PCF8562 datasheet(27/36 Pages) PHILIPS

27 / 36 page

November 22, 2004

Philips Semiconductors

Preliminary specification

Universal LCD driver

for low multiplex rates

PCF8562

10 DC CHARACTERISTICS

VDD = 1.8 to 5.5 V; VSS = 0 V; VLCD = 2.5 to 6.5 V; Tamb =

−40 to +85 °C; unless otherwise specified.

Notes

VLCD > 3 V for 1

⁄3bias.

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

When tested, I2C pins SCL and SDA have no diode to VDD and may be driven according to the Vi2 limiting values

given in Chapter 8. Also see Fig.21.

Periodically sampled, not 100% tested.

Outputs measured one at a time.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supplies

VDD

supply voltage

1.8

−

5.5

VLCD

LCD supply voltage

note 1

2.5

−

6.5

IDD

supply current

note 2; fCLK = 1536 Hz

−

µA

ILCD

LCD supply current

note 2; fCLK = 1536 Hz

−

µA

Logic

VIL

LOW-level input voltage

CLK, SYNC, OSC, A0 to A2 and SA0

VSS

−

0.3VDD

VIH

HIGH-level input voltage

CLK, SYNC, OSC, A0 to A2 and SA0

0.7VDD

−

VDD

VIL2

LOW-level input voltage SCL, SDA

VSS

−

0.3VDD

VIH2

HIGH-level input voltage SCL, SDA

note 3

0.7VDD

−

VDD

IOL1

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

−

IOH1

HIGH-level output current CLK

VOH = 4.6 V; VDD = 5 V

−1

−

IOL2

LOW-level output current SDA

VOL = 0.4 V; VDD = 5 V

−

IL1

leakage current

CLK, SCL, SDA, A0 to A2 and SA0

VI = VDD or VSS

−1

−

µA

IL2

leakage current OSC

VI = VDD

−1

−

µA

VPOR

power-on reset voltage level

1.0

1.3

1.6

input capacitance

note 4

−

LCD outputs

VBP

DC voltage tolerance BP0 to BP3

−100

−

+100

DC voltage tolerance S0 to S31

−100

−

+100

RBP

output resistance BP0 to BP3

note 5; VLCD = 5 V

−

1.5

Ω

output resistance S0 to S31

note 5; VLCD = 5 V

−

6.0

Ω

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