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PDF NT7702 Data sheet ( Hoja de datos )
| Número de pieza | NT7702 | |
| Descripción | 240 Output LCD Segment/Common Driver | |
| Fabricantes | Novatek | |
| Logotipo |  |
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NT7702
240 Output LCD Segment/Common Driver
Features
(Segment mode)
! Shift Clock frequency:
20 MHz (Max.) (VDD = 5 V ± 10%)
! 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 the chip select
mode, 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: 272pin TCP (Tape Carrier Package)
! Not designed or rated as radiation hardened
General Description
The NT7702 is a 240-bit output segment/common driver LSI
suitable for driving large scale dot matrix LCD panels using
as PDA/personal computers/work stations. Through the use
of SST (Super Slim TCP) technology, it is ideal for
substantially decreasing the size of the frame section of the
LCD module. The NT7702 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
NT7702. 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
UYYYYY
M2 2 2 2 2
M4 3 3 3 3
Y0 9 8 7 6
272 271 270 269 268
YYYYYY
111111
222211
321098
155 154 153 152 151 150
D
U
M
YYYY YM
54321Y
37 36 35 34 33
NT7702
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
D V V V V V V V S E D D D D D D D D X D L E F L MN V N V V V V V D
U0 0 1 4 5SD / I 0 1 2 3 4 5 6 7C I P I R / DCSC 5 4 1 0 0U
ML L 2 3 L SDCO
KS O R
S R 3 2RRM
M LL
2
P1
RR
M
Y OY
F
F
1 V1.0
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Input / Output Circuits
VDD
NT7702
I
VSS
VDD
Input Circuit (1)
Input Signal
Applicable Pins
L/R, S/C, D0 - D6,
DISPOFF , LP, FR, MD
I Input Signal
Control Signal Applicable Pins
D7, XCK
VSS
VSS
Input Circuit (2)
5
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NT7702
2. LCD Driver Output Voltage Level
The relationship amongst the data bus signal, AC converted signal FR and LCD driver output voltage is as shown in the table
below:
2.1. Segment Mode
FR
Latch Data
DISPOFF
Driver Output Voltage Level (Y1 - Y240)
L LH
V43
L HH
V5
HLH
V12
HHH
V0
XXL
V5
Here, VSS ≤ V5 < V43 < V12 < V0, H: VDD (+2.5 to +5.5V), L: VSS (0V), X: Don't care
2.2. Common Mode
FR
Latch Data
DISPOFF
Driver Output Voltage Level (Y1 - Y240)
L LH
V43
L HH
V0
HLH
V12
HHH
V5
XXL
V5
Here, VSS ≤ V5 < V43 < V12 < V0, H: VDD (+2.5 to +5.5V), L: VSS (0V), X: Don't care
Note: There are two kinds of power supply (logic level voltage, LCD driver voltage) for the LCD driver. Please supply regular
voltage which assigned by specification for each power pin.
That time "Don't care" should be fixed to "H" or "L", avoiding floating.
11
11 Page | ||
| Páginas | Total 38 Páginas | |
| PDF Descargar | [ Datasheet NT7702.PDF ] | |
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