PCF8579 View Datasheet(PDF) - Philips Electronics

Part Name

Description

MFG CO.

PCF8579

LCD column driver for dot matrix graphic displays

Philips Electronics 

Philips Semiconductors

LCD column driver for dot matrix graphic

displays

Product specification

PCF8579

12 DC CHARACTERISTICS

VDD = 2.5 to 6 V; VSS = 0 V; VLCD = VDD − 3.5 V to VDD − 9 V; Tamb = −40 to +85 °C; unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Supplies

VDD

VLCD

IDD

VPOR

supply voltage

LCD supply voltage

supply current

power-on reset level

Logic

VIL

LOW level input voltage

VIH

HIGH level input voltage

ILI1

leakage current at pins SDA, SCL,

SYNC, CLK, TEST, SA0, A0, A1, A2

and A3

IOL

LOW level output current at pin SDA

Ci

input capacitance

LCD outputs

ILI2

leakage current at pins V3 to V4

VDC

DC component of LCD drivers pins

C0 to C39

RCOL

output resistance at pins C0 to C39

fCLK = 2 kHz; note 1

note 2

2.5

−

VDD − 9 −

−

9

−

1.3

6.0

V

VDD − 3.5 V

20

µA

1.8

V

Vi = VDD or VSS

VSS

−

0.7VDD −

−1

−

0.3VDD V

VDD

V

+1

µA

VOL = 0.4 V; VDD = 5 V 3

−

−

mA

note 3

−

−

5

pF

Vi = VDD or VLCD

−2

−

+2

µA

−

±20 −

mV

note 4

−

3

6

kΩ

Notes

1. Outputs are open; inputs at VDD or VSS; I2C-bus inactive; clock with 50% duty factor.

2. Resets all logic when VDD < VPOR.

3. Periodically sampled; not 100% tested.

4. Resistance measured between output terminal (C0 to C39) and bias input (V3, V4, VDD and VLCD) when the specified

current flows through one output under the following conditions (see Table 1):

a) − Vop = VDD − VLCD = 9 V;

b) − V3 − VLCD ≥ 4.70 V; V4 − VLCD ≤ 4.30 V; ILOAD = 100 µA.

1997 Apr 01

24

Share Link: