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STVM100DS6F bảng dữ liệu(PDF) 1 Page - STMicroelectronics

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STVM100DS6F bảng dữ liệu(HTML) 1 Page - STMicroelectronics

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July 2007
Rev 6
1/27
1
STVM100
I2C LCD VCOM calibrator
Features
I2C interface, slave address: 1001111
7-bit adjustable sink current output
2.25V to 3.6V logic supply voltage VDD
AVDD operating voltages
– 4.5V to 20V for VDD from 2.6V to 3.6V
– 4.5V to 13V for VDD from 2.25V to 3.6V
EEPROM for storing the optimum VCOM setting
Guaranteed monotonic output over operating
range
400kHz maximum interface bus speed
Operating temperature: –40°C to 85°C
Available in an 8-pin 3mm x 3mm TDFN8 or
3mm x 3mm TSSOP8 Package
Applications
TFT-LCD panels
Description
The STVM100 is a programmable VCOM adjust-
ment solution for thin-film transistor (TFT) liquid-
crystal displays (LCDs) to remove “flickers”. It can
replace a mechanical potentiometer, so that the
factory operator can physically view the front
screen when performing the VCOM adjustment.
This significantly reduces labor costs, increases
reliability, and enables automation.
STVM100 provides a digital I2C interface to con-
trol the sink current output (IOUT). This output
drives an external resistive voltage divider, which
can then be applied to an external VCOM buffer.
Three external resistors R1, R2, and RSET deter-
mine the highest and lowest value of the VCOM.
An increase in the output sink current will lower
the voltage on the external divider so that the
VCOM can be adjusted by 128 steps within this
range. Once the desired VCOM setting is
achieved, it can be stored in the internal
EEPROM that will be automatically recalled dur-
ing each power-up.
STVM100 is available in an 8-pin, 3mm x 3mm
TDFN8 or 3mm x 3mm TSSOP8 package.
TDFN8 (3mm x 3mm) (DC)
TSSOP8 (3mm x 3mm) (DS)
Table 1.
Device summary
Order code
Optimum temperature range
Package
Packing
STVM100DC6E
-40°C to 85°C
TDFN
ECOPACK package, tubes
STVM100DS6F
-40°C to 85°C
TSSOP
ECOPACK package, tape and reel
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