PCF8576DT/2,118 NXP Semiconductors, PCF8576DT/2,118 Datasheet - Page 21

• Manufacturer Part Number: PCF8576DT/2,118
• Description: IC LCD DRIVER 40/160SEG 56TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8576DT/2,118

• Package / Case: 56-TSSOP
• Display Type: LCD
• Configuration: 40 Segment
• Interface: I²C
• Current - Supply: 24µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 20
• Number Of Segments: 160
• 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
• For Use With: 568-4703 - DEMO BOARD LCD GRAPHIC DRIVER
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-3558-2; 935276166118; PCF8576DT/2-T

NXP Semiconductors
PCF8576D
Product data sheet
7.16.1 Bit transfer
7.16 Characteristics of the I
In the 1:3 and 1:4 drive modes, where no alternative RAM bank is available, groups of
LCD segments can blink selectively by changing the display RAM data at fixed time
intervals.
The entire display can blink at a frequency other than the nominal blink frequency by
sequentially resetting and setting the display enable bit E at the required rate using the
mode-set command (see
Table 6.
[1]
The I
The two lines are a Serial DAta line (SDA) and a Serial CLock line (SCL). Both lines must
be connected to a positive supply via a pull-up resistor when connected to the output
stages of a device. Data transfer may be initiated only when the bus is not busy.
One data bit is transferred during each clock pulse. The data on the SDA line must remain
stable during the HIGH period of the clock pulse as changes in the data line at this time
will be interpreted as a control signal (see
Blink mode
off
1
2
3
Fig 13. Bit transfer
Blink modes 1, 2 and 3 and the nominal blink frequencies 0.5 Hz, 1 Hz and 2 Hz correspond to an oscillator
frequency (f
2
C-bus is for bidirectional, two-line communication between different ICs or modules.
Blinking frequencies
clk
) of 1536 Hz (see
All information provided in this document is subject to legal disclaimers.
SDA
SCL
Rev. 10 — 14 February 2011
Section
Normal operating mode ratio
-
--------- -
768
------------ -
1536
------------ -
3072
f
f
f
clk
clk
clk
2
Section
C-bus
[1]
7.17).
data valid
data line
stable;
11).
Figure
Universal LCD driver for low multiplex rates
allowed
change
of data
13).
Nominal blink frequency
blinking off
2 Hz
1 Hz
0.5 Hz
mba607
PCF8576D
© NXP B.V. 2011. All rights reserved.
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