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LC7940YD Datasheet(数据表) 5 Page - Sanyo Semicon Device

部件型号  LC7940YD
说明  Dot-matrix LCD Drivers
下载  11 Pages
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制造商  SANYO [Sanyo Semicon Device]
网页  http://www.ssdc-jp.com/eng/
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 5 page
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LC7940YD, LC7941YD
No. 6158—5/11
Block Diagram
Pin Functions
4 Level LCD Drive Circuit
(80 bits)
Level Shifter (80 bits)
2nd Latch (80 bits)
1st Latch (80 bits)
Address Decoder
4 bits
Data Bus
Interface
Address Counter
(7 bits)
Chip Disable &
Latch Control
SER/PAR
Control
CLK
80
80
80
20
4
V1
01
02
03
079 080
V3
V4
M
SDI
DI3
DI2
DI1
P/S
CDO
DISP OFF
VSS
VDD
CDI
CP
LOAD
VEE
Pin No.
Synbol
I/O
Functions
LC7940YD
LC7941YD
91
90
VDD
Supply
VDD – VSS is the logic supply.
VDD – VEE is the LCD supply.
86
95
VSS
87
94
VEE
92
89
V1
Supply
LCD panel drive voltage supplies
V1 and VEE are selected levels.
V3 and V4 are not–selected levels.
89
92
V3
88
93
V4
l00
81
CP
I
Display data Input clock (falling–edge trigger).
99
82
CDI
I
Chip disable.
Data is read in when LOW, and not road in when HIGH.
98
83
LOAD
I
Display data latch clock (falling–edge trigger).
On the falling edge, the LCD drive signals set by the display data are output.
97
84
SDI
I
Serial data input.




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