LC75842EHS-E

Product Overview

Category: Integrated Circuit (IC)

Use: The LC75842EHS-E is a versatile IC primarily used for driving liquid crystal displays (LCDs). It provides an efficient and reliable solution for controlling the display of information in various electronic devices.

Characteristics: - High compatibility with LCD panels - Low power consumption - Wide operating voltage range - Excellent display quality - Compact package size

Package: The LC75842EHS-E is available in a small outline package (SOP) which ensures easy integration into electronic devices. The package dimensions are 10.2mm x 5.3mm x 1.7mm.

Essence: This IC serves as a crucial component in LCD-based systems, enabling the control and manipulation of pixels to display text, graphics, and other visual content.

Packaging/Quantity: The LC75842EHS-E is typically sold in reels containing 2,000 units per reel.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Maximum Display Segments: 80
• Maximum Common Outputs: 16
• Maximum Output Current: 30mA
• Serial Interface: 4-wire SPI (Serial Peripheral Interface)
• Package Type: SOP-24

Detailed Pin Configuration

The LC75842EHS-E features a total of 24 pins, each serving a specific function. Here is a detailed pin configuration:

1. VDD: Power supply voltage input
2. VSS: Ground reference
3. MISO: Master In Slave Out (SPI interface)
4. MOSI: Master Out Slave In (SPI interface)
5. SCLK: Serial Clock (SPI interface)
6. CS: Chip Select (SPI interface)
7. RESET: Reset input
8. V1 to V4: Voltage outputs for LCD driving
9. VLCD: LCD driving voltage output
10. VLED: LED backlight driving voltage output
11. SEG1 to SEG40: Segment outputs
12. COM1 to COM16: Common outputs

Functional Features

• High-speed data transfer via the SPI interface
• Built-in display RAM for storing pixel information
• Programmable duty cycle and bias ratio for optimal display performance
• Support for various display modes (static, scrolling, blinking, etc.)
• Brightness control for LED backlighting
• On-chip oscillator for generating internal timing signals

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows compatibility with different power sources - Low power consumption contributes to energy efficiency - Compact package size enables space-saving designs - Excellent display quality enhances visual experience - Versatile display modes provide flexibility in content presentation

Disadvantages: - Limited maximum display segments and common outputs may restrict certain applications - Lack of built-in non-volatile memory requires external storage for display data retention during power-off situations

Working Principles

The LC75842EHS-E operates by receiving data through the SPI interface, which is then stored in its internal display RAM. The IC generates appropriate timing signals and drives the LCD panel by controlling the segment and common outputs. The voltage outputs V1 to V4, VLCD, and VLED provide the necessary driving voltages for the LCD and LED backlight.

Detailed Application Field Plans

The LC75842EHS-E finds extensive application in various electronic devices that utilize LCDs for displaying information. Some notable application fields include: - Automotive instrument clusters - Home appliances (microwaves, washing machines, etc.) - Industrial equipment (measurement devices, control panels, etc.) - Consumer electronics (audio systems, digital cameras, etc.) - Medical devices (patient monitors, diagnostic equipment, etc.)

Detailed and Complete Alternative Models

1. LC75841EHS-E: Similar to the LC75842EHS-E but with a reduced number of maximum display segments (64 instead of 80).
2. LC75843EHS-E: Similar to the LC75842EHS-E but with an increased number of maximum display segments (96 instead of 80).
3. LC75844EHS-E: Similar to the LC75842EHS-E but with an extended operating temperature range (-40°C to +105°C).

These alternative models provide options for different display requirements and environmental conditions.

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