NT7704
240 Output LCD Segment/Common Driver
Features
(Segment mode)
!
Shift Clock frequency:
20 MHz (Max.) (V
DD
= 5 V
±
10%)
12 MHz (Max.) (V
DD
= 2.5V - 4.5V)
!
Adopts a data bus system
!
4-bit/8-bit parallel input modes are selectable with a
mode (MD) pin
!
Automatic transfer function with an enable signal
!
Automatic counting function when in "chip select" mode,
which causes the internal clock to be stopped by
automatically counting 240 bits of input data
(Common mode)
!
Shift clock frequency :
4.0 MHz (Max.)
!
Built-in 240-bits bidirectional shift register (divisible into
120-bits x 2)
!
Available in a single mode (240-bits shift register) or in a
dual mode(120-bits shift register x 2)
1. Y1
→
Y240
Single mode
2. Y240
→
Y1
Single mode
3. Y1
→
Y120, Y121
→
Y240
Dual mode
4. Y240
→
Y121, Y120
→
Y1
Dual mode
The above 4 shift directions are pin-selectable
(Both for segment mode and common mode)
!
!
!
!
!
!
!
Supply voltage for LCD driver: 15.0 to 30.0 V
Number of LCD driver outputs: 240
Low output impedance
Low power consumption
Supply voltage for the logic system: +2.5 to +5.5 V
COMS process
Package: Gold bump die / 272 Pin TCP(Tape Carrier
Package)
!
Not designed or rated as radiation hardened
General Description
The NT7704 is a 240-bit output segment/common driver LSI
suitable for driving large scale dot matrix LCD panels used
by PDA's, personal computers and work stations for
example. Through the use of COG technology, it is ideal for
substantially decreasing the size of the frame section of the
LCD module. The NT7704 is good as both a segment driver
and as a common driver, and a low power consuming, high-
precision LCD panel display can be assembled using the
NT7704. In the segment mode, the data input is selected as
4bit parallel input mode or as 8bit parallel input mode by a
mode (MD) pin. In the common mode, the data input/output
pins are bi-directional and the four data shift directions are
pin-selectable.
Pin Configuration
D
U
M
M
Y
Y
2
4
0
Y
2
3
9
Y
2
3
8
Y
2
3
7
Y
2
3
6
Y
1
2
3
Y
1
2
2
Y
1
2
1
Y
1
2
0
Y
1
1
9
Y
1
1
8
Y
5
Y
4
Y
3
Y
2
Y
1
D
U
M
M
Y
272 271 270 269 268
155 154 153 152 151 150
37 36 35 34 33
NT7704
1
2
3
V
1
2
L
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
D V V
U 0 0
M L L
M
Y
V V V V S E D D D D D D D D X D L E F L M N V N V V V V V D
4 5 S D / I 0 1 2 3 4 5 6 7 C I P I R / D C S C 5 4 1 0 0 U
R 3 2 R R M
R
S
O
3 L S D C O
K S
M
R R
1
2
L
P
Y
O
F
F
1
V1.0
NT7704
Pad Description
Pad No.
1 - 12
13 - 20
21 -28
29 - 40
41 - 66
67 - 92
93 - 94
95 - 97
98, 99, 100 -
116, 117, 118
119 - 121
122 - 124
125 - 127
128 - 130
131 - 133
134 - 136
137 - 139
140 - 142
143 - 168
169 - 180
181 - 188
189 - 196
197 - 208
209 - 448
Designation
V
0L
V
12L
V
43L
V
5L
V
SS
V
DD
S/C
EIO
2
D0 - D6
D7
XCK
DISPOFF
LP
EIO
1
FR
L/R
MD
V
SS
V
5R
V
43R
V
12R
V
0R
Y1 - Y240
I/O
P
P
P
P
P
P
I
I/O
I
I
I
I
I
I/O
I
I
I
P
P
P
P
P
O
Power supply for LCD driver
Power supply for LCD driver
Power supply for LCD driver
Power supply for LCD driver
Ground (0V), these pads must be connected to each other
Power supply for the logic system (+2.5 to +5.5V)
Segment mode/common mode selection
Input/output for chip select or data of the shift register
Display data input for segment mode
Display data input for Segment mode/ Dual mode data input
Display data shift clock input for segment mode
Control input for deselect output level
Latch pulse input/shift clock input for the shift register
Input/output for chip select or data of the shift register
AC-converting signal input for LCD driver waveform
Display data shift direction selection
Mode selection input
Ground (0V), these pads must be connected to each other
Power supply for LCD driver
Power supply for LCD driver
Power supply for LCD driver
Power supply for LCD driver
LCD driver output
Description
3
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