PCA85232DA datasheet(32/54 Pages) NXP

32 / 54 page

PCA85232

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Product data sheet

Rev. 1 — 8 December 2010

32 of 54

NXP Semiconductors

PCA85232

LCD driver for low multiplex rates

[1]

LCD outputs are open-circuit; inputs at VSS or VDD; I2C-bus inactive; VLCD = 8.0 V, VDD = 5.0 V and RAM written with all logic 1.

[2]

External clock with 50 % duty factor.

[3]

For typical values, see Figure 20

[4]

For typical values, see Figure 21

[5]

Variation between any 2 backplanes on a given voltage level; static measured.

[6]

Variation between any 2 segments on a given voltage level; static measured.

LCD outputs

ΔV

output voltage variation

on pins BP0 to BP3 and S0 to S159

[5][6]

−30

+30

output resistance

VLCD = 5 V

on pins BP0 to BP3

1.5

on pins S0 to S159

2.0

Table 18.

Static characteristics …continued

VDD = 1.8 V to 5.5 V; VSS = 0 V; VLCD = 1.8 V to 8.0 V; Tamb = −40 °C to +95 °C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

(1) IDD internal is measured with the internal oscillator.

(2) IDD external is measured with an external clock.

Tamb =30 °C; 1:4 multiplex; VLCD = 8 V; all RAM written with logic 1; no display connected.

Fig 20. IDD with respect to VDD

VDD (V)

001aal525

IDD

(

μA)

(2)

(1)

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