Contents
Features.............................................................. 1
Block Diagram..................................................... 1
Pin Assignment ................................................... 2
Operating Frequency .......................................... 2
Pad Assignment.................................................. 3
Absolute Maximum Ratings................................. 6
DC Characteristics .............................................. 6
AC Characteristics .............................................. 7
Operation ............................................................ 10
Commands.......................................................... 17
Frequency Characteristics................................... 23
Application Circuit Examples ............................... 24
Examples of Connetction to LCD Panel .............. 25
Dot Matrix LCD Driver
S-4543A
The S-4543A is a dot matrix liquid crystal display driver IC having an 8-
bit MPU interface, serial interface, display RAM, CR oscillator, 120
segment driver outputs, and 33 common driver outputs. Since it
operates at a low voltage and low current, it is optimum for the LCD
drivers for the portable equipment.
FEATURES
•
68 family MPU interface
•
Serial interface
•
Shipping:
TCP
Bare chip with gold bumps
•
Wide operating voltage range
Logic power supply voltage: -2.4 to -5.5 V
LCD drive voltage: -2.7 to -11.5 V
•
Built-in CR oscillation circuit: 18 kHz
•
120 segments, 32 common driver outputs, one common
output for icon
•
8-bit×120-segment×4-page
+120 segments for Icon
•
1/32 duty or 1/33 duty selectable
BLOCK DIAGRAM
COM
0
to COM
31
V
1
to V
5
Common decoder
Common counter
Display line
register
Counter
line
Line
address
decoder
COMICN
LCD drive circuit
Display data latch
SEG
0
to SEG
119
Display data RAM
4026 bit
Column address decoder
Column address counter
Column address register
Input/o
utput
Display timing
generator
OSC
2
CR OSC
Command
decoder
Bus
holder
Status
Row address
decoder
OSC
1
MPU interface
C3/2X
E1
E2
D
0
to D
7
A
0
R/WX
P/SX
Figure 1 Block Diagram
Seiko Instruments Inc.
1
Dot Matrix LCD Driver
S-4543A
PIN ASSIGNMENT
Table 1
Pin No.
36, 37
53, 54
57, 59, 61,
64, 65
25
Pin name
V
SS
V
DD
V
1
to V
5
Power supply, negative
Power supply, positive
Power supply pins for driving the liquid crystal. The voltage levels applied must be in
the order shown below:
V
DD
≥V
1
≥V
2
≥V
3
≥V
4
≥V
5
Switching signal input between data display and control command display. Normally,
the least significant bit of the address bus of MPU is connected.
A
0
="0" : D
0
to D
7
are provided for control command input and status output.
A
0
="1" : D
0
to D
7
are provided for displayed data I/O.
CR oscillator input. An oscillator resister R
f
is connected.
An external clock can be input.
CR oscillator output. An oscillator resister R
f
is connected.
When an external clock is input, the OSC
2
pin is open.
Enable input pin 1.
Enables displayed data RAM corresponding to SEG0 to SEG60 both for the parallel
interface and serial interface.
Active "L".
Enable input pin 2.
Enables displayed data RAM corresponding to SEG61 to SEG119 both for the parallel
interface and serial interface.
Active "L".
Read/write signal input
R/WX="H" : Read
R/WX="L" : Write
P/SX : "H" 8-bit data bus connection
tri-state I/O configuration
P/SX : "L" serial interface connection
D0
Serial data input
D1
Clock input
D2
Serial data input
D3 to D7 Open
Test pin. This pin must be connected to V
DD
because "Low" setting of this pin enters to
test mode.
Duty selection.
C3/2X="H" : 1/33 duty. Can be displayed by icon.
C3/2X="L" : 1/32 duty
Parallel interface/serial interface switching
P/SX="H" : 8-bit interface
P/SX="L" : Serial interface
Segment drive output
Pin Assignment
Description
A
0
27
29
31
OSC
1
OSC
2
E1
33
E2
35
R/WX
D
0
to D
7
51
3
TEST
C3/2X
58
P/SX
SEG
0
to SEG
119
COM
0
to COM
31
Common drive output.
Output in the order COM
0
to COM
31
.
66
COMICN
DUMMY
Common drive output for icon.
Output when 1/33 duty is selected.
Insulated from the inside of the IC.
OPERATING FREQUENCY
Table 2 Operating Frequency
Operating Frequency
Internal oscillation
18 kHz
External clock
18 kHz
2
Seiko Instruments Inc.
Dot Matrix LCD Driver
S-4543A
PAD ASSIGNMENT
COM outputs:
29 27 25
30 28 26 24
108
109
COM31
SEG61
SEG62
23
Chip Identification Marks
90
89
COM22
COM21
COM20
A
C
SEG82
SEG83
SEG84
SEG85
SEG86
SEG87
SEG88
SEG89
SEG90
SEG91
SEG92
SEG93
SEG94
SEG95
SEG96
SEG97
SEG98
SEG99
SEG100
SEG101
SEG102
SEG103
SEG104
SEG105
SEG106
SEG107
SEG108
SEG109
SEG110
SEG111
SEG112
SEG113
SEG114
SEG115
SEG116
SEG117
SEG118
SEG119
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
X
Y
(0, 0)
COM0
COMICN
V1
DUMMY
V4
DUMMY
V2
DUMMY
V3
DUMMY
V5
DUMMY
PSX
VDD
VDD
DUMMY
TEST
B
D
D7
D6
D5
D4
(The identification marks are
D3
larger than the actual scaling.)
D2
DUMMY
D1
DUMMY
D0
100
DUMMY
C32X
DUMMY
100
VSS
(-4356,- 1356)
(-4356, 1356)
VSS
Unit:
µm
RWX
(4356, 1356)
(4356,- 1356)
DUMMY
ENB2
DUMMY
ENB1
DUMMY
OSC2
DUMMY
OSC1
•
Chip size:
9.3×2.94 mm
DUMMY
•
Pad pitch:
100
µm
AO
•
Gold bump size:
70× 110
µm
SEG60
SEG59
•
Gold bump height:
22±7
µm
•
Chip thickness:
400±30
µm
1
216
SEG38
SEG37
Note: Connect TEST pin to V
DD.
SEG27
SEG28
197
198
29 31 33 35
30 32 34
SEG output
36
Figure 2 Pad Configuration
Seiko Instruments Inc.
3
Dot Matrix LCD Driver
S-4543A
Table 3 Pin Coordinates
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
Pin name
SEG37
SEG38
SEG39
SEG40
SEG41
SEG42
SEG43
SEG44
SEG45
SEG46
SEG47
SEG48
SEG49
SEG50
SEG51
SEG52
SEG53
SEG54
SEG55
SEG56
SEG57
SEG58
SEG59
SEG60
AO
Dummy
OSC1
Dummy
OSC2
Dummy
E1
Dummy
E2
Dummy
R/WX
VSS
VSS
Dummy
C3/2X
Dummy
D0
Dummy
D1
Dummy
D2
D3
D4
D5
D6
D7
TEST
Dummy
VDD
VDD
X
-4400
-4300
-4200
-4100
-4000
-3900
-3800
-3700
-3600
-3500
-3400
-3300
-3200
-3100
-3000
-2900
-2800
-2700
-2600
-2500
-2400
-2300
-2200
-2100
-2000
-1900
-1800
-1700
-1600
-1500
-1400
-1300
-1200
-1100
-1000
-900
-800
-700
-600
-500
-400
-300
-200
-100
0
100
200
300
400
500
600
700
800
900
Y
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
Pin No.
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
Pin name
P/SX
Dummy
V5
Dummy
V3
Dummy
V2
Dummy
V4
Dummy
V1
COMICN
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16
COM17
COM18
COM19
COM20
COM21
COM22
COM23
Dummy
Dummy
Dummy
Dummy
Dummy
COM24
COM25
COM26
COM27
COM28
COM29
COM30
Dummy
Dummy
Dummy
Dummy
Dummy
Dummy
X
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
4509
Y
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-1329
-900
-800
-700
-600
-500
-400
-300
-200
-100
0
100
200
300
400
500
600
700
800
900
4
Seiko Instruments Inc.