BU9798KV Datasheet, PDF (3/5 Pages) Rohm – Silicon monolithic integrated circuit

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○Oscillation Frequency Characteristics ( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
Parameter
Symbol
MIN
Limit
TYP
MAX
Unit
Condition
Frame frequency 1
fFR1
57.6
64
70.4
Hz
VDD=3.3V, Ta=25degree, 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
○ Load regulation ( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
Parameter
Symbol
MIN
Limit
TYP
MAX
Unit
Condition
Output voltage 1
Vreg1
4.35
4.5
4.65
V
4.5V setting (VLCD=5.5V, Ta=-30~75degree)
Output voltage 2
Vreg2
4.42
4.5
4.58
V
4.5V setting (VLCD=5.5V, Ta=25degree)
Load Regulation (**)
Vreg
-
-
0.3
V
Iout = -300uA
Caution : Please use regulator at “Regulator output voltage < VLCD – 0.5V”
**
○ MPU interface Characteristics ( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 )
Parameter
Input rise time
Symbol
MIN
Limit
TYP
MAX
Unit
tr
-
-
50
ns
Input fall time
tf
-
-
50
ns
SCL cycle time
“H” SCL pulse width
tSCYC
250
-
tSHW
50
-
-
ns
-
ns
“L” SCL pulse width
tSLW
50
-
-
ns
SD setup time
SD hold time
tSDS
50
-
tSDH
50
-
-
ns
-
ns
CSB setup time
tCSS
50
-
-
ns
CSB hold time
“H” CSB pulse width
tCSH
50
-
tCHW
50
-
-
ns
-
ns
Condition
○ Terminal number/name
1 CSB 9 COM0
2 SCL 10 COM1
3 SD 11 COM2
4 VDD 12 COM3
5 TEST1 13 SEG0
6 VSS1 14 SEG1
7 INHb 15 SEG2
8 VLCD 16 SEG3
17 SEG4 25 SEG12 33 SEG20 41 SEG28 49 SEG36 57 SEG44
18 SEG5 26 SEG13 34 SEG21 42 SEG29 50 SEG37 58 SEG45
19 SEG6 27 SEG14 35 SEG22 43 SEG30 51 SEG38 59 SEG46
20 SEG7 28 SEG15 36 SEG23 44 SEG31 52 SEG39 60 SEG47
21 SEG8 29 SEG16 37 SEG24 45 SEG32 53 SEG40 61 SEG48
22 SEG9 30 SEG17 38 SEG25 46 SEG33 54 SEG41 62 VSS2
23 SEG10 31 SEG18 39 SEG26 47 SEG34 55 SEG42 63 PWMOUT
24 SEG11 32 SEG19 40 SEG27 48 SEG35 56 SEG43 64 CLKIN
REV. A