PCF8576C datasheet(33/57 Pages) NXP

33 / 57 page

PCF8576C

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Product data sheet

Rev. 10 — 22 July 2010

33 of 57

NXP Semiconductors

PCF8576C

Universal LCD driver for low multiplex rates

[1]

VLCD ≤ VDD − 3 V for 1⁄3 bias.

[2]

LCD outputs are open-circuit; inputs at VSS or VDD; external clock with 50 % duty factor; I2C-bus inactive.

[3]

Resets all logic when VDD < VPOR.

[4]

Periodically sampled, not 100 % tested.

[5]

Outputs measured one at a time.

10.1 Typical supply current characteristics

LCD outputs

VBP

voltage on pin BP

Cbpl = 35 nF; on pins BP0 to BP3

−20

+20

voltage on pin S

Csgm = 5 nF; on pins S0 to S39

−20

+20

RBP

resistance on pin BP

VLCD =VDD − 5 V; on pins BP0 to BP3 [5] --

resistance on pin S

VLCD =VDD − 5 V; on pins S0 to S39

[5]

7.5

Table 15.

Static characteristics …continued

VDD = 2.0 V to 6.0 V; VSS = 0 V; VLCD = VDD − 6.0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDD = 5 V; VLCD = 0 V; Tamb = 25 °CVDD = 5 V; VLCD = 0 V; Tamb = 25 °C

Fig 22. ISS as a function of ffr

Fig 23.

−I

DD(LCD) as a function of ffr

mbe530

200

100

ISS

(

μA)

ffr (Hz)

normal

mode

power-saving

mode

mbe529

200

100

ffr (Hz)

−IDD(LCD)

(

μA)

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