PCF8578T/1,112 NXP Semiconductors, PCF8578T/1,112 Datasheet - Page 12

• Manufacturer Part Number: PCF8578T/1,112
• Description: IC LCD DRIVER DOT MATRIX 56-VSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8578T/1,112

• Package / Case: 56-VSOP
• Display Type: LCD
• Configuration: Dot Matrix
• Interface: I²C
• Voltage - Supply: 2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Maximum Clock Frequency: 3.3 KHz
• Operating Supply Voltage: 2.5 V to 6 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 150 C
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 65 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-3561-5; 935278868112; PCF8578TD

Philips Semiconductors
2003 Apr 14
LCD row/column driver for
dot matrix graphic displays
V state 1 (t)
V state 2 (t)
ROW 1
R1 (t)
ROW 2
R2 (t)
COL 1
C1 (t)
COL 2
C2 (t)
Fig.7 LCD drive mode waveforms for 1 : 8 multiplex rate.
0.261 V op
0 V
0.261 V op
0.478 V op
0.261 V op
0 V
0.261 V op
0.478 V op
V op
V op
V op
V op
V
V
V
V
on(rms)
off(rms)
state 1
state 2
V
V
V DD
V 2
V
V
V
V
V DD
V 2
V
V
V
V
V DD
V 2
V
V
V
V
V DD
V 2
V
V
V
V
op
op
3
4
5
LCD
3
4
5
LCD
3
4
5
LCD
3
4
5
LCD
(t) = C1(t)
(t) = C2(t)
=
=
1
8
2 (
8
(
8
R1(t):
R2(t):
8
(
8 1
8
1
8
)
1
)
2
1
= 0.297
)
T frame
= 0.430
12
V
V
MSA840
general relationship (n = multiplex rate)
on(rms)
off(rms)
V
V
op
op
=
=
dot matrix
1:8 multiplex rate
1
n
2 (
state 1 (OFF)
state 2 (ON)
n
(
n
n 1
(
n 1
n
n 1
)
1
)
2
)
Product specification
PCF8578