lc7940kd Sanyo Semiconductor Corporation, lc7940kd Datasheet - Page 6

• Manufacturer Part Number: lc7940kd
• Description: Stn Dot Matrix Lcd Segment Driver
• Manufacturer: Sanyo Semiconductor Corporation

Specifications
Absolute Maximum Ratings at Ta=25±2°C, V SS = 0V
Note *1 The following relations between elements should be maintained:
Allowable Operating Ranges at Ta = -20 to 85°C, V SS = 0V
Note *2 The following relations between elements should be maintained:
Maximum supply voltage (logic)
Maximum supply voltage (LCD)
Maximum input voltage
Operating temperature range
Storage temperature range
Supply voltage (logic)
Supply voltage (LCD)
Input high level voltage
Input low level voltage
CP Shift clock frequency
CP pulse width
LOAD pulse width
DIn and SDI to CP setup time
DIn and SDI to CP hold time
CP to LOAD time
LOAD to CP time
CP rise time
CP fall time
LOAD rise time
LOAD fall time
*3 When the power is turned on, either the logic system power must be turned on before the LCD drive system
V DD ≥V1>V3>V4>V EE , V DD -V3≤7V, V4-V EE ≤7V
V DD ≥V1>V3>V4>V EE , V DD -V3≤7V, V4-V EE ≤7V
power or else they must both be turned on at the same time. When the power is turned off, either the LCD drive
system power must be turned off before the logic system power, or else both must be turned off at the same
time.
Parameter
Parameter
V DD -V EE max
V DD -V EE
t SETUP
Symbol
V DD max
t HOLD
Symbol
V DD
t CL1
t CL2
V I max
t WC
V IH
f CP
t WL
V IL
t LC
t RL
t FL
t R
t F
Topr
Tstg
LC7940KD / LC7941KDR
*2, 3
CP, CDI, DI1 to DI3, M, SDI, P/S,
DISPOFF , and LOAD
CP, CDI, DI1 to DI3, M, SDI, P/S,
DISPOFF , and LOAD
CP
CP
LOAD
DIn and SDI to CP
DIn and SDI to CP
CP to LOAD
CP to LOAD
LOAD to CP
CP
CP
LOAD
LOAD
*1
Conditions
Conditions
-
-
-
-
-
0.8V DD
min
-
-
-
-
-
-
100
100
100
100
2.7
80
80
8
0
Ratings
Ratings
-0.3 to V DD +0.3
typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-0.3 to +7.0
-40 to +125
-20 to +85
0 to 22
0.2V DD
max
-
-
-
-
-
-
-
-
5.5
3.3
No.A0573-6/13
20
50
50
50
50
Unit
MHz
Unit
°C
°C
V
V
V
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
V