參數(shù)資料
型號(hào)： PCF8566
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
文件頁數(shù)： 16/40頁
文件大?。?/td> 243K
代理商： PCF8566
1998 May 04
16
Philips Semiconductors
Product specification
Universal LCD driver for low multiplex
rates
PCF8566
6.16
Output bank selector
This selects one of the four bits per display RAM address
for transfer to the display latch. The actual bit chosen
depends on the particular LCD drive mode in operation
and on the instant in the multiplex sequence. In 1 : 4
multiplex, all RAM addresses of bit 0 are the first to be
selected, these are followed by the contents of bit 1, bit 2
and then bit 3. Similarly in 1 : 3 multiplex, bits 0, 1 and 2
are selected sequentially. In 1 : 2 multiplex, bits 0 then 1
are selected and, in the static mode, bit 0 is selected.
The PCF8566 includes a RAM bank switching feature in
the static and 1 : 2 multiplex drive modes. In the static
drive mode, the BANK SELECT command may request
the contents of bit 2 to be selected for display instead of
bit 0 contents. In the 1 : 2 drive mode, the contents of
bits 2 and 3 may be selected instead of bits 0 and 1.
This gives the provision for preparing display information
in an alternative bank and to be able to switch to it once it
is assembled.
6.17
Input bank selector
The input bank selector loads display data into the display
RAM according to the selected LCD drive configuration.
Display data can be loaded in bit 2 in static drive mode or
in bits 2 and 3 in 1 : 2 drive mode by using the BANK
SELECT command. The input bank selector functions
independently of the output bank selector.
6.18
Blinker
The display blinking capabilities of the PCF8566 are very
versatile. The whole display can be blinked at frequencies
selected by the BLINK command. The blinking frequencies
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, as shown in
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
f
CLK
/92160
f
CLK
/184320
f
CLK
/368640
POWER-SAVING
MODE RATIO
f
CLK
/15360
f
CLK
/30720
f
CLK
/61440
NOMINAL BLINKING FREQUENCY
f
blink
(Hz)
blinking off
2
1
0.5
Off
2 Hz
1 Hz
0.5 Hz
相關(guān)PDF資料
PDF描述
PCF8573 Clock/calendar with Power Fail Detector
PCF8573P Clock/calendar with Power Fail Detector
PCF8573T Clock/calendar with Power Fail Detector
PCF8574 Remote 8-bit I/O expander for I2C-bus
PCF8578 LCD row/column driver for dot matrix graphic displays
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8566P 制造商:NXP Semiconductors 功能描述:LCD DRIVER LOW-MUX 40DIP 制造商:NXP Semiconductors 功能描述:LCD DRIVER, LOW-MUX, 40DIP
PCF8566P,112 功能描述:LCD 驅(qū)動(dòng)器 LCD DVR UNVRSL LOW-MUX RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
PCF8566P-1 制造商:PHILIPS-SEMI 功能描述:
PCF8566PN 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
PCF8566T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal LCD driver for low multiplex rates
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*