S1F87110B0A Epson Electronics America, Inc., S1F87110B0A Datasheet - Page 6

• Manufacturer Part Number: S1F87110B0A
• Description: Led Controller
• Manufacturer: Epson Electronics America, Inc.

4. DESCRIPTION OF BLOCK DIAGRAM
S1F87110B0A Series Technical Manual (Rev.1.0)
Sensor processor
Automatic luminance control algorithm
Control signal generator for LED driver for LED backlight
I
Evaluates ambient brightness using current value that flows through the luminance sensor on the scale of 1
to 16.
Either of photo IC (current output) type or photodiode type luminance sensor can be connected.
Based on the brightness evaluated by the sensor processor, it controls PWM duty for changing LED
brightness in a linear mode according to the ambient brightness.
Relationship between brightness evaluation and rate of change for PWM duty can be customized with
registers.
Outputs PWM signals to the LED driver for brightness control.
PWM signal cycles and phases can be changed with registers.
The I
By sending specific commands from the I
enabling advanced setting to this IC.
* I
2
C interface
2
C is referred for two-wire serial interface specifications proposed by Philips.
2
C slave controller is provided with the S1F87110.
2
C master to the I
EPSON
4. DESCRIPTION OF BLOCK DIAGRAM
2
C controller, it serves as an I
2
C slave device,
3