, 9,
10, 11, 12
13, 14, 15,
16
REXT SDIP/SOP: O Driver current setting. LED current is set to a current value by
21 connecting an external resistor between REXT and GND.
VDD
SDIP/SOP: - Power supply
26
GND
SDIP/SOP: - Analog and digital ground
17
IGND SDIP/SOP: - Two ground-pin for driver outputs.
7, 8
ST2226B
Version：A.002
Page：4
5 Page 
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
Application Diagrams
ST2226B
ST2226B
Version：A.002
Page：10
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ST2226B.PDF ] | |
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