bu9798guw ROHM Co. Ltd., bu9798guw Datasheet - Page 3

• Manufacturer Part Number: bu9798guw
• 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”
** Internal regulator unit only.
○ MPU interface Characteristics
○ Terminal number/name
○Oscillation Frequency Characteristics
CLKIN input frequency
Load Regulation (**)
A1
A2
A3
A4
A5
A6
A7
A8
Frame frequency 1
Frame frequency 2
Frame frequency 3
Output voltage 1
Output voltage 2
“H” SCL pulse width
“H” CSB pulse width
“L” SCL pulse width
Parameter
Parameter
SCL cycle time
CSB setup time
PWMOUT
CSB hold time
Input rise time
Input fall time
SD setup time
SD hold time
SEG48
SEG46
SEG43
SEG41
SEG37
SEG36
Parameter
CSB
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
B1
B2
B3
B4
B5
B6
B7
B8
CLKIN
Symbol
Symbol
SEG44
SEG40
SEG39
SEG35
SEG34
⊿Vreg
VSS2
Vreg1
Vreg2
fCLK
(NC)
fFR1
fFR2
fFR3
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 )
Symbol
tSCYC
tCHW
tSHW
tSLW
tSDH
tCSH
tSDS
tCSS
C1
C2
C3
C4
C5
C6
C7
C8
tr
tf
MIN
MIN
57.6
51.2
45.0
4.25
4.38
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
-
-
SEG45
SEG42
SEG38
SEG33
SEG32
VSS1
SDA
SCL
MIN
250
50
50
50
50
50
50
50
-
-
Limit
Limit
TYP
TYP
D1
D2
D3
D4
D5
D6
D7
D8
4.5
4.5
64
64
2
-
-
Limit
TYP
SEG30
SEG47
SEG31
SEG29
SEG28
VLCD
-
-
-
-
-
-
-
-
-
INHB
-
VDD
REV. B
MAX
MAX
70.4
73.0
4.70
4.62
0.3
64
4
MAX
50
50
E1
E2
E3
E4
E5
E6
E7
E8
-
-
-
-
-
-
-
-
3
SEG15
SEG26
SEG24
SEG27
COM2
COM0
COM1
COM
MHz
Unit
Unit
Hz
Hz
Hz
V
V
V
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
F1
F2
F3
F4
F5
F6
F7
F8
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)
SEG10
SEG13
SEG22
SEG23
SEG25
SEG0
SEG1
SEG6
VDD=2.5~3.6V fFR=64Hz setting
VDD=1.8~2.5V fFR=64Hz setting
G1
G2
G3
G4
G5
G6
G7
G8
Iout = -300uA
Condition
Condition
Condition
SEG12
SEG17
SEG19
SEG21
SEG2
SEG3
SEG7
SEG8
H1
H2
H3
H4
H5
H6
H7
H8
SEG14
SEG16
SEG18
SEG20
SEG11
SEG4
SEG5
SEG9
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