PCF8534AU/DA/1,026 NXP Semiconductors, PCF8534AU/DA/1,026 Datasheet - Page 9

• Manufacturer Part Number: PCF8534AU/DA/1,026
• Description: IC LCD DISPLAY DVR 60SEG
• Manufacturer: NXP Semiconductors

Specifications of PCF8534AU/DA/1,026

• Package / Case: Die
• Display Type: LCD
• Configuration: 60 Segment
• Interface: I²C
• Current - Supply: 8µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 30
• Number Of Segments: 240
• Maximum Clock Frequency: 400 KHz
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935287664026

NXP Semiconductors
PCF8534A_5
Product data sheet
configurations that apply to the preferred modes of operation, together with the biasing
characteristics as functions of V
Table
Table 5.
A practical value for V
threshold voltage (V
the static drive mode a suitable choice is V
Multiplex drive modes of 1:3 and 1:4 with
hence the contrast ratios are smaller.
Bias is calculated by
The RMS on-state voltage (V
where the values for n are
The RMS off-state voltage (V
Discrimination is the ratio of V
V
V
D
LCD drive
mode
static
1:2 multiplex 2
1:2 multiplex 2
1:3 multiplex 3
1:4 multiplex 4
on RMS
off RMS
a = 1 for
a = 2 for
n = 1 for static mode
n = 2 for 1:2 multiplex
n = 3 for 1:3 multiplex
n = 4 for 1:4 multiplex
=
----------------------- -
V
V
5.
off RMS
on RMS
=
=
Discrimination ratios
1
1
2
3
V
V
Number of:
Backplanes Levels
1
bias
bias
LCD
LCD
=
1
-- -
n
----------------------------- -
n
a
+
2
th
------------------------------------------- -
a
a 1
–
------------ -
1
---------------- -
), typically when the LCD exhibits approximately 10 % contrast. In
LCD
n 1
1
+
–
Rev. 05 — 6 August 2009
2a
1
+
–
n
+
1
a
is determined by equating V
+
a
, where the values for a are
2
2
2
3
4
4
4
n
+
+
2
on(RMS)
off(RMS)
on(RMS)
n 1
n 1
------------ -
1
LCD
–
–
+
1
LCD bias
configuration
static
1
1
1
1
a
and the resulting discrimination ratios (D), are given in
) for the LCD is calculated with
) for the LCD is calculated with
2
3
3
3
to V
2
off(RMS)
1
Universal LCD driver for low multiplex rates
LCD
2
bias are possible but the discrimination and
> 3
and is determined from
V
--------------------------
0
0.354
0.333
0.333
0.333
V
off RMS
V
off(RMS)
th
LCD
.
with a defined LCD
1
0.791
0.745
0.638
0.577
V
------------------------ - D
on RMS
V
LCD
PCF8534A
Equation
Equation
© NXP B.V. 2009. All rights reserved.
Equation
2.236
2.236
1.915
1.732
=
1:
2:
--------------------------
V
V
off RMS
on RMS
3:
9 of 47
(1)
(2)
(3)