HD66520

Features: · Duty cycle: 1/64 to 1/240· Liquid crystal drive circuits: 160· Low-voltage logic circuit: 3.0 to 5.5-V operation power supply voltage· High-voltage liquid crystal drive circuit: 8 to 28-V liquid crystal drive voltage· Grayscale display: FRC four-level grayscale display· Grayscale memor...

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SeekIC No. : 004360408 Detail

HD66520: Features: · Duty cycle: 1/64 to 1/240· Liquid crystal drive circuits: 160· Low-voltage logic circuit: 3.0 to 5.5-V operation power supply voltage· High-voltage liquid crystal drive circuit: 8 to 28-...

floor Price/Ceiling Price

Part Number:
HD66520
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/27

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Product Details

Description



Features:

· Duty cycle: 1/64 to 1/240
· Liquid crystal drive circuits: 160
· Low-voltage logic circuit: 3.0 to 5.5-V operation power supply voltage
· High-voltage liquid crystal drive circuit: 8 to 28-V liquid crystal drive voltage
· Grayscale display: FRC four-level grayscale display
· Grayscale memory management: Packed pixel
· Internal bit-map display RAM: 76800 bits (160 ×240 lines× two planes)
· CPU interface
- SRAM interface
- Address bus: 16 bits, data bus: 8 bits
·  High-speed draw function: Supports burst transfer mode
·  Arbitration function: Implemented internally (draw access has priority)
·  Access time
-  180 ns (VCC = 5V operation)
-  240 ns (VCC = 3V operation)
·  Low power consumption: VCC = 3.3-V operation
-  360 µA during display (logic circuit, liquid crystal drive circuit)
-  10 mA during RAM access (logic circuit) VCC = 5.5-V operation
-  400 µA during display (logic circuit, liquid crystal drive circuit)
-  16 mA during RAM access (logic circuit)
·  On-chip address management function
·  Refresh unnecessary
·  Internal display off function
·  Package: 208-pin TCP



Pinout

  Connection Diagram


Specifications

Item
Symbol
Ratings
Unit
Notes
Power voltage Logic circuit
LCD drive circuit
VCC
VEE
0.3 to +7.0
VCC 30.0 to VCC + 0.3
V
V
1
Input voltage (1)
Input voltage (2)
VT1
VT2
0.3 to VCC + 0.3
VEE 0.3 to VCC + 0.3
V
V
1, 2
1, 3
Operating temperature
Storage temperature
Topr
Tstg
20 to +75
40 to +125

Notes: 1. The reference point is GND (0V).
2. Applies to pins LS0, LS1, SHL, FLM, CL1, M, A0 to A15, DB0 to DB7,DISPOFF ,CS , WE, and OE
3. Applies to pins V1L, V1R, V2L, V2R, V3L, V3R, V4L, V4R.
4. If the LSI is used beyond its absolute maximum rating, it may be permanently damaged. It should always be used within the limits of its electrical characteristics in order to prevent malfunction or unreliability.



Description

The HD66520 is a column driver for liquid crystal dot-matrix graphic display systems. This HD66520 LSI incorporates 160 liquid crystal drive circuits and a 160 ´ 240 ´ 2-bit bit-map RAM, which is suitable for LCDs in portable information devices. It also includes a general-purpose SRAM interface so that draw access can be easily implemented from a general-purpose CPU. The HD66520 also has a new arbitration method which prevents flicker when the CPU performs draw access asynchronously. The on-chip display RAM greatly decreases power consumption compared to previous liquid crystal display systems because there is no need for high-speed data transfer. The chip also incorporates a four-level grayscale controller for enhanced graphics capabilities, such as icons on a screen.




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