HT9B95 datasheet(26/32 Pages) HOLTEK

Part #	HT9B95

Description	RAM Mapping 39횞8 / 43횞4 LCD Driver

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	HOLTEK [Holtek Semiconductor Inc]

Direct Link	http://www.holtek.com

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26 / 32 page

Rev. 1.10

November 25, 2015

HT9B95A/B/G

Power Supply Sequence

• IfthepowerisindividuallysuppliedontheLCDandVDDpins,itisstronglyrecommendedtofollowthe

Holtekpowersupplysequencerequirement.

• Ifthepowersupplysequencerequirementisnotfollowed,itmayresultinmalfunction.

HoltekPowerSupplySequenceRequirement:

1.Power-onsequence:

TurnonthelogicpowersupplyVDDfirstandthenturnontheLCDdriverpowersupplyVLCD.

2.Power-offsequence:

TurnofftheLCDdriverpowersupplyVLCD.FirstandthenturnoffthelogicpowersupplyVDD.

3.TheHoltekPowerSupplySequenceRequirementmustbefollowednomatterwhethertheVLCDvoltageis

higherthantheVDDvoltage.

• WhentheVLCDvoltageissmallerthanorisequaltoVDDvoltageapplication

Voltage

Time

VLCD

VDD

1µs

VDD

VLCD

1µs

• WhentheVLCDvoltageisgreaterthanVDDvoltageapplication

VLCD

1µs

VDD

VLCD

1µs

Time

VDD

Voltage

HT9B95 Datasheet(PDF) 26 Page - Holtek Semiconductor Inc