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LC79401KNE Datasheet(PDF) 6 Page - ON Semiconductor

Part # LC79401KNE
Description  Dot-Matrix LCD Drivers
Download  8 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LC79401KNE Datasheet(HTML) 6 Page - ON Semiconductor

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LC79401KNE
No. A1419-6/8
Pin Function
Pin No
Symbol
I/O
Function
90
VDD
88
VSS
85
VEE
Supply
VDD-VSS : Logic power supply
VDD-VEE : LCD drive circuit power supply
82
V1
83
V3
84
V4
Supply
LCD drive level power supply
V1,VEE : Selected level
V3,V4 : Unselected level
99
CP
I
Display data acquisition clock (falling edge trigger)
87
LOAD
I
Display data latch clock (falling edge trigger)
The display data LCD drive signal is output on the falling edge.
95
96
97
98
DI4
DI3
DI2
DI1
I
Display data
LCD drive output
LCD display
H
Selected level
On
L
Unselected level
Off
91
R/L
I
Control pin that inverts the data output destination
Number of clock
R/L
Data input
1
2
3
• • •
18
19
20
DI1
O77
O73
O69
• • •
O9
O5
O1
DI2
O78
O74
O70
• • •
O10
O6
O2
DI3
O79
O75
O71
• • •
O11
O7
O3
L
DI4
O80
O76
O72
• • •
O12
O8
O4
DI1
O4
O8
O12
• • •
O72
O76
O80
DI2
O3
O7
O11
• • •
O71
O75
O79
DI3
O2
O6
O10
• • •
O70
O74
O78
H
DI4
O1
O5
O9
• • •
O69
O73
O77
86
M
I
LCD drive output alternation signal
81
CDI
I
Chip disable pin
High level : Data is not acquired.
Low level : Data is acquired
100
CDO
O
Connect to the CDI pin on the next chip when cascade connection is used.
89
DISPOFF
I
Input that controls the O1 to O80 output pins. During periods when this pin
Is low, the O1 to O80 output pins output the V1 level. See the truth table.
1 to 80
O1 to O80
O
LCD drive outputs
The output level are determined by the combination of the output the data,
The M signal, and The DISPOFF pin as shown in the table.
M
Q
DISPOFF
Output
L
L
H
V3
L
H
H
V1
H
L
H
V4
H
H
H
VEE
*
*
L
V1
Note : don’t care (fixed at high or low)
92
NC
93
NC
94
NC
-
Must be left open.


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