pcf85176 NXP Semiconductors, pcf85176 Datasheet - Page 19

• Manufacturer Part Number: pcf85176
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF85176_1
Product data sheet
7.16.1 Bit transfer
7.16.2 START and STOP conditions
7.16 Characteristics of the I
Table 6.
[1]
The entire display can blink at a frequency other than the nominal blink frequency. This
can be effectively performed by resetting and setting the display enable bit E at the
required rate using the mode-set command (see
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
Both data and clock lines remain HIGH when the bus is not busy.
A HIGH-to-LOW transition of the data line while the clock is HIGH is defined as the START
condition - S.
A LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition - P (see
Blink mode
off
1
2
3
Fig 12. Bit transfer
The blink frequency is proportional to the clock frequency (f
Table
2
C-bus is for bidirectional, two-line communication between different ICs or modules.
17.
Blink frequencies
All information provided in this document is subject to legal disclaimers.
SDA
SCL
Figure
Rev. 01 — 14 April 2010
13).
[1]
2
C-bus
Blink frequency equation
-
f
f
f
blink
blink
blink
data valid
data line
stable;
=
=
=
--------- -
768
------------ -
1536
------------ -
3072
f
clk
f
f
clk
clk
Figure
Universal LCD driver for low multiplex rates
allowed
change
of data
Table
12).
clk
). For the range of the clock frequency see
10).
mba607
PCF85176
© NXP B.V. 2010. All rights reserved.
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