BU97930MUV Datasheet, PDF (9/24 Pages) Rohm – Multifunction Segment Drivers

BU97930MUV,BU97931FV,BU9798KV,BU9798GUW,BU97500KV
Technical Note
Integrated Regulator Characteristics (Ta=-30 ~ 75°C, VDD=1.8V ~ 3.6V, VLCD=3.3V ~ 5.5V, VSS=0)
(BU9798KV)
Parameter
Limits
Symbol
Unit
MIN TYP MAX
Conditions
Output voltage 1
Vreg1 4.35
4.5
4.65 V 4.5V setting (VLCD=5.5V, Ta=-30 ~ 75°C)
Output voltage 2
Load regulation ^(**)
Vreg2 4.42
4.5
4.58 V 4.5V setting (VLCD=5.5V, Ta=25°C)
delta Vreg -
-
0.3 V Iout = -300µA
(BU9798GUW)
Parameter
Symbol
MIN
Limits
TYP
MAX ^Unit
Conditions
Output voltage 1
Vreg1 4.25
4.5
4.70 V 4.5V setting (VLCD=5.5V, Ta=-30 ~ 75°C)
Output voltage 2
Load regulation ^(**)
Vreg2 4.38
4.5
4.62 V 4.5V setting (VLCD=5.5V, Ta=25°C)
delta Vreg -
-
0.3 V Iout = -300µA
* In case integrated regulator using, please satisfy condition that Vreg output lower than VLCD – 0.5V.
(**) Load regulation: Vreg block load regulation only. Do not include other block ability.
Oscillation Frequency Characteristics (Ta=-30 ~ 75°C, VDD=1.8V ~ 3.6V, VLCD=3.3V ~ 5.5V, VSS=0)
Parameter
Symbol
MIN
Limits
TYP
MAX ^Unit
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=2.5 ~ 3.6V fFR=64Hz setting
Frame frequency 3
fFR3
45.0
-
64 Hz VDD=1.8 ~ 2.5V fFR=64Hz setting
CLKIN Input frequency
fCLK
-
2
4 MHz
MPU interface Characteristics (Ta=-30 ~ 75°C, VDD=1.8V ~ 3.6V, VLCD=3.3V ~ 5.5V, VSS=0)
Parameter
Symbol
MIN
Limits
TYP
MAX ^Unit
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
SCL
SD
tCSS
tf
tr
tSCYC
tSLW
tSHW
tSDS tSDH
tCSH
Fig.3 Serial Interface Timing
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9/23
2010.04 - Rev.A