bu9798kv ROHM Co. Ltd., bu9798kv Datasheet - Page 3

• Manufacturer Part Number: bu9798kv
• Description: Lcd Control Driver For Segment Type Lcd Display
• Manufacturer: ROHM Co. Ltd.

○ Load regulation
Caution : Please use regulator at “Regulator output voltage < VLCD – 0.5V”
**
○ MPU interface Characteristics
○ Terminal number/name
○Oscillation Frequency Characteristics
CLKIN input frequency
Load Regulation (**)
1
2
3
4
5
6
7
8
Frame frequency 1
Frame frequency 2
Frame frequency 3
Output voltage 1
Output voltage 2
“H” CSB pulse width
“H” SCL pulse width
“L” SCL pulse width
Parameter
Parameter
TEST1
VLCD
VSS1
INHb
VDD
CSB setup time
CSB
SCL
SCL cycle time
Input rise time
CSB hold time
Input fall time
SD
SD setup time
SD hold time
Parameter
10
12
13
14
15
16
11
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
9
COM0
COM1
COM2
COM3
SEG0
SEG1
SEG2
SEG3
Symbol
Symbol
Vreg1
Vreg2
fCLK
fFR1
fFR2
fFR3
Vreg
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 )
17
18
19
20
21
22
23
24
Symbol
tSCYC
tCHW
tSHW
tSLW
tSDH
tCSH
tSDS
tCSS
tr
tf
SEG10
SEG11
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
MIN
MIN
45.0
57.6
51.2
4.35
4.42
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
-
-
MIN
250
50
50
50
50
50
50
50
-
-
26
28
29
30
32
25
27
31
Limit
Limit
TYP
TYP
4.5
4.5
64
64
2
-
-
SEG19
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
Limit
TYP
-
-
-
-
-
-
-
-
-
-
REV. A
MAX
MAX
70.4
73.0
4.65
4.58
0.3
64
33
34
35
36
37
38
39
40
4
MAX
50
50
-
-
-
-
-
-
-
-
SEG20
SEG21
SEG23
SEG24
SEG25
SEG27
SEG22
SEG26
MHz
Unit
Unit
Hz
Hz
Hz
V
V
V
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
41
42
43
44
45
46
47
48
SEG31
SEG32
SEG33
SEG35
SEG28
SEG29
SEG30
SEG34
4.5V setting (VLCD=5.5V, Ta=-30~75degree)
VDD=3.3V, Ta=25degree, fFR=64Hz setting
4.5V setting (VLCD=5.5V, Ta=25degree)
VDD=2.5~3.6V fFR=64Hz setting
VDD=1.8~2.5V fFR=64Hz setting
49
50
51
52
53
54
55
56
Iout = -300uA
SEG36
SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
Condition
Condition
Condition
57
58
59
60
61
62
63
64
PWMOUT
CLKIN
SEG44
SEG45
SEG46
SEG47
SEG48
VSS2
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