Samsung KS0794 Datasheet
KS0794
permission of LCD Driver IC Team.
160 COM / 160 SEG DRIVER FOR STN LCD
Contents in this document are subject to change without notice. No part of this document may be reproduced or
transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written
August.1999.
Ver. 1.1
Prepared by: Gyeong-Nam, Kim
kgn@samsung.co.kr
160 COM / SEG DRIVER FOR STN LCD PRELIMINARY SPEC. VER. 1.1 KS0794
KS0794 Specification Revision History
Version Content Date
0.0 l Original Apr.1999
1.0 l Including application note. Jul.1999
1.1 l p6, p16 revision. Aug.1999
2
KS0794 PRELIMINARY SPEC. VER. 1.1 160 COM / SEG DRIVER FOR STN LCD
CONTENTS
INTRODUCTION ..................................................................................................................................................4
FEATURES..........................................................................................................................................................4
BLOCK DIAGRAM...............................................................................................................................................5
PAD CONFIGURATION .......................................................................................................................................6
PAD CENTER COORDINATES ............................................................................................................................7
PIN DESCRIPTION ..............................................................................................................................................9
FUNCTIONAL DESCRIPTION............................................................................................................................ 10
BLOCK FUNCTION.....................................................................................................................................10
PIN FUNCTION...........................................................................................................................................11
FUNCTIONAL OPERATIONS......................................................................................................................15
SPECIFICATIONS..............................................................................................................................................18
ABSOLUTE MAXIMUM RATINGS...............................................................................................................18
RECOMMENDED OPERATING CONDITIONS ...........................................................................................18
DC CHARACTERISTICS.............................................................................................................................19
AC CHARACTERISTICS.............................................................................................................................21
PRECAUTION.................................................................................................................................................... 27
CONNECTION EXAMPLES OF PLURAL SEGMENT DRIVERS........................................................................28
TIMING CHART OF 4-DEVICE CASECADE CONNECTION OF SEGMENT DRIVERS......................................29
CONNECTION EXAMPLES OF PLURAL COMMON DRIVERS.........................................................................30
3
160 COM / SEG DRIVER FOR STN LCD PRELIMINARY SPEC. VER. 1.1 KS0794
INTRODUCTION
The KS0794 is a 160-output segment / common driver LSI suitable for driving large scale dot matrix LC panels
using as 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 LC module.
The KS0794 is good both segment driver and common driver, and a low power consuming, high-precision LC
panel display can be assembled.
In case of segment mode, the data input is selected 4bit parallel input mode and 8bit parallel input mode by a
mode (MD) pin.
In case of common mode, data input/output pins are bi-directional, four data shift directions are pin-selectable.
FEATURES
BOTH SEGMENT MODE AND COMMON MODE
- Supply voltage for LC driver: +15.0 to +32.0V
- Number of LC driver outputs: 160
- Low output impedance
- Low power consumption
- Supply voltage for the logic system: +2.4V to +5.5V
- CMOS silicon gate process (P-type silicon substrate)
- Package: 190-pin TCP (Tape Carrier Package) & Au bump chip
Segment Mode
- Shift clock frequency: 14MHz (Max.) (Vdd = +5V ± 10%)
8MHz (Max.) (Vdd = +2.4V to +4.5V)
- Adopts a data bus system
- 4-bit / 8-bit parallel input modes are selectable with a mode (MD) pin
- Automatic transfer function of an enable signal
- Automatic counting function which, in the chip select, causes the internal clock to be stopped
by automatically counting 160 of input data
- Line latch circuit reset function when DISPOFFB active
Common Mode
- Shift clock frequency: 4.0MHz (Max.) (Vdd = +2.4V to +5.5V)
- Built-in 160 bits bi-directional shift register (divisible into 80-bits ×2)
- Available in a single mode (160 bits shift register) or in a dual mode (80 bits shift register ×2)
- Shift register circuit reset function when DISPOFFB active
4
KS0794 PRELIMINARY SPEC. VER. 1.1 160 COM / SEG DRIVER FOR STN LCD
BLOCK DIAGRAM
V
OR
V
12R
V
FR
DISPOFFB
EIO1
EIO2
LP
XCK
182
179
181
169
180
178
43RV5L
190 189 188 164
LEVEL
SHIFTER
ACTIVE
CONTROL
CONTROL
LOGIC
Y
1
Y
2
1 2 160159
160 BITS 4-LEVEL DRIVER
160 BITS LEVEL SHIFTER
160 BITS LINE LATCH/SHIFTER
REGISTER
16 16
8BITS*2
DATA
LATCH
16
16 16
160
160
16 16
16
Y
159
160
187
V
5L
163
V
43L
162
161
16
16
12L
V
V
OL
Y
L/R
MD
S/C
166
183
168
DATA LATCH CONTROL
8
SP CONVERSION & DATA CONTROL
(4 to 8 or 8to 8)
170 171 172 173 174 175 176 177 165 186167
D I0D I1D
I
2
D I3DI4DI5DI6DI
7
Figure 1. Block Diagram
V
SS
V
V
DD
SS
5
160 COM / SEG DRIVER FOR STN LCD PRELIMINARY SPEC. VER. 1.1 KS0794
1
160
ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð ð
ð ð ð ð
ð ð ð ð
PAD CONFIGURATION
161
ррррррррррррррррррррр
- - - - - - - - - -
рррррррррррррррррррр
Y
KS0794
(TOP VIEW,Pad up)
(0,0)
X
ð
Figure 2. KS0794 Chip Configuration
Table 1. KS0794 Pad Dimensions
Item Pad No.
Chip size - 11000 1100
1 to 160 65 (Min.)
Pad pitch
161 to 190 260 (Min.)
Size
X Y
190
186 DummyDummy 165
187164
Unit
Bumped pad size
Bumped pad
height
1 to 160 43 108
161 to 164
187 to 190
165 to 186 58 76
1 to 190 14 (Typ.)
76 58
µm
6
KS0794 PRELIMINARY SPEC. VER. 1.1 160 COM / SEG DRIVER FOR STN LCD
50
Y50
1982.5
395
100
Y100
-1267.5
395
150
Y150
-4517.5
395
PAD CENTER COORDINATES
Table 2. Pad Location
[Unit: µm]
NO NAME X Y NO NAME X Y NO NAME X Y
1 Y1 5167.5 395 51 Y51 1917.5 395 101 Y101 -1332.5 395
2 Y2 5102.5 395 52 Y52 1852.5 395 102 Y102 -1397.5 395
3 Y3 5037.5 395 53 Y53 1787.5 395 103 Y103 -1462.5 395
4 Y4 4972.5 395 54 Y54 1722.5 395 104 Y104 -1527.5 395
5 Y5 4907.5 395 55 Y55 1657.5 395 105 Y105 -1592.5 395
6 Y6 4842.5 395 56 Y56 1592.5 395 106 Y106 -1657.5 395
7 Y7 4777.5 395 57 Y57 1527.5 395 107 Y107 -1722.5 395
8 Y8 4712.5 395 58 Y58 1462.5 395 108 Y108 -1787.5 395
9 Y9 4647.5 395 59 Y59 1397.5 395 109 Y109 -1852.5 395
10 Y10 4582.5 395 60 Y60 1332.5 395 110 Y110 -1917.5 395
11 Y11 4517.5 395 61 Y61 1267.5 395 111 Y111 -1982.5 395
12 Y12 4452.5 395 62 Y62 1202.5 395 112 Y112 -2047.5 395
13 Y13 4387.5 395 63 Y63 1137.5 395 113 Y113 -2112.5 395
14 Y14 4322.5 395 64 Y64 1072.5 395 114 Y114 -2177.5 395
15 Y15 4257.5 395 65 Y65 1007.5 395 115 Y115 -2242.5 395
16 Y16 4192.5 395 66 Y66 942.5 395 116 Y116 -2307.5 395
17 Y17 4127.5 395 67 Y67 877.5 395 117 Y117 -2372.5 395
18 Y18 4062.5 395 68 Y68 812.5 395 118 Y118 -2437.5 395
19 Y19 3997.5 395 69 Y69 747.5 395 119 Y119 -2502.5 395
20 Y20 3932.5 395 70 Y70 682.5 395 120 Y120 -2567.5 395
21 Y21 3867.5 395 71 Y71 617.5 395 121 Y121 -2632.5 395
22 Y22 3802.5 395 72 Y72 552.5 395 122 Y122 -2697.5 395
23 Y23 3737.5 395 73 Y73 487.5 395 123 Y123 -2762.5 395
24 Y24 3672.5 395 74 Y74 422.5 395 124 Y124 -2827.5 395
25 Y25 3607.5 395 75 Y75 357.5 395 125 Y125 -2892.5 395
26 Y26 3542.5 395 76 Y76 292.5 395 126 Y126 -2957.5 395
27 Y27 3477.5 395 77 Y77 227.5 395 127 Y127 -3022.5 395
28 Y28 3412.5 395 78 Y78 162.5 395 128 Y128 -3087.5 395
29 Y29 3347.5 395 79 Y79 97.5 395 129 Y129 -3152.5 395
30 Y30 3282.5 395 80 Y80 32.5 395 130 Y130 -3217.5 395
31 Y31 3217.5 395 81 Y81 -32.5 395 131 Y131 -3282.5 395
32 Y32 3152.5 395 82 Y82 -97.5 395 132 Y132 -3347.5 395
33 Y33 3087.5 395 83 Y83 -162.5 395 133 Y133 -3412.5 395
34 Y34 3022.5 395 84 Y84 -227.5 395 134 Y134 -3477.5 395
35 Y35 2957.5 395 85 Y85 -292.5 395 135 Y135 -3542.5 395
36 Y36 2892.5 395 86 Y86 -357.5 395 136 Y136 -3607.5 395
37 Y37 2827.5 395 87 Y87 -422.5 395 137 Y137 -3672.5 395
38 Y38 2762.5 395 88 Y88 -487.5 395 138 Y138 -3737.5 395
39 Y39 2697.5 395 89 Y89 -552.5 395 139 Y139 -3802.5 395
40 Y40 2632.5 395 90 Y90 -617.5 395 140 Y140 -3867.5 395
41 Y41 2567.5 395 91 Y91 -682.5 395 141 Y141 -3932.5 395
42 Y42 2502.5 395 92 Y92 -747.5 395 142 Y142 -3997.5 395
43 Y43 2437.5 395 93 Y93 -812.5 395 143 Y143 -4062.5 395
44 Y44 2372.5 395 94 Y94 -877.5 395 144 Y144 -4127.5 395
45 Y45 2307.5 395 95 Y95 -942.5 395 145 Y145 -4192.5 395
46 Y46 2242.5 395 96 Y96 -1007.5 395 146 Y146 -4257.5 395
47 Y47 2177.5 395 97 Y97 -1072.5 395 147 Y147 -4322.5 395
48 Y48 2112.5 395 98 Y98 -1137.5 395 148 Y148 -4387.5 395
49 Y49 2047.5 395 99 Y99 -1202.5 395 149 Y149 -4452.5 395
7
160 COM / SEG DRIVER FOR STN LCD PRELIMINARY SPEC. VER. 1.1 KS0794
NO
NAME
X
Y
151
Y151
-4582.5
395
152
Y152
-4647.5
395
153
Y153
-4712.5
395
154
Y154
-4777.5
395
155
Y155
-4842.5
395
156
Y156
-4907.5
395
157
Y157
-4972.5
395
158
Y158
-5037.5
395
159
Y159
-5102.5
395
160
Y160
-5167.5
395
161
VOL
-5369
330
162
V12L
-536990163
V43L
-5369
-120
164
V5L
-5369
-330
DUMMY1
-4860
-419
165
VSS
-4600
-419
166LR-4340
-419
167
VDD
-4080
-419
168SC-3820
-419
169
EIO2
-3560
-419
170
DI0
-3300
-419
171
DI1
-3040
-419
172
DI2
-2780
-419
173
DI3
-2520
-419
174
DI4
-2260
-419
175
DI5
-2000
-419
176
DI6
-1740
-419
177
DI7
-1480
-419
178
XCK
2290
-419
179
DISPOFFB
2550
-419
180LP2810
-419
181
EIO1
3070
-419
182FR3330
-419
183MD3590
-419
184NC3850
-419
185NC4110
-419
186
VSS
4370
-419
DUMMY2
4630
-419
187
V5R
5369
-330
188
V43R
5369
-120
189
V12R
536990190
V0R
5369
330
Table 2. Pad Location (Continued)
[Unit: µm]
8
KS0794 PRELIMINARY SPEC. VER. 1.1 160 COM / SEG DRIVER FOR STN LCD
PIN DESCRIPTION
Table 3. Pin Description
Pin No. Symbol I/O Description
1 to 160
161, 190
162, 189
163, 188
164, 187
166
167
168
169
170 to
176
177
178
179
180
181
182
Y1 – Y160 O LC driver output
V0L, V0R - Power supply for LC driver
V12L, V12R - Power supply for LC driver
V43L, V43R - Power supply for LC driver
V5L, V5R - Power supply for LC driver
L/R I Display data shift direction selection
VDD - Power supply for logic system (+2.4 to +5.5V)
S/C I Segment mode/common mode selection
EIO2 I/O Input / output for chip select or data of shift register
DI0 – DI6 I Display data input for segment mode
DI7 I Display data input for segment mode / dual mode data input
XCK I Display data shift clock input for segment mode
DISPOFFB I Control input for deselect output level
LP I Latch pulse input / shift clock input for shift register
EIO1 I/O Input/output for chip select or data of shift register
FR I AC-converting signal input for LC driver waveform
183
165, 186
MD I Mode selection input
VSS - Ground (0V)
9
160 COM / SEG DRIVER FOR STN LCD PRELIMINARY SPEC. VER. 1.1 KS0794
FUNCTIONAL DESCRIPTION
BLOCK FUNCTION
. Active Control
In case of segment mode, controls the selection or deselection of the chip. Following a LP
signal, and after the chip select signal is input, a select signal is generated internally until 160
bits of data have been read in.
Once data input has been completed, a select signal for cascade connection is output, and the
chip is deselected.
In case of common mode, controls the input/output data of bidirectional pins.
. SP Conversion & Data Control
In case of segment mode, keep input data which are 2 clocks of XCK at 4-bit parallel mode into
latch circuit, or keep input data which are 1 clock of XCK at 8-bits parallel mode into latch
circuit, after that they are put on the internal data bus 8 bits at a time.
. Data Latch Control
In case of segment mode, selects the state of the data latch which reads in the data bus
signals. The shift direction is controlled by the control logic, for every 16 bits of data read in,
the selection signal shifts one bit based on the state of the control circuit.
. Data Latch
In case of segment mode, latches the data on the data bus. The latched state of each LC
driver output pin is controlled by the control logic and the data latch control, 160 bits of data
are read in 20 sets of 8 bits.
. Line Latch / Shift Register
In case of segment mode, all 160 bits which have been read into the data latch are
simultaneously latched on the falling edge of the LP signal, and output to the level shifter block.
In case of common mode, shifts data from the data input pin on the falling edge of the LP
signal.
. Level Shifter
The logic voltage signal is level-shifted to the LC driver voltage level, and output to the driver
block.
. 4-level Driver
Driver the LC driver output pins from the line latch/shift register data, selecting one of 4 levels
(V0, V12, V43, V5) based on the S/C, FR and DISPOFFB signals.
. Control Logic
Controls the operation of each block. In case of segment mode, when a LP signal has been
input, all blocks are reset and the control logic waits for the selection signal output from the
active control block.
Once the selection signal has been output, operation of the data latch and data transmission
are controlled, 160 bits of data are read in, and the chip is deselected. In case of common
mode, controls the direction of data shift.
10
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