BU97931FV Datasheet, PDF (4/32 Pages) Rohm – Multifunction LCD Segment Driver

BU97931FV MAX 112 segments (SEG28×COM4)
●Electrical Characteristics – continued
DC characteristics (Ta= -40°C to +85°C, VDD=1.8V to 3.6V, VLCD=3.3V to 5.5V, VSS=0)
Parameter
Limits
Symbol
Unit
MIN TYP MAX
Conditions
Current consumption (*1)
IstVDD
-
IstVLCD -
IVDD1
-
IVDD2
-
IVLCD1
-
IVLCD2
-
3
10
µA
Input terminal ALL’L’,
Display off, Oscillation off
0.5
5
µA
Input terminal ALL’L’,
Display off, Oscillation off
VDD=3.3V, Ta=25°C, 1/3bias, fFR=64Hz,
8
15 µA PWM generate off,
All output pin open
VDD=3.3V, Ta=25°C, 1/3bias, fFR=64Hz,
30
45 µA PWM Frequency=500Hz setting,
All output pin open
VLCD=5.0V, Ta=25°C, 1/3bias, fFR=64Hz,
10
15 µA LED generate off,
All output pin open
VLCD=5.0V, Ta=25°C, 1/3bias, fFR=64Hz,
30
48 µA PWM Frequency=500Hz setting,
All output pin open
*1 Power save mode 1 and frame inversion setting
*2 Iload: In case, load current from only one port
Oscillation Frequency Characteristics (Ta= -40°C to +85°C, VDD=1.8V to 3.6V, VLCD=2.7V to 5.5V, VSS=0)
Parameter
Limits
Symbol
Unit
MIN MIN MIN
Conditions
Frame frequency 1
fFR1 57.6 64 70.4 Hz VDD=3.3V, Ta=25°C, fFR=64Hz setting
Frame frequency 2
fFR2 51.2 64 73.0 Hz VDD=2.5V to 3.6V fFR=64Hz setting
Frame frequency 3
fFR3 45.0
-
64 Hz VDD=1.8V to 2.5V fFR=64Hz setting
About detail function, please refer to the frame frequency setting of DISCTL command.
MPU interface Characteristics (Ta= -40°C to +85°C, VDD=1.8V to 3.6V, VLCD=2.7V to 5.5V, VSS=0)
Parameter
Limits
Symbol
unit
MIN TYP MAX
Conditions
Input rise time
tr
-
-
50 ns
Input fall time
tf
-
-
50 ns
SCL cycle time
tSCYC 250
-
-
ns
“H” SCL pulse width
tSHW
50
-
-
ns
“L” SCL pulse width
tSLW
50
-
-
ns
SD setup time
tSDS
50
-
-
ns
SD hold time
tSDH
50
-
-
ns
CSB setup time
tCSS
50
-
-
ns
CSB hold time
tCSH
50
-
-
ns
“H” CSB pulse width
tCHW
50
-
-
ns
tCHW
CSB
tCSS
tf
tr
tSCYC
SCL
tSLW
tSHW
tSDS tSDH
tCSH
SD
Figure 4. Serial Interface Timing
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TSZ02201-0A0A2D300070-1-2
10.Apr.2015 Rev.004