Overview
The PCF8576DT/2,118 is a universal LCD driver produced by NXP USA Inc., designed to interface with a wide variety of Liquid Crystal Displays (LCDs) with low multiplex rates. This single-chip LCD controller and driver is versatile and can be used in various display configurations, including static and multiplexed LCDs. It is compatible with most microcontrollers and communicates via a 400 kHz I2C-bus interface, making it efficient for a range of applications.
Key Specifications
| Parameter | Description |
|---|---|
| Package | TSSOP56 |
| Number of Segment Outputs | 40 (S0 to S39) |
| Number of Backplane Outputs | 4 (BP0 to BP3) |
| Display Bias Configuration | Static, 1/2, or 1/3 |
| Backplane Drive Configuration | Static or 2, 3, 4 backplane multiplexing |
| Power Supply Range | 1.8 V to 5.5 V |
| LCD Supply Range | 2.5 V to 6.5 V |
| I2C-Bus Interface | 400 kHz |
| Display Data Storage | 40 × 4-bit RAM |
| Environmental Compliance | PbFree, EU RoHS, Halogen Free, REACH SVHC compliant |
Key Features
- AEC-Q100 compliant for automotive applications (specific models like PCF8576DT/S400/2)
- Single chip LCD controller and driver
- 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
- May be cascaded for large LCD applications (up to 2560 segments/elements possible)
Applications
- Automotive displays (AEC-Q100 compliant models)
- Industrial control panels
- Consumer electronics with LCD displays
- Medical devices with LCD interfaces
- Any application requiring low multiplex rate LCDs, including 7-segment, 14-segment, and dot matrix displays
Q & A
- What is the PCF8576DT/2,118 used for?
The PCF8576DT/2,118 is used as a universal LCD driver to interface with various Liquid Crystal Displays (LCDs) with low multiplex rates.
- What are the key features of the PCF8576DT/2,118?
Key features include selectable backplane and display bias configurations, internal LCD bias generation, 40 segment drives, and a 400 kHz I2C-bus interface.
- What is the power supply range for the PCF8576DT/2,118?
The power supply range is from 1.8 V to 5.5 V, and the LCD supply range is from 2.5 V to 6.5 V.
- Is the PCF8576DT/2,118 environmentally compliant?
- Can the PCF8576DT/2,118 be used in automotive applications?
Yes, specific models like the PCF8576DT/S400/2 are AEC-Q100 compliant for automotive applications.
- How many segment outputs does the PCF8576DT/2,118 have?
The device has 40 segment outputs (S0 to S39).
- What is the I2C-bus interface frequency of the PCF8576DT/2,118?
The I2C-bus interface frequency is 400 kHz.
- Can the PCF8576DT/2,118 be cascaded for larger LCD applications?
- What type of displays can the PCF8576DT/2,118 drive?
- Is the PCF8576DT/2,118 still in production?
The PCF8576DT/2,118 is no longer manufactured, but other versions like the PCF8576DT/2,518 are still active.
