|
|
Part: LH1694
Category:
Optoelectronics
-> Drivers/Controllers
-> LCDs
Description: 256-output Tft-lcd Gate Driver ic
Company: Sharp Microelectronics of the Americas
Datasheet: Download LH1694 datasheet File size : 960 kB
Request For quote: Find where to buy LH1694
Datasheet text preview:
LH1694
LH1694
DESCRIPTION
The LH1694 is a 256-output TFT-LCD gate driver IC.
256-output TFT-LCD Gate Driver IC
PIN CONNECTIONS
277-PIN TCP TOP VIEW
FEATURES
ˇ Number of LCD drive outputs : 256 ˇ LCD drive output sequence : Output shift direction can be selected OG1/OG256 or OG256/OG1 ˇ Enable chain connection ˇ Usable with both positive/negative power supplies ˇ Output signal masking function ˇ Input signal voltage : +2.7 to +3.6 V ˇ LCD drive voltage : +16.0 to +42.0 V ˇ Operating temperature : 30 to +85 °C ˇ Package : 277-pin TCP (Tape Carrier Package)
VDD VEE VSS VCC VLS GND SVIO R/L CKV OE1 OE2 OE3 SVOI GND TEST2 TEST1 VLS VCC VSS VEE VDD 277 276 275 274 273 272 271 270 269 268 267 266 265 264 263 262 261 260 259 258 257
1 OG1 2 OG2 3 OG3
CHIP SURFACE
254 OG254 255 OG255 256 OG256
NOTE :
Doesn't prescribe TCP outline.
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
1
LH1694
PIN DESCRIPTION
PIN NO. 1 to 256 257, 277 258, 276 259, 275 260, 274 261, 273 264, 272 262, 263 265 266 to 268 269 270 271 SYMBOL OG1-OG256 VDD VEE VSS VCC VLS GND TEST1, TEST2 SVOI OE3-OE1 CKV R/L SVIO I/O O I I/O I I I I/O DESCRIPTION LCD drive output pins Power supply pins for LCD drive Power supply pins for LCD drive Power supply pins for logic system Power supply pins for logic system Power supply pins for logic input/output systems Ground pins for logic input IC test pins Vertical scanning start pulse input/output pin Input pins for output enable Vertical shift clock input pin Pin for selecting bi-directional shift register and setting cascade sequence Vertical scanning start pulse input/output pin
BLOCK DIAGRAM
T TEST1 S ST2 E
262 263 1 CONTROL L OGIC 1 BI-DIRECTIONAL SHIFT REGISTER 256
OOI 265 V
OE3 OE2 C
266 267 LEVEL SHIFTER 256
E1 268
R V 269 K S /L 270 OUTPUT CIRCUIT VIO 271 1 256
257 277 261 273 264 272 260 274 258 276 259 275 VDD VDD VLS VLS GND GND VCC VCC VEE VEE VSS VSS
1 OG1
256 OG256
2
LH1694
FUNCTIONAL OPERATIONS OF EACH BLOCK
BLOCK Control Logic Bi-directional Shift Register Level Shifter Output Circuit FUNCTION Used to create signals necessary for mode selecting signal, cascade sequence setting signal and for operation of bi-directional shift register. Used as transfer circuit of LCD drive output start signal. It is possible to set LCD drive output sequence of OG1/OG256 direction or OG256/OG1 direction. Used as circuit which shifts LCD drive output signals transferred by bi-directional shift register to VDD-VEE level. Configured with output buffers to output VDD-VEE level.
INPUT/OUTPUT CIRCUITS
VLS
I
VSS
,
VLS VSS VLS VSS
To Internal Circuit
Level Shifter Internal Logic (VLS-GND/VCC-VSS) (VCC-VSS)
żApplicable pinsĄ CKV, R/L, OE1-OE3, TEST1, TEST2
Fig. 1 Input Circuit
I
Output Signal O Output Control Signal
(VLS-GND)
Level Shifter (VLS-GND/VCC-VSS)
Fig. 2 Input/Output Circuit
3
To Internal Circuit
żApplicable pinsĄ SVIO, SVOI
Others parts begin by lh
LH-1 LH-2 LH-3 LH-4 LH-5 LH-6 LH-7 LH-8 LH-9 LH-10 LH-11
|
|
|
