Overview
The PCF8576DT/2,518 is a universal LCD driver manufactured by NXP USA Inc. This peripheral device is designed to interface with almost any Liquid Crystal Display (LCD) that operates at low multiplex rates. It generates the necessary drive signals for static or multiplexed LCDs, supporting up to four backplanes and up to 40 segments. The device is compatible with most microcontrollers and communicates via a two-line bidirectional I²C-bus, minimizing communication overhead through features like display RAM with auto-incremented addressing and hardware subaddressing.
Key Specifications
| Parameter | Value |
|---|---|
| Voltage - Supply | 1.8 V to 5.5 V |
| Operating Temperature | -40°C to 85°C (TA) |
| Mounting Type | Surface Mount |
| Package Type | TSSOP56 (plastic thin shrink small outline package, 56 leads, body width 6.1 mm) |
| I²C-bus Interface Frequency | Up to 400 kHz |
| LCD Supply Range | From 2.5 V for low-threshold LCDs to 6.5 V for high-threshold twisted nematic LCDs |
Key Features
- Selectable backplane drive configuration: static or 2, 3, 4 backplane multiplexing
- Selectable display bias configuration: static, 1/2, or 1/3
- Internal LCD bias generation with voltage-follower buffers
- 40 segment drives: Up to 20 7-segment numeric characters, up to 10 14-segment alphanumeric characters, or any graphics of up to 160 segments/elements
- 40 4-bit RAM for display data storage
- Auto-incremented display data loading across device subaddress boundaries
- Display memory bank switching in static and duplex drive modes
- Versatile blinking modes
- Independent supplies possible for LCD and logic voltages
- Low power consumption
- Compatible with chip-on-glass and chip-on-board technology
- Manufactured in silicon gate CMOS process
Applications
The PCF8576DT/2,518 is suitable for a wide range of LCD applications, including:
- Industrial control panels
- Automotive displays (AEC-Q100 compliant for automotive applications)
- Consumer electronics
- Medical devices
- Any application requiring low multiplex rate LCDs with up to 40 segments
Q & A
- What is the PCF8576DT/2,518 used for?
The PCF8576DT/2,518 is a universal LCD driver used to interface with Liquid Crystal Displays (LCDs) that operate at low multiplex rates.
- What is the voltage supply range for the PCF8576DT/2,518?
The voltage supply range is from 1.8 V to 5.5 V.
- What is the operating temperature range for the PCF8576DT/2,518?
The operating temperature range is from -40°C to 85°C (TA).
- What type of package does the PCF8576DT/2,518 come in?
The device comes in a TSSOP56 package (plastic thin shrink small outline package, 56 leads, body width 6.1 mm).
- Can the PCF8576DT/2,518 be cascaded for larger LCD applications?
- What is the I²C-bus interface frequency of the PCF8576DT/2,518?
The I²C-bus interface frequency is up to 400 kHz.
- Is the PCF8576DT/2,518 compatible with most microcontrollers?
- What types of LCDs can the PCF8576DT/2,518 support?
- Should the PCF8576DT/2,518 be used for new design-ins?
- What are some common applications of the PCF8576DT/2,518?
