PCF8537BH1 datasheet(11/82 Pages) NXP

Part #	PCF8537BH1

Description	Industrial LCD driver for multiplex rates up to 1:8

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Manufacturer	NXP [NXP Semiconductors]

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PCF8537

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Product data sheet

Rev. 1 — 31 May 2012

11 of 82

NXP Semiconductors

PCF8537

Industrial LCD driver for multiplex rates up to 1:8

8.1.7 Command: Set-VPR

With these two instructions, it is possible to set the target VLCD voltage for the internal

charge pump.

[1]

Default value.

[2]

VPR[7:0] = 0h results in Vprog(LCD) =3V;

VPR[7:0] = C8h results in Vprog(LCD) =9V.

8.1.8 Command: Display-enable

This command allows switching the display on and off. The possibility to disable and

enable the display allows implementation of blinking the entire display under external

control.

[1]

Default value.

Table 11.

Set-VPR - set VPR command bit description

For further information, see Section 8.4.2 on page 25.

Bit

Symbol

Binary value

Description

Set-VPR MSB

7 to 4

-

0100

fixed value

3 to 0

VPR[7:4]

0000[1] to

1111[2]

the four most significant bits of VPR[7:0]

Set-VPR LSB

7 to 4

-

0101

fixed value

3 to 0

VPR[3:0]

0000[1] to

1111[2]

the four least significant bits of VPR[7:0]

Table 12.

Display-enable - display enable command bit description

Bit

Symbol

Binary value

Description

7 to 1

-

0011100

fixed value

0E

0[1]

display disabled

backplane and segment outputs are internally

connected to VSS

1

display enabled

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