LC79431KNE Datasheet, PDF (5/7 Pages) Sanyo Semicon Device – Dot-Matrix LCD Drivers

Pin Function
Pin No
Symbol
90
VDD
92
VSS
84
VEE
87
V1
86
V2
85
V5
96
CP
98
DIO1
82
DIO80
91
RS/LS
94
M
89
DISPOFF
1
O1
80
O80
81
83
88
93
NC
95
97
99
100
LC79431KNE
I/O
Supply
VDD-VSS : Logic power supply
VDD-VEE : LCD drive circuit power supply
Function
Supply
I
LCD drive level power supply
V1, VEE : Selected level
V2, V5 : Unselected level
Bidirectional shift register shift clock (falling edge trigger)
I/O
RS/LS
I/O
L (Shift right)
I
H (Shift left)
Data Transfer Direction
O1 → O80
O80 → O1
DIO1
IN
OUT
DIO80
OUT
IN
I
LCD drive output alternation signal
I
O1 to O80 output controlling input pins.
LCD drive outputs
The output levels are determined by the combination of the output the data,
The M signal, and the DISPOFF pin as shown in the table.
M
Data
DISPOFF
Output
L
L
H
V2
O
L
H
H
VEE
H
L
H
V5
H
H
H
V1
*
*
L
V1
* Don’t care (May be set to either “H” or “L”)
-
Must be left open.
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