BU9795AKV Datasheet, PDF (3/16 Pages) Rohm – Standard function Segment Drivers

BU9795AKV, BU9795AFV, BU9795AGUW
Technical Note
●Electrical characteristics
DC Characteristics (VDD=2.5～5.5V, VSS=0V, Ta=-40～85degree, unless otherwise specified)
Parameter
Symbol
MIN
Limit
TYP
Unit
MAX
Condition
“H” level input voltage
“L” level input voltage
VIH 0.7VDD
-
VDD
V
VIL
VSS
-
0.3VDD V
“H” level input current
IIH
-
-
1
uA
“L” level input current
IIL
-1
-
LCD Driver on
SEG RON
-
3.5
resistance
COM RON
-
3.5
-
uA
-
kΩ Iload=±10uA
-
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
(VDD=2.5～5.5V,VSS=0V, Ta=-40～85degree)
Parameter
Frame frequency
Frame frequency1
Symbol
fCLK
fCLK1
MIN
56
70
● MPU interface Characteristics
(VDD=2.5V～5.5V,VSS=0V, Ta=-40～85degree)
Parameter
Input rise time
Input fall time
SCL cycle time
“H” SCL pulse width
“L” SCL pulse width
SD setup time
SD hold time
CSB setup time
CSB hold time
“H” CSB pulse width
Symbol
MIN
tr
-
tf
-
tSCYC 400
tSHW 100
tSLW 100
tSDS
20
tSDH
50
tCSS
50
tCSH
50
tCHW 50
Limit
TYP
80
80
Limit
TYP
-
-
-
-
-
-
-
-
-
-
MAX
104
90
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
tCHW
CSB
SCL
SD
tCSS
tf
tSLW
tr
tSCYC
tSHW
tSDS tSDH
tCSH
Fig.1 3wire Serial timing waveform
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3/15
2009.07 - Rev.B