LC7940YD, LC7941YD
No. 6158—2/11
Note
V
DD
≥
V
1
> V
3
> V
4
> V
EE
Recommended Operating Condltions
at Ta =
–
20 to + 85°C, V
SS
= 0V
Notes
1. V
DD
≥
V
l
> V
3
> V
4
> V
EE
2. At turn ON, the LCD supply should be energized after or simultaneously with the logic supply. At turn OFF, the logic supply
should be cut after or simultaneously with the LCD supply.
Electrlcai Characterfstlcs
at Ta = 25 ± 2°C,V
SS
= 0V, V
DD
= 2.7 to 5.5 V
Operating temperature range
T
opr
T
stg
–20 to +85
°C
Storage temperature range
–40 to +125
°C
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Logic supply voltage
V
DD
2.7
–
5.5
V
LCD supply voltage
V
DD
– V
EE
See Notes 1 and 2.
8
–
20
V
HIGH–level input voltage
V
IH
CP, CDl, DI1 to DI3, M,
SDl, P/S, DISPOFF and
LOAD
0.8V
DD
–
–
V
LOW–level inpvt voltage
V
IL
CP, CDI, Dl1 to DI3, M,
SDl, P/S,DISPOFF and
LOAD
–
–
0.2V
DD
V
CP shift clock frequency
f
CP
–
3.3
MHz
CP pulsewidth
t
WC
100
–
–
ns
LOAD pulsewidth
t
WL
100
–
–
ns
DIn and SDI to CP setup time
t
SETUP
80
–
–
ns
DIn and SDI to CP hold time
t
HOLD
80
–
–
ns
CP to LOAD time
t
CL1
0
–
–
ns
t
CL2
100
–
–
ns
LOAD to CP time
t
LC
100
–
–
ns
CP rise time
t
R
–
–
50
ns
CP fall time
t
F
–
–
50
ns
LOAD rise time
t
RL
–
–
50
ns
LOAD fall time
t
FL
–
–
50
ns
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
HIGH–level input current
I
IH
V
IN
=V
DD
; LOAD, CP, CDI,
P/S, DI1 to DI3, SDl, M,
and DISPOFF
–
1
μA
LOW–level input current
I
IL
V
IN
= V
SS
; LOAD, CP, CDl,
P/S, DI1 to DI3, SDI, M,
and DISPOFF
–
–
–1
μA
CDO HIGH–level output voltage
V
OH
I
OH
= –400 μA
V
DD
– 0.4
–
–
V
CDO LOW–levef output voltage
V
OL
I
OL
= 400 μA
–
–
0.4
V
O1 to O80 driver ON resistance
R
ON
V
DD
– V
EE
= 18 V,
|V
DE
– V
O
|= 0.25 V.
See note
–
2
4
k
Parameter
Symbol
Ratings
Unit