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LC7940YC Datasheet

  • LC7940YC

  • Dot-matrix LCD Drivers

  • 13頁(yè)

  • SANYO

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Ordering number: EN 6157
CMOS IC
LC7940YC,7941YC
Dot-matrix LCD Drivers
Overview
The LC7940YC and LC7941YC are segment driver ICs
for driving large, dot
鈥?/div>
matrix LCD displays. They read 4
鈥?/div>
bit parallel or serial input, display data from a controller
into an 80
鈥?/div>
bit latch, and then generate LCD drive signals
corresponding to that data.
The LC7940YC and LC7941YC feature mirror
鈥?/div>
image pin
assignments, allowing them to be used together to increase
component density. They are designed to be used with the
LC7942YC common driver to drive large LCD panels.
Features
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
80 built
鈥?/div>
in LCD display drive circuits
1/8 to l/128 display duty cycle
Serial or 4
鈥?/div>
bit parallel data input
Chip disable for low power dissipation for large
鈥?/div>
sized
panels
鈥?Bias supply voltags can be supplied externally
鈥?Operating supply voltage and ambient temperature
- 2.7 to 5.5 V logic supply ( V
DD
) at Ta =
鈥?/div>
20 to +85擄C
- 8 to 20V LCD supply (V
DD
鈥?/div>
V
EE
) at Ta =
鈥?/div>
20 to
+85 擄C
鈥?CMOS process
Speci鏗乧ations
The following electrical characteristics apply when sealed in a Sanyo standard QIC-100 package.
Absolute Maximum Ratings
at Ta = 25 鹵 2擄C, V
SS
= 0 V
Parameter
Logic supply voltge
LCD supply voltage, See Note below.
Input voltage
Symbol
V
DD
max
V
DD
鈥?V
EE
max
V
I
max
Ratings
鈥?.3 to +7.0
0 to 22
鈥?.3 to V
DD
+ 03
Unit
V
V
擄C
s
Any and all SANYO products described or contained herein do not have speci鏗乧ations that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft鈥檚
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products speci鏗乧ations of any and all SANYO products described or contained
herein.
s
SANYO Electric Co., Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
63099RM (ID) No. 6157鈥?/13

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