參數(shù)資料
型號(hào)： PCF8533
廠商： NXP Semiconductors N.V.
英文描述： Universal LCD driver for low multiplex rates
中文描述： 通用LCD驅(qū)動(dòng)器的低復(fù)用率
文件頁(yè)數(shù)： 16/36頁(yè)
文件大小： 158K
代理商： PCF8533
1999 Jul 30
16
Philips Semiconductors
Product specification
Universal LCD driver for low multiplex rates
PCF8533
the BANK SELECT command. The input bank selector
functions independently to the output bank selector.
6.15
Blinker
The display blinking capabilities of the PCF8533 are very
versatile. The whole display can be blinked at frequencies
selectedbytheBLINKcommand.Theblinkingfrequencies
are integer multiples of the clock frequency. The ratios
between the clock and blinking frequencies depend on the
mode in which the device is operating, see Table 4.
An additional feature is for an arbitrary selection of LCD
segments to be blinked. This applies to the static and
1 : 2 LCD drive modes and can be implemented without
any communication overheads. By means of the output
bank selector, the displayed RAM banks are exchanged
with alternate RAM banks at the blinking frequency. This
mode can also be specified by the BLINK command.
In the 1 : 3 and 1 : 4 multiplex modes, where no alternate
RAM bank is available, groups of LCD segments can be
blinked by selectively changing the display RAM data at
fixed time intervals.
If the entire display is to be blinked at a frequency other than the nominal blinking frequency, this can be effectively
performed by resetting and setting the display enable bit E at the required rate using the MODE SET command.
Table 4
Blinking frequencies
BLINKING MODE
NORMAL OPERATING MODE
RATIO
NOMINAL BLINKING FREQUENCY
Off
2 Hz
blinking off
2 Hz
1 Hz
1 Hz
0.5 Hz
0.5 Hz
f
768
----------
f
1536
f
3072
------------
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參數(shù)描述
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