ISL45041 Datasheet, PDF (2/7 Pages) Intersil Corporation – TFT-LCD I2C Programmable VCOM Calibrator

ISL45041
Pin Descriptions
PIN
TYPE PULL U/D
FUNCTION
OUT Output
Adjustable Sink Current Output Pin. The current sinks into the OUT pin is equal to the DAC setting times the
maximum adjustable sink current divided by 128. See SET pin function description for the maximum adjustable
sink current setting.
AVDD Supply
High-Voltage Analog Supply. Bypass to GND with 0.1µF capacitor.
WP
Input Pull-Down Write Protect. Active Low. To enable programming, connect to 0.7*VDD supply or greater. The WP pin is
designed for static control. It has an internal pull-down 150k resistor. To avoid possibly over-writing the
EEPROM contents, no frequency above 1Hz should be applied to this input. Care should be taken to avoid any
glitches on the input. When removing or applying mechanical jumpers, always ensure the VDD power is off. A
high to low transition on the WP pin results in the register contents being loaded with EEPROM data.
GND Supply
Ground connection.
VDD
SDA
SCL
Supply
In/Out
Input
System power supply input. Bypass to GND with 0.1µF capacitor.
I²C Serial Data Input and Output.
I²C Clock Input
SET Analog
Maximum Sink Current Adjustment Point. Connect a resistor from SET to GND to set the maximum adjustable
sink current of the OUT pin. The maximum adjustable sink current is equal to (AVDD/20) divided by RSET.
Block Diagram
ISL45041
AVDD
SCL
SDA
I²C INTERFACE
D<7:0>
128
DATA REGISTERS
ANALOG DCP AND
CURRENT OUTPUT
BLOCK
OUT
SET
WP
GND
VDD
7-BIT EEPROM
2
FN6189.3
August 12, 2010