SED1191
CMOS LCD 64-COMMON DRIVER
s
DESCRIPTION
The SED1191 is a dot matrix LCD common (row) driver for driving high-capacity LCD panel at duty cycles
higher than 1/64. The LSI uses two serially connected, 32-bit shift registers to hold the display data, and level
shifter converts the TTL level 64-bit parallel data from the shift registers to levels suitable for use by the LCD
drive circuitry. The SED1191 generates common drive signals using the voltages supplied to LCD drive
voltages pins.
The SED1191 is used in conjunction with the SED1181 (64-bit row driver) to drive a large-capacity dot-matrix
LCD panel.
s
FEATURES
•
Low-power CMOS technology
•
64-bit common (row) driver
•
Display blanking
•
Duty cycle: 1/64 to 1/128
•
Daisy chain enable support
s
SYSTEM BLOCK DIAGRAM
•
Wide range of LCD voltage: –14V to –25V
•
Supply voltage: 5.0V
±
10%
•
Package: ............................... QFP1-80 pin (F
QFP5-80 pin (F
0B
)
5B
)
DIE: Al pad (D
0A
)
D0 (SERIAL DATA)
XSCL
LP, FR
YSCL
YD
LCD
CONTR
SED1181
64
SED1181
64
SED1181
64
SED1181
64
SED1191
64
256 SEG
×
64 COM
DUTY: 1/64
713
SED1191
s
BLOCK DIAGRAM
0
COM
31
LCD Driver
Level Shifter
DI
INH
Voltage Control
YSCL
Shift Register
Level Shifter
FR
5
V
SS
V
DD
V1
V4
V
SSH
32
COM
LCD Driver
Latch
Shift Register
32 bits
32 bits
32 bits
32 bits
32 bits
32 bits
DO
63
s
PINOUT
DO
V
SSH
V
4
NC
NC
NC
NC
V
1
V
SS
V
DD
NC
DI
YSCL
INH
FR
NC
COM63
COM62
COM61
COM60
COM59
COM58
COM57
COM56
COM55
COM54
COM53
COM52
COM51
COM50
COM49
COM48
COM47
COM46
COM45
COM44
COM43
COM42
COM41
COM40
60
55
50
45
65
40
70
35
SED1191
75
Index
30
80
1
5
10
15
20
25
COM39
COM38
COM37
COM36
COM35
COM34
COM33
COM32
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM31
COM30
COM29
COM28
COM27
COM26
COM25
COM24
COM23
COM22
COM21
COM20
COM19
COM18
COM17
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
714
SED1191
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
COM31
COM30
COM29
COM28
COM27
COM26
COM25
COM24
COM23
COM22
COM21
COM20
COM19
COM18
COM17
COM16
COM15
COM14
COM13
COM12
Number
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Name
COM11
COM10
COM 9
COM 8
COM 7
COM 6
COM 5
COM 4
COM 3
COM 2
COM 1
COM 0
COM32
COM33
COM34
COM35
COM36
COM37
COM38
COM39
Number
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
Name
COM40
COM41
COM42
COM43
COM44
COM45
COM46
COM47
COM48
COM49
COM50
COM51
COM52
COM53
COM54
COM55
COM56
COM57
COM58
COM59
Number
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Name
COM60
COM61
COM62
COM63
DO
V
SSH
V4
NC
NC
NC
NC
V1
V
SS
V
DD
NC
DI
YSCL
INH
FR
NC
s
PIN DESCRIPTION
Pin Name
COM0 to COM63
DI
DO
YSCL
FR
INH
V
DD
, V
SS
V1, V4, V
SSH
LCD common drive outputs
Serial data input
Serial data output
Serial data shift clock. Data is shifted through the controller on the
falling edge of this clock
LCD AC-drive signal input
Active-low blanking input
Logic power supply inputs
LCD drive power supply inputs
V
DD
≥
V1
≥
V4
≥
V
SSH
Function
715
SED1191
s
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings
•
Parameter
Supply voltage (1)
Supply voltage (2)
Input voltage
Operating temperature
Storage temperature
Soldering temperature and time
Notes:
1. All voltages referenced to a V
DD
of 0 V.
Symbol
V
SS
V
SSH
V1, V4
V
I
T
opr
T
stg
T
sol
Ratings
–7.0 to +0.3
–28.0 to +0.3
V
SS
–0.3 to +0.3
–20 to +75
–55 to +125
260, 10
Unit
V
V
V
°C
°C
°C,
s
2. V1 and V4 must satisfy the relationship V
DD
≥
V1, V4
≥
V
SSH
3. Exceeding the absolute maximum ratings can cause permanent damage to the device. Functional operation under these
conditions is not implied.
4. Moisture resistance of flat packages can be reduced by the soldering process. Care should be taken to avoid thermally
stressing the package during board assembly.
716
SED1191
•
DC Characteristics
Parameters
Supply voltage (1)
Supply voltage (2)
High level input voltage
Low level input voltage
High level output voltage
Low level output voltage
Input leakage current
Output leakage current
Shift clock
Frame signal
Input capacitance
COM output on
resistance
Quiescent current
Symbol
V
SS
V1
V4
V
SSH
V
IH
V
IL
V
OH
V
OL
I
LI
I
LO
YSCL
FR
C
I
R
COM
I
Q
(V
DD
= 0V, V
SS
= –5.0 V
±10%,
T
a
= –20 to 75°C)
Condition
Rating
Unit
Min
Typ
Max
–5.5
–5.0
–4.5
V
V
SSH
—
V
DD
V
V
SSH
—
V
DD
V
–25.0
—
–14.0
V
0.2xV
SS
—
V
DD
+0.3
V
V
SS
–0.3
—
0.8xV
SS
V
–0.4
—
—
V
—
—
V
SS
+0.4
V
—
0.05
2.0
µA
—
0.05
5.0
µA
—
—
2.5
MHz
—
1/60
—
Sec
—
5.0
8.0
pF
—
—
2.0
0.05
4.0
30.0
kΩ
µA
I
OH
= –0.6 mA
I
OL
= 0.6 mA
0 V
≤
V
I
≤
V
SS
0 V
≤
V
O
≤
V
SS
T
a
= 25°C
V
SSH
= –14.0 V, V
OH
= V
DD
–0.5 V,
V
OL
= V
SSH
+0.5 V COM./ bit
V
SSH
= –18.0 V, V
SS
= –5.5 V,
V
I
= V
DD
V
SS
= –5.0 V,
V
IH
= V
DD
,
V
IL
= V
SS
,
YSCL cycle =
130
µs
(duty 50%), All
“H” output
terminals are
opened at every
data input all
1/128 duty.
V
SS
= –4.5 V,
V
1
= –1.8 V,
V
4
= –16.2 V,
V
SSH
= –18.0 V,
YSCL cycle =
130
µs
(duty 50%), All
“H” output
terminals are
opened at every
data input of
1/128 duty.
Operating current for
the logic
I
SSOP
FR cycle = 130
µs
—
3.0
8.0
µA
Operating current for LCD I
SSHOP
FR cycle = 130
µs
—
70
100
µA
Note:
Error free operation is guaranteed in this range but the output resistance of the LCD drivers is higher than in the recommended
operating range. It is suggested that the driver is tested with the target LCD panel to determine if performance is acceptable.
717
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