BU9728AKV_08 Datasheet, PDF (11/24 Pages) Rohm – For 128-140 Segment type LCD LCD Segment Driver

● Electrical Characteristics(BU9795AKV/AFV/AGUW)
DC Characteristics (VDD=2.5～5.5V, VSS=0V, Ta=-40～85degree, unless otherwise specified)
Parameter
Symb
ol MIN
Limit
TYP
MAX ^Unit
Condition
“H” level input voltage
VIH 0.7VDD
-
VDD
V
“L” level input voltage
VIL
VSS
-
0.3VDD V
“H” level input current
IIH
-
-
1
uA
“L” level input current
IIL
-1
-
-
uA
LCD Driver on SEG RON
-
3.5
-
kΩ Iload=±10uA
resistance
COM RON
-
3.5
-
kΩ
VLCD supply voltage
VLCD
0
-
VDD -2.4 V VDD-VLCD≧2.5V
Standby current
Ist
-
-
5
uA Display off, Oscillator off
Power consumption 1
IDD1
-
VDD=3.3[V], Ta=25,
12.5
30
uA Power save mode1, FR=70Hz
1/3 bias, Frame inverse
Power consumption 2
IDD2
-
VDD=3.3[V], Ta=25,
20
40
uA Normal mode, FR=80Hz
1/3 bias, Line inverse
● Oscillation Characteristics (BU9795AKV/AFV/AGUW)
(VDD=2.5～5.5V,VSS=0V, Ta=-40～85degree)
Parameter
Symb
ol MIN
Limit
TYP
Frame frequency
Frame frequency1
fCLK
56
80
fCLK1
70
80
MAX
104
90
● MPU interface Characteristics (BU9795AKV/AFV/AGUW)
(VDD=2.5V～5.5V,VSS=0V, Ta=-40～85degree)
Parameter
Symb
ol
MIN
Limit
TYP
Input rise time
tr
-
-
Input fall time
tf
-
-
SCL cycle time
tSCY 400
-
“H” SCL pulse width
tSHW 100
-
“L” SCL pulse width
tSLW 100
-
SD setup time
tSDS 20
-
SD hold time
tSDH 50
-
CSB setup time
tCSS 50
-
CSB hold time
tCSH 50
-
“H” CSB pulse width
tCHW 50
-
MAX
80
80
-
-
-
-
-
-
-
-
Unit
Condition
Hz FR = 80Hz setting
Hz VDD=3.5V, 25degree
Unit
Condition
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CSB
SCL
SD
tCSS
tf
tSLW
tr
tSCYC
tSHW
tSDS tSDH
tCSH
tCHW
Fig.BU9795AKV/FV/GUW-1 3wire Serial timing waveform
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