PCA9620 datasheet(19/71 Pages) NXP

Part #	PCA9620

Description	Universal LCD driver for low multiplex rates

PDF	71 Pages

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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PCA9620

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Product data sheet

Rev. 1 — 9 December 2010

19 of 71

NXP Semiconductors

PCA9620

Universal LCD driver for low multiplex rates

Fig 11. Recommended power-down sequence when using an external supplied VLCD and

the internal clock signal

Fig 12. Recommended power-down sequence when using the internal charge pump and

an external clock signal

START

Disable dis-

play by setting

bit E logic 0

Disable tem-

perature mea-

surement by

setting bit

TME logic 0

013aaa254

STOP

Stop genera-

tion of VLCD

by setting bit

CPE logic 0

START

Disable dis-

play by setting

bit E logic 0

Disable tem-

perature mea-

surement by

setting bit

TME logic 0

013aaa255

STOP

External

clock may

be switched

off

Bring pin CLK

to 3-state by

setting bit

OSC and bit

COE logic 0

PCA9620 Datasheet(PDF) 19 Page - NXP Semiconductors

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