Overview
The PCA8561AHN/A518 is an ultra-low-power LCD segment driver produced by NXP USA Inc. This component is designed for automotive and other low-power applications, featuring either an I2C or SPI bus interface, depending on the variant. The PCA8561AHN specifically uses a 400 kHz I2C-bus interface. It is a single-chip LCD controller and driver that includes an internal oscillator, bias generation, instruction decoding, and a display controller. This device is compliant with AEC-Q100 grade 2, making it suitable for high-temperature automotive environments up to 105 °C.
Key Specifications
| Specification | Details |
|---|---|
| Interface | 400 kHz I2C-bus (PCA8561AHN) |
| Segment and Backplane Outputs | 18 segment drives, 4 backplane outputs |
| Display Configuration | Up to 9 7-segment numeric characters, up to 4 14-segment alphanumeric characters, or any graphics of up to 72 segments/elements |
| Power Supply | VLCD and VDD: 1.8 V to 5.5 V |
| Package | HVQFN32, 5 mm × 5 mm × 0.85 mm |
| Temperature Range | AEC-Q100 grade 2 compliant, up to 105 °C |
| Clock Signal | Internally generated or externally supplied |
Key Features
- Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
- Selectable display bias configuration: static, 1⁄2, or 1⁄3
- Internal LCD bias generation with buffers
- Auto-incrementing display data and instruction loading
- Versatile blinking modes
- Independent supplies of VLCD and VDD
- Ultra-low power consumption
- Internally generated or externally supplied clock signal
Applications
- Small displays integrated in car instrument clusters or control knobs
- Battery-operated applications
- Healthcare devices
Q & A
- What is the PCA8561AHN/A518 used for?
The PCA8561AHN/A518 is used as an ultra-low-power LCD segment driver, particularly in automotive and other low-power applications.
- What type of interface does the PCA8561AHN use?
The PCA8561AHN uses a 400 kHz I2C-bus interface.
- How many segment and backplane outputs does the PCA8561AHN have?
The PCA8561AHN has 18 segment drives and 4 backplane outputs.
- What is the power supply range for the PCA8561AHN?
The power supply range for both VLCD and VDD is 1.8 V to 5.5 V.
- Is the PCA8561AHN suitable for high-temperature environments?
Yes, it is AEC-Q100 grade 2 compliant, making it suitable for temperatures up to 105 °C.
- What types of displays can the PCA8561AHN support?
The PCA8561AHN can support up to 9 7-segment numeric characters, up to 4 14-segment alphanumeric characters, or any graphics of up to 72 segments/elements.
- Does the PCA8561AHN have internal clock generation?
Yes, the PCA8561AHN can use either an internally generated or externally supplied clock signal.
- What is the package type and size of the PCA8561AHN?
The PCA8561AHN comes in an HVQFN32 package, measuring 5 mm × 5 mm × 0.85 mm.
- What are some common applications of the PCA8561AHN?
Common applications include small displays in car instrument clusters, control knobs, battery-operated devices, and healthcare devices.
- Does the PCA8561AHN support versatile display configurations?
Yes, it supports selectable backplane drive and display bias configurations.
