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1
DESCRIPTION
The LH168M is a 384-output TFT-LCD source
driver IC which can simultaneously display 262 144
colors in 64 gray scales.
FEATURES
Number of LCD drive outputs : 384
Built-in 6-bit digital input DAC
Dot-inversion drive : Outputs the inverted gray
scale voltages between LCD drive pins next to
each other
RSDS
TM*
(Reduced Swing Differential Signaling)
input interface (Data and CK) : Possible to reduce
Electro-Magnetic I_nterference (EMI)
Possible to display 262 144 colors in 64 gray scales
with reference voltage input of 18 gray scales : This
reference voltage input corresponds to correction
and intermediate reference voltage input can be
abbreviated
Cascade connection
Sampling sequence :
Output shift direction can be selected
XO
1
, YO
1
, ZO
1
/
XO
128
, YO
128
, ZO
128
or
ZO
128
, YO
128
, XO
128
/
ZO
1
, YO
1
, XO
1
Shift clock frequency : 68 MHz (MAX.)
Supply voltages
– V
CC
(for logic system) : +3.0 to +3.6 V
– V
LS
(for LCD drive system) : +12 V (MAX.)
Package : 434-pin TCP (Tape Carrier Package)
* RSDS is a trademark of National Semiconductor Corporation.
SHARP recommends FPD87310 of National Semiconductor
Corporation as a timing controller for RSDS
TM
.
PIN CONNECTIONS
LH168M
LH168M
384-output TFT-LCD Source Driver IC
XO
128
YO
128
ZO
128
382
383
384
XO
1
YO
1
ZO
1
1
2
3
C
SPOI
X
0
P
X
0
N
X
1
P
X
1
N
X
2
P
X
N
POL
REV
LS
CKP
CKN
GND
GND
VH
0
VH
8
VH
16
VH
24
VH
32
VH
40
VH
48
VH
56
VH
64
GND
V
LS
VL
64
VL
56
VL
48
VL
40
VL
32
VL
24
VL
16
VL
8
VL
0
LBR
V
CC
V
CC
Y
0
P
Y
0
N
Y
1
P
Y
1
N
Y
2
P
Y
2
N
Z
0
P
Z
0
N
Z
1
P
Z
1
N
Z
2
P
Z
N
SPIO
434
433
432
431
430
429
428
427
426
425
424
423
422
421
420
419
418
417
416
415
414
413
412
411
410
409
408
407
406
405
404
403
402
401
400
399
398
397
396
395
394
393
392
391
390
389
388
387
386
385
434-PIN TCP
TOP VIEW
NOTE :
Doesn't prescribe TCP outline.