BU91797MUF-M Datasheet, PDF (4/27 Pages) Rohm – Low Duty LCD Segment Driver for Automotive application

BU91797MUF-M MAX 144 segments (SEG36×COM4)
Datasheet
Electrical Characteristics – continued
Oscillation Characteristics (VDD=2.5V to 6.0V, VLCD=0V, VSS=0V, Ta=-40°C to +105°C, unless otherwise specified)
Parameter
Frame Frequency1
Frame Frequency2
Limits
Symbol
Unit
Min
Typ
Max
Conditions
fCLK1
56
80
112
Hz
FR = 80Hz setting,
VDD=2.5V to 6.0V, Ta=-40°C to +105°C
fCLK2
70
80
90 Hz FR = 80Hz setting, VDD=3.3V, Ta=25°C
Frame Frequency3
Frame Frequency4
External Clock Rise Time
fCLK3 77.5 87.5 97.5 Hz FR = 80Hz setting, VDD=5.0V, Ta=25°C
fCLK4 67.5
87.5
108
Hz
FR = 80Hz setting, VDD=5.0V,
Ta=-40°C to +105°C
tr
-
-
0.3 µs
External Clock Fall Time
External Frequency
tf
-
fEXCLK 15
-
0.3
µs _{External clock mode (OSCIN) (Note)}
-
300 KHz
External Clock Duty
tdty
30
50
70
%
(Note) <Frame frequency calculation at external clock mode>
DISCTL 80HZ setting: Frame frequency [Hz] = external clock [Hz] / 512
DISCTL 71HZ setting: Frame frequency [Hz] = external clock [Hz] / 576
DISCTL 64HZ setting: Frame frequency [Hz] = external clock [Hz] / 648
DISCTL 53HZ setting: Frame frequency [Hz] = external clock [Hz] / 768
【Reference Data】
110
100
90
80
70
VDD = 6.0V
VDD = 5.0V
VDD = 3.3V
VDD = 2.7V
60
50
-40 -20
0 20 40 60 80 100
Temperature [°C]
Figure 4. Typical Temperature Characteristics
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TSZ02201-0P4P0D301040-1-2
21.Dec.2015 Rev.001