2004 Dec 22

29

Philips Semiconductors

Product specification

Universal LCD driver for low

multiplex rates

PCF8576D

11 AC CHARACTERISTICS

Notes

1. Typical output duty factor: 50% measured at the CLK output pin.

2. Not tested in production.

3. All timing values are valid within the operating supply voltage and ambient temperature range and are referenced to

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

oscillator frequency

note 1

960

1890

2640

Hz

input CLK HIGH time

60

−−µs

input CLK LOW time

60

−−µs

SYNC propagation delay

−

30

−

ns

SYNC LOW time

1

−−µs

driver delays with test loads

−−

30

µs

SCL clock frequency

−−

400

kHz

bus free time between a STOP and START

1.3

−−µs

START condition hold time

0.6

−−µs

set-up time for a repeated START condition

0.6

−−µs

SCL LOW time

1.3

−−µs

SCL HIGH time

0.6

−−µs

SCL and SDA rise time

−−

0.3

µs

−−

1.0

µs

SCL and SDA fall time

−−

0.3

µs

capacitive bus line load

−−

400

pF

data set-up time

100

−−

ns

data hold time

0

−−

ns

set-up time for STOP condition

0.6

−−µs

tolerable spike width on bus

−−

50

ns

handbook, full pagewidth

MCE439

Ω

3.3 k

Ω

1.5 k

0.5VDD

VDD

VSS

SDA,

SCL

CLK

1 nF

BP0 to BP3, and

S0 to S39

(2%)

(2%)

Ω

6.8

VDD

SYNC

(2%)

Fig.21 Test loads.