PCF8576CUSLASH2 datasheet(29/44 Pages) PHILIPS

29 / 44 page

1998 Jul 30

Philips Semiconductors

Product speciﬁcation

Universal LCD driver for low multiplex

rates

PCF8576C

10 DC CHARACTERISTICS

VDD = 2 to 6 V; VSS =0V; VLCD =VDD − 2VtoVDD − 6V;Tamb = −40 to +85 °C; unless otherwise speciﬁed.

Notes

1. VLCD ≤ VDD − 3 V for 1⁄3bias.

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.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supplies

VDD

supply voltage

−

VLCD

LCD supply voltage

note 1

VDD − 6

−

VDD − 2V

IDD

supply current

note 2

normal mode

fclk = 200 kHz

−−

120

µA

power-saving mode

fclk = 35 kHz;

VDD = 3.5 V; VLCD =0V;

A0, A1 and A2 tied to VSS

−−

µA

Logic

VIL

LOW-level input voltage SDA, SCL,

CLK, SYNC, SA0, OSC, A0 to A2

VSS

−

0.3VDD

VIH1

HIGH-level input voltage CLK, SYNC,

SA0, OSC, A0 to A2

0.7VDD

−

VDD

VIH2

HIGH-level input voltage SDA, SCL

0.7VDD

−

6.0

VOL

LOW-level output voltage

IOL =0mA

−−

0.05

VOH

HIGH-level output voltage

IOH = 0 mA

VDD − 0.05 −−

IOL1

LOW-level output current CLK, SYNC VOL =1V; VDD =5V

−−

IOH1

HIGH-level output current CLK

VOH =4V; VDD =5V

−1

−−

IOL2

LOW-level output current SDA, SCL

VOL = 0.4 V; VDD =5V

−−

IL1

leakage current SA0, A0 to A2, CLK,

SDA and SCL

VI =VDD or VSS

−1

−

µA

IL2

leakage current OSC

VI =VDD

−1

−

µA

Ipd

A0, A1, A2 and OSC pull-down

current

VI =1V; VDD = 5 V

150

µA

RSYNC

pull-up resistor (SYNC)

150

Ω

VPOR

power-on reset voltage level

note 3

−

1.0

1.6

tSW

tolerable spike width on bus

−−

100

input capacitance

note 4

−−

7pF

LCD outputs

VBP

DC voltage component BP0 to BP3

CBP =35nF

−20

−

+20

DC voltage component S0 to S39

CS =5nF

−20

−

+20

RBP

output resistance BP0 to BP3

note 5; VLCD =VDD − 5V −−

Ω

output resistance S0 to S39

note 5; VLCD =VDD − 5V −−

7.5

Ω

PCF8576CU/2 Datasheet(PDF) 29 Page - NXP Semiconductors

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