LC75821W-E

Product Overview

Category

LC75821W-E belongs to the category of integrated circuits (ICs).

Use

LC75821W-E is commonly used in electronic devices for controlling and driving liquid crystal displays (LCDs).

Characteristics

• Package: LC75821W-E is available in a small outline package (SOP).
• Essence: This IC is designed to provide efficient control and drive capabilities for LCD panels.
• Packaging/Quantity: LC75821W-E is typically sold in reels or trays, with a quantity of 2500 units per reel.

Specifications

The specifications of LC75821W-E include:

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 4 MHz
• Number of Segments: 80
• Number of Common Outputs: 32
• Number of Segment Outputs: 80
• Display Data RAM: 80 bits
• Built-in Oscillator: Yes

Detailed Pin Configuration

The pin configuration of LC75821W-E is as follows:

1. VDD (Power supply)
2. VSS (Ground)
3. OSC (Oscillator input)
4. CLK (Clock input)
5. M (Mode select)
6. CS (Chip select)
7. WR (Write enable)
8. RD (Read enable)
9. D0-D7 (Data inputs/outputs)
10. SEG0-SEG79 (Segment outputs)
11. COM0-COM31 (Common outputs)

Functional Features

LC75821W-E offers the following functional features:

• High-speed operation for efficient control of LCD panels.
• Built-in oscillator for simplified clock generation.
• Multiple modes of operation for versatile display control.
• Easy interfacing with microcontrollers or other control circuits.
• Low power consumption for energy-efficient applications.

Advantages and Disadvantages

Advantages of using LC75821W-E include:

• High-speed operation allows for smooth and responsive display updates.
• Versatile modes of operation enable flexible display control.
• Easy integration with microcontrollers simplifies system design.

Disadvantages of LC75821W-E include:

• Limited number of segment outputs may restrict the complexity of display patterns.
• Requires external components for voltage regulation and LCD panel connection.

Working Principles

LC75821W-E operates by receiving control signals from a microcontroller or other control circuit. It processes these signals to generate appropriate drive signals for the LCD panel. The IC utilizes an internal oscillator to generate the necessary clock signal for synchronization. By controlling the mode select pin, different display modes can be achieved, allowing for various types of information to be displayed on the LCD panel.

Detailed Application Field Plans

LC75821W-E finds applications in various electronic devices that utilize LCD panels, including:

1. Consumer Electronics: LCD TVs, digital cameras, portable media players.
2. Automotive: Car audio systems, dashboard displays, navigation systems.
3. Industrial Equipment: Control panels, measurement instruments, automation systems.
4. Medical Devices: Patient monitors, diagnostic equipment, medical imaging displays.

Detailed and Complete Alternative Models

Some alternative models to LC75821W-E that offer similar functionality are:

1. LC75822W-E
2. LC75823W-E
3. LC75824W-E
4. LC75825W-E

These alternative models provide comparable features and can be considered as substitutes for LC75821W-E based on specific application requirements.

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