ST8012 datasheet(20/47 Pages) SITRONIX

20 / 47 page

ST8012

V1.6

20/47

2004/09/08

PRECAUTIONS

Precautions when connecting or disconnecting the power supply

This IC has a high-voltage LCD driver, so a high current

that may flow if voltage is supplied to the LCD drive

power supply while the logic system power supply is

floating may permanently damage it. The details are as

follows,

When connecting the power supply, connect the LCD

drive power after connecting the logic system power.

Furthermore,

when

disconnecting

the

power,

disconnect the logic system power after disconnecting

the LCD drive power

And when connecting the logic power supply, the logic

condition of this IC inside is insecure. Therefore

connect the LCD drive power supply after resetting

logic condition of this IC inside on /DISPOFF function.

After that, cancel the /DISPOFF function after the LCD

drive power supply has become stable. Furthermore,

when disconnecting the power, set the LCD drive

output pins to level Vss on /DISPOFF function. Then

disconnect the logic system power after disconnecting

the LCD drive power.

When

connecting

the

power

supply,

the

recommended sequence shown here

VDD

VSS

VDD

VSS

VDD

VSS

VDD

XDISPOFF

ST8012 Datasheet(PDF) 20 Page - Sitronix Technology Co., Ltd.

ST8012 Datasheet(HTML) 20 Page - Sitronix Technology Co., Ltd.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Datasheet Download

Link URL