1998 Jul 30

30

Philips Semiconductors

Product specification

Universal LCD driver for low multiplex

rates

PCF8576C

11 AC CHARACTERISTICS

Notes

2. 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

normal mode

125

200

315

kHz

power-saving mode

21

31

48

kHz

CLK HIGH time

1

−−µs

CLK LOW time

1

−−µs

SYNC propagation delay time

−−

400

ns

SYNC LOW time

1

−−µs

driver delays with test loads

−−

30

µs

bus free time

4.7

−−µs

START condition hold time

4.0

−−µs

set-up time for a repeated START condition

4.7

−−µs

SCL LOW time

4.7

−−µs

SCL HIGH time

4.0

−−µs

SCL and SDA rise time

−−

1

µs

SCL and SDA fall time

−−

0.3

µs

capacitive bus line load

−−

400

pF

data set-up time

250

−−

ns

data hold time

0

−−

ns

set-up time for STOP condition

4.0

−−µs

Fig.20 Test loads.

MBE544

Ω

3.3 k

Ω

1.5 k

0.5VDD

VDD

VDD

SDA,

SCL

CLK

1 nF

BP0 to BP3, and

S0 to S39

(2%)

(2%)

Ω

6.8

VDD

SYNC

(2%)