參數(shù)資料
型號(hào): STV7710
廠商: 意法半導(dǎo)體
英文描述: Vacuum Fluorescent Display (VFD) Driver
中文描述: 真空熒光顯示器(VFD)驅(qū)動(dòng)程序
文件頁(yè)數(shù): 10/19頁(yè)
文件大?。?/td> 121K
代理商: STV7710
CIRCUIT DESCRIPTION
STV7710/WAF
10/19
4.3
Description
STV7710/WAF includes all the logic and power circuits necessary to drive electrodes of a vacuum
fluorescent display (VFD). Binary values of each pixel of the displayed line are loaded into the shift
register DATA_A/B data bus. Data is shifted at each low to high transition of the
CLK
clock. After 96
shifts, the data is available at the output of the shift register. This output can be used to cascade
several Ics to drive higher resolution displays.
The forward /reverse (
F/R
) input is used to select the direction of the shift register. Data input/output
status is set according to the selected direction (refer to
Table 6
).
The maximum frequency of the shift clock is 40MHz.
When the
STB
signal is high, data are transferred from the shift register to the latch and power
output stages.
All the output data are kept memorized and held in the latch stage when the latch input
STB
is set
at low level.
Vsssub and Vsslog must be connected as close as possible to the logical reference ground of the
application. Also, make sure that TEST input pin is connected to ground (
Figure 8
).
STV7710/WAF is supplied with a 5 volt power supply. All the logic inputs can be driven either by 5V
CMOS logic, or by 3.3V CMOS logic.
Table 7: Shift register truth table
Input
Data-in / Data-out
Shift register function
F/R
CLK
DATA_A
DATA_B
H
Data-in
Data-out
Forward shift
H
H or L
-
-
Steady
L
Data-out
Data-in
Reverse shift
L
H or L
-
-
Steady
Table 8: Power output truth table
TEST
Qn
STB
BLK
POC
Driver Output
Comments
L
X
X
H
X
all “Low”
Output at low level
L
X
X
L
L
all “High”
Output at high level
L
X
L
L
H
Qn
Data latched
L
L
H
L
H
L
Data transfered
L
H
H
L
H
H
Data transfered
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STV7710/WAF 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Vacuum Fluorescent Display (VFD) Driver
STV7710_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Vaccum fluorescent display (VFD) driver
STV7710BMP 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Vaccum fluorescent display (VFD) driver
STV7710WAF 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Vaccum fluorescent display (VFD) driver
STV7710WP 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Vaccum fluorescent display (VFD) driver