PCF8537 datasheet(65/82 Pages) NXP

65 / 82 page

PCF8537

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Product data sheet

Rev. 1 — 31 May 2012

65 of 82

NXP Semiconductors

PCF8537

Industrial LCD driver for multiplex rates up to 1:8

VDD2 = 5.0 V; 1:8 multiplex drive mode; 1⁄4 bias; temperature measurement enabled; LCD outputs

are open circuit; RAM all logic 1; inputs at VSS or VDD; internal clock with max prescale factor; bus

active.

(1) Charge pump on; VDD1 = 5.5 V; charge pump configuration: VLCD =2  VDD2; VPR[7:0] set to

7.0 V; display enabled.

(2) Charge pump off; VDD1 = 5.0 V; display disabled.

Fig 55. Typical IDD1 with respect to temperature

VDD1 =VDD2 = 5.0 V; 1:8 multiplex drive mode; 1⁄4 bias; temperature measurement enabled; flat

temperature compensation; LCD outputs are open circuit; RAM all logic 1; inputs at VSS or VDD;

internal clock with max prescale factor; bus inactive; charge pump on; charge pump configuration:

VLCD =2  VDD2; VPR[7:0] set to 7.0 V; display enabled.

Fig 56. Typical IDD2 with respect to temperature

013aaa668

-60

-40

-20

100

110

120

130

140

150

160

Temperature (ºC)

IDD1

(μA)

(1)

(2)

013aaa669

-60

-40

-20

100

110

120

130

140

150

160

Temperature (ºC)

IDD2

(μA)

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