ADT6610 ADtech, ADT6610 Datasheet - Page 11

• Manufacturer Part Number: ADT6610
• Description: 3-CH Constant current LED sink driver
• Manufacturer: ADtech

www.DataSheet.co.kr
Aug. 25. 2011
OPERATION PRINCIPLE
Interface
The ADT6610 is a two-wire only transmission interface. It is similar to SPI interface (CKI, DI). The display
data (DI) transfers at the rising edge of the clock (CKI). And the output data (DO) is out at the falling edge
of the clock ( CKI ).
Embedded Voltage Regulator
The ADT6610 has an embedded voltage regulator to regulate the high input supply voltage to 5V supply
voltage for internal . The input voltage range is 10 ~ 18V, which is suitable for 12/16V system.
The high supply voltage is connected the VCC, and the output of the regulator is connected to VDD.
An external capacitor of 4.7uF should be connected between VDD and ground to stable the output voltage.
When the input voltage is 5V, the VCC and VDD pins should be connecting.
Setting the Gray Scale
The ADT6610 provides three selectable gray scale modes: 16bit gray scale mode, 12bit gray scale mode
gray scale mode provides 4,096 gray scales for each LED. In addition, the ADT6610 also embedded with an
oscillator as the clock of PWM counter to turn on output ports according to the gray scale data sent from the
system controller.
Strobe Method
The ADT6610 provides two selectable strobe time. It is selected 20us or 5ms by STSEL pin.
When the CLK high period is longer than 20us at STSEL low or 5ms at STSEL high, the gray scale data
are fetched register by internal strobe signal.
and 8bit gray scale mode. The 16bit gray scale mode provides 65,536 gray scales for each LED. The 12bit
Value
CKI
DI
MODE0 pin
STSEL pin
0
0
1
1
0
1
* This specifications are subject to be changed without notice
0
0
MODE1 pin
1
0
1
0
1
1
The CKI wait time for internal strobe signal
11/21
1
0
20us
5ms
1
12bit interface mode
16bit interface mode
8bit interface mode
1
MODE
Inhibit
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ADT6610
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