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參數(shù)資料
| 型號(hào)： | BU9729K |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Segment-type LCD driver |
| 中文描述： | 段型LCD驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 4/12頁(yè) |
| 文件大?。?/td> | 146K |
| 代理商： | BU9729K |
4
Standard ICs
BU9729K
Recommended operating conditions (Ta = 25°C, V
SS
= 0V)
Parameter
Symbol
Unit
Max.
Typ.
Min.
Power supply voltage 1
Power supply voltage 2
Oscillation frequency
Electrical characteristics
DC characteristics (unless otherwise noted, V
DD
= 2.5V to 5.5V, V
SS
= 0V, Ta = 25°C)
V
DD
V
LCD
f
OSC
V
V
kHz
Conditions
2.5
2.5
—
5.5
5.5
—
—
—
36
—
The condition V
LCD
^
V
C
^
V
SS
must be satisfied.
R
f
=
470k
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
LCD driver on-resistance
1
Input high level current 2
Input low level current
Input capacitance
Current consumption
Input high level voltage
Input low level voltage
V
IH1
V
IL1
R
ON
I
IL2
I
IH
C
I
I
DD
0.8
×
V
DD
0
—
—
–
2
—
—
—
—
—
—
—
—
—
—
5
0.05
8
40
100
V
DD
0.2
×
V
DD
30
2
—
—
1
25
80
250
k
μ
A
μ
A
pF
μ
A
μ
A
μ
A
μ
A
V
V
V
ON
= 0.1V
V
IN
= 0
V
IN
= V
DD
While quiescent
2
When
“
ALL OFF
”
is displayed
For display operations
3
For access operations
4
Applicable pin
OSC1, SD, SCK, C / D, CS
SEG1
~
32, COM1
~
4
OSC1, SD, SCK, C / D, CS
OSC1, SD, SCK, C / D ,CS
SD,SCK, C / D, CS
V
DD
1 The internal power supply impedance is not included in the LCD driver on-resistance.
2 All input is fixed at either V
DD
or V
SS
.
3 Except for R
f
= 470k
and OSC1, all input is fixed at V
DD
or V
SS
.
4 R
f
= 470k
, fSCK = 200kHz.
—
—
—
—
AC characteristics (unless otherwise noted, V
DD
= 2.5V to 5.5V, V
SS
= 0V, Ta = 25°C)
t
SU2
t
H2
t
SU3
t
H3
t
CCH
t
SCH
100
100
100
100
100
100
—
—
—
—
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
8th rise of SCK used as reference
CS rise used as reference
8th fall of SCK used as reference
5 Should satisfy either one of these conditions.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
SCK rise time
SCK fall time
SCK cycle time
Command wait time
SCK pulse width HIGH
SCK pulse width LOW
Data setup time
Data hold time
CS pulse width HIGH
CS pulse width LOW
CS setup time
CS hold time
C / D setup time
C / D hold time
C / D-CS time
5
C / D-SCK time
5
t
TLH
t
THL
t
CYC
t
WAIT
t
WH1
t
WL1
t
SU1
t
H1
t
WH2
t
WL2
—
—
800
800
300
300
100
100
300
6400
—
—
—
—
—
—
—
—
—
—
100
100
—
—
—
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
—
—
—
—
—
—
—
—
—
—
—
—
—
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