PCF8532 datasheet(28/44 Pages) NXP

28 / 44 page

PCF8532_1

Product data sheet

Rev. 1 — 10 February 2009

28 of 44

NXP Semiconductors

PCF8532

Universal LCD driver for low multiplex rates

10. Static characteristics

[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]

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

[4]

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

Table 17.

Static characteristics

VDD = 1.8 V to 5.5 V; VSS = 0 V; VLCD = 2.5 V to 8.0 V; Tamb = −40 °C to +85 °C; unless otherwise speciﬁed.

Symbol Parameter

Conditions

Min

Typ

Max

Unit

Supplies

VDD

supply voltage

1.8

5.5

VLCD

LCD supply voltage

1.8

8.0

IDD

supply current

fclk(ext) = 1.800 kHz

[1][2

]

-4

µA

with internal oscillator running

[1]

-18

µA

IDD(LCD) LCD supply current

fclk(ext) = 1.800 kHz

[1][2

]

-30

µA

with internal oscillator running

[1]

-30

µA

Logic

input voltage

on pins SDA, SDAACK and SCL

−0.5

5.5

all other input pins

−0.5

(VDD + 0.5) ≤ 5.5 V

VIH

HIGH-level input voltage

on pins CLK, SYNC, OSC, A0,

A1, SA0, SCL and SDA

0.7VDD

VIL

LOW-level input voltage

on pins CLK, SYNC, OSC, A0,

A1, SA0, SCL and SDA

0.3VDD

output voltage

on pins SCL and SYNC

−0.5

(VDD + 0.5) ≤ 5.5 V

pin SDAACK

−0.5

5.5

IOH

HIGH-level output

current

VOH = 4.6 V; VDD = 5 V; on pin

CLK

1.5

IOL

LOW-level output current VOL = 0.4 V; VDD =5V;

on pins CLK and SYNC

−1.5

on pin SDAACK

−3mA

VPOR

power-on reset voltage

1.0

1.3

1.6

leakage current

VI =VDD or VSS; on pin OSC,

CLK, A0, A1, SA0, SDA,

SDAACK and SCL

−1-

µA

LCD outputs

∆VO

output voltage variation

on pins BP0 to BP3 and S0 to

S159

[3][4

]

−30

+30

output resistance

VLCD = 5 V; on pins BP0 to BP3

1.5

Ω

VLCD = 5 V; on pins S0 to S159

2.0

Ω

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