Overview
The PCA8576CH/Q900/1,1 is an automotive LCD driver designed by NXP USA Inc. for low multiplex rates. This peripheral device is capable of interfacing with almost any Liquid Crystal Display (LCD), making it versatile for various display configurations. It supports static and multiplexed LCDs with up to four backplanes and up to 40 segments, and can be cascaded for larger LCD applications. The device communicates via the two-line bidirectional I2C-bus, minimizing communication overheads through features like display RAM with auto-incremented addressing and hardware subaddressing.
Key Specifications
| Specification | Description |
|---|---|
| Package Type | LQFP64 (plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm) |
| Supply Voltage | From 2 V for low-threshold LCDs to 6 V for guest-host LCDs and high-threshold twisted nematic LCDs |
| LCD Segment Outputs | Up to 40 segment outputs (S0 to S39) |
| LCD Backplane Outputs | Up to 4 backplane outputs (BP0 to BP3) |
| Communication Interface | Two-line bidirectional I2C-bus |
| Display RAM | 40 × 4-bit RAM for display data storage |
| Power Consumption | Low power consumption with power-saving mode for battery-operated applications |
| Compatibility | AEC-Q100 compliant for automotive applications |
| Cascading Capability | May be cascaded for large LCD applications (up to 2560 segments possible) |
Key Features
- Single-chip LCD controller and driver
- Supports up to twenty 7-segment alphanumeric characters, up to ten 14-segment alphanumeric characters, or any graphics of up to 160 elements
- Versatile blinking modes
- No external components required (even in multiple device applications)
- 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 voltage-follower buffers
- Auto-incremented display data loading across device subaddress boundaries
- Display memory bank switching in static and duplex drive modes
- Optimized pinning for plane wiring in both single and multiple PCA8576C applications
Applications
The PCA8576CH/Q900/1,1 is primarily used in automotive applications due to its AEC-Q100 compliance. It is suitable for various LCD display needs in vehicles, including instrument clusters, infotainment systems, and other automotive displays. Additionally, its low power consumption and cascading capability make it suitable for battery-operated devices and large LCD applications.
Q & A
- What is the PCA8576CH/Q900/1,1 used for? The PCA8576CH/Q900/1,1 is an automotive LCD driver used to interface with Liquid Crystal Displays (LCDs) in various automotive and other low-power applications.
- What types of LCDs does the PCA8576CH support? It supports static and multiplexed LCDs with up to four backplanes and up to 40 segments.
- How does the PCA8576CH communicate? It communicates via the two-line bidirectional I2C-bus.
- What is the power supply range for the PCA8576CH? The supply voltage ranges from 2 V for low-threshold LCDs to 6 V for guest-host LCDs and high-threshold twisted nematic LCDs.
- Is the PCA8576CH AEC-Q100 compliant? Yes, it is AEC-Q100 compliant for automotive applications.
- Can the PCA8576CH be cascaded? Yes, it can be cascaded for large LCD applications, supporting up to 2560 segments.
- What are the key features of the PCA8576CH? Key features include single-chip LCD controller and driver, versatile blinking modes, no external components required, and selectable backplane and display bias configurations.
- What is the package type of the PCA8576CH/Q900/1,1? The package type is LQFP64 (plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm).
- Does the PCA8576CH have a power-saving mode? Yes, it has a power-saving mode for extremely low power consumption in battery-operated applications.
- What is the display RAM capacity of the PCA8576CH? The device has 40 × 4-bit RAM for display data storage.
