PCF8578 Philips Semiconductors, PCF8578 Datasheet - Page 28

• Manufacturer Part Number: PCF8578
• Description: LCD row/column driver for dot matrix graphic displays
• Manufacturer: Philips Semiconductors

Philips Semiconductors
13 AC CHARACTERISTICS
All timing values are referenced to V
V
1998 Sep 08
f
f
t
t
I
f
t
t
t
t
t
t
t
t
t
t
t
CLK1
CLK2
PSYNC
PLCD
2
SCL
SW
BUF
SU;STA
HD;STA
LOW
HIGH
r
f
SU;DAT
HD;DAT
SU;STO
DD
SYMBOL
C-bus
LCD row/column driver for dot matrix
graphic displays
= 2.5 to 6 V; V
clock frequency at multiplex rates of
1 : 8, 1 : 16 and 1 : 32
clock frequency at multiplex rates of
1 : 24
SYNC propagation delay
driver delays
SCL clock frequency
tolerable spike width on bus
bus free time
start condition set-up time
start condition hold time
SCL LOW time
SCL HIGH time
SCL and SDA rise time
SCL and SDA fall time
data set-up time
data hold time
stop condition set-up time
SS
= 0 V; V
SYNC, CLK
C39 to C32,
R31/C31 to R8/C8
and R7 to R0
PARAMETER
LCD
= V
IH
DD
3.3 k
and V
3.5 V to V
1 nF
IL
levels with an input voltage swing of V
0.5 V DD
Fig.19 AC test loads.
DD
R
R
V
with test loads
repeated start codes only
9 V; T
DD
28
OSC
OSC
= 330 k ; V
= 330 k ; V
amb
V
CONDITIONS
LCD
SDA
= 40 to +85 C; unless otherwise specified.
= 9 V;
1.5 k
DD
DD
= 6 V
= 6 V
MSA829
V DD
SS
1.2
0.9
4.7
4.7
4.0
4.7
4.0
250
0
4.0
to V
MIN.
DD
.
2.1
1.6
4.0
TYP.
Product specification
PCF8578
3.3
2.5
500
100
100
100
1
0.3
MAX.
kHz
kHz
ns
kHz
ns
ns
ns
UNIT
s
s
s
s
s
s
s
s
s