PCF8578 Philips Semiconductors, PCF8578 Datasheet - Page 32

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

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V DD
SCL
SDA
C
C
C
C
C
V LCD
V DD
R
R
(4 2 3)R
R
R
V SS
SDA
V DD
V 2
V 3
V 4
V 5
V LCD
V SS
(ROW MODE)
SCL
PCF8578
CLK SYNC
OSC
SA0
unused columns
V SS
R
V SS
OSC
8
rows
32
Fig.24 Typical LCD driver system with 1 : 32 multiplex rate.
V DD
V SS
V DD
V LCD
V 3
V 4
V SS
SYNC
CLK
PCF8579
1
SCL SDA SA0
40
columns
V SS
A0
A1
A2
A3
LCD DISPLAY
subaddress 0
V DD
V SS
V DD
V LCD
V 3
V 4
V SS
SYNC
CLK
PCF8579
2
SCL SDA SA0
40
columns
V SS
A0
A1
A2
A3
1:32 multiplex rate
32 x 40 x k dots (k
(20480 dots max.)
subaddress 1
V DD
16)
V SS
V SS
V DD
V LCD
V 3
V 4
SYNC
CLK
PCF8579
k
SCL SDA SA0
40
columns
MSA845
V SS
A0
A1
A2
A3
subaddress k 1