PCF8578T/1 NXP Semiconductors, PCF8578T/1 Datasheet - Page 34

• Manufacturer Part Number: PCF8578T/1
• Description: IC, LCD DRIVER, ROW/COLUMN, 56VSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8578T/1

• Supply Current: 20µA
• No. Of Digits / Alpha: 36
• Meter Display Type: LCD
• Supply Voltage Range: 2.5V To 6V
• Driver Case Style: VSOP
• No. Of Pins: 56
• Operating Temperature Range: -40°C To +85°C
• Base: RoHS Compliant
• No. Of Segments: 384
• Interface Type: I2C
• Rohs Compliant: Yes

Fig 25. Typical LCD driver system with 1:32 multiplex rate
SCL
SDA
V
DD
C
C
C
C
C
V
V
R
R
(4 2 3)R
R
R
LCD
DD
V
SS
V
V
V
V
V
V
V
SDA
DD
2
3
4
5
LCD
SS
(ROW MODE)
SCL
PCF8578
CLK SYNC
OSC
SA0
unused columns
V
SS
R ext(OSC)
V
SS
8
rows
32
V
DD
V SS
V
V
V
V
V
SS
DD
LCD
3
4
SYNC
PCF8579
CLK
#1
SCL SDA SA0
40
columns
V SS
A0
A1
A2
A3
subaddress 0
LCD DISPLAY
V
DD
V
V
V
V
V
V
SS
DD
LCD
3
4
SS
SYNC
PCF8579
CLK
#2
SCL SDA SA0
40
columns
V
A0
A1
A2
A3
SS
1:32 multiplex rate
32
(20480 dots max.)
subaddress 1
40
k dots (k
V
DD
V
16)
V
V
V
V
V
SS
SS
DD
LCD
3
4
SYNC
PCF8579
CLK
#k
SCL SDA SA0
40
columns
msa845
V
A0
A1
A2
A3
subaddress k 1
SS