PCF8536AT datasheet(57/74 Pages) NXP

57 / 74 page

PCF8536

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Product data sheet

Rev. 2 — 21 February 2012

57 of 74

NXP Semiconductors

PCF8536

Universal LCD low multiplex driver with 6 channel PWM generator

[1]

Power-down mode is enabled; I2C-bus or SPI-bus inactive.

[2]

1:8 multiplex drive mode; 1⁄4 bias; display enabled; LCD outputs are open circuit; RAM is all written with logic 1; inputs at VSS or VDD;

default display prescale factor; I2C-bus or SPI-bus inactive.

[3]

1:8 multiplex drive mode; 1⁄4 bias; display enabled; LCD outputs are open circuit; RAM is all written with logic 1; inputs at VSS or VDD;

default display prescale factor; I2C-bus or SPI-bus inactive; six PWM channels active at 50 % duty.

[4]

Strongly linked to VLCD voltage. See Figure 44.

[5]

1:8 multiplex drive mode; 1⁄4 bias; display enabled; LCD outputs are open circuit; RAM is all written with logic 1; default display prescale

factor.

[6]

The I2C-bus interface of PCF8536 is 5 V tolerant.

[7]

Variation between any two backplanes on a given voltage level; static measured.

[8]

Variation between any two segments on a given voltage level; static measured.

[9]

Outputs measured one at a time.

LCD outputs

V

output voltage variation

on pins BP0 to BP7

[7] -2.5

+10

on pins S0 to S43

[8] -2.5

+10

output resistance

VLCD = 7 V;

on pins BP0 to BP7

[9] -0.9

5.0



VLCD = 7 V;

on pins S0 to S43

[9] -1.5

6.0



Table 43.

Static characteristics …continued

VDD = 1.8 V to 5.5 V; VSS = 0 V; VLCD = 2.5 V to 9.0 V; Tamb = 40 C to +85 C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

1:8 multiplex drive mode; 1⁄4 bias; internal oscillator; display enabled; LCD outputs are open circuit;

RAM is all written with logic 1; inputs at VSS or VDD; default display prescale factor; I2C-bus or

SPI-bus inactive. Typical is defined at VDD = 3.3 V, 25 C.

Fig 43. Typical IDD with respect to temperature

013aaa503

Tamb (ºC)

-45

-10

IDD

(µA)

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