PCF8579 Philips Semiconductors, PCF8579 Datasheet - Page 24

• Manufacturer Part Number: PCF8579
• Description: LCD column driver for dot matrix graphic displays
• Manufacturer: Philips Semiconductors

Philips Semiconductors
12 DC CHARACTERISTICS
V
Notes
1. Outputs are open; inputs at V
2. Resets all logic when V
3. Periodically sampled; not 100% tested.
4. Resistance measured between output terminal (C0 to C39) and bias input (V
1997 Apr 01
Supplies
V
V
I
V
Logic
V
V
I
I
C
LCD outputs
I
V
R
SYMBOL
DD
LI1
OL
LI2
DD
DD
LCD
POR
IL
IH
DC
i
COL
LCD column driver for dot matrix graphic
displays
current flows through one output under the following conditions (see Table 1):
a)
b)
= 2.5 to 6 V; V
V
V
op
3
supply voltage
LCD supply voltage
supply current
power-on reset level
LOW level input voltage
HIGH level input voltage
leakage current at pins SDA, SCL,
SYNC, CLK, TEST, SA0, A0, A1, A2
and A3
LOW level output current at pin SDA
input capacitance
leakage current at pins V
DC component of LCD drivers pins
C0 to C39
output resistance at pins C0 to C39
= V
V
LCD
DD
SS
4.70 V; V
V
= 0 V; V
LCD
PARAMETER
= 9 V;
DD
LCD
< V
4
DD
= V
POR
V
LCD
or V
DD
.
3
to V
SS
4.30 V; I
3.5 V to V
; I
4
2
C-bus inactive; clock with 50% duty factor.
LOAD
DD
f
note 2
V
V
note 3
V
note 4
= 100 A.
CLK
i
OL
i
9 V; T
= V
= V
24
CONDITIONS
= 0.4 V; V
= 2 kHz; note 1
DD
DD
amb
or V
or V
= 40 to +85 C; unless otherwise specified.
SS
LCD
DD
= 5 V 3
3
2.5
V
V
0.7V
, V
1
2
DD
SS
MIN.
4
, V
DD
9
DD
and V
9
1.3
3
TYP.
20
LCD
Product specification
) when the specified
6.0
V
20
1.8
0.3V
V
+1
5
+2
6
DD
DD
MAX.
PCF8579
DD
3.5 V
V
V
V
V
mA
pF
mV
k
UNIT
A
A
A