Overview
The PCA85276ATT/AJ is a peripheral device designed by NXP USA Inc. to interface with a wide range of Liquid Crystal Displays (LCDs) with low multiplex rates. This IC is particularly suited for automotive applications, offering a comprehensive set of features to drive static or multiplexed LCDs efficiently. It is compatible with most microcontrollers and communicates via a two-line bidirectional I2C-bus, minimizing communication overheads through its display RAM with auto-incremented addressing and hardware subaddressing.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | NXP USA Inc. |
| Package/Case | 56-TFSOP (0.240, 6.10mm Width) |
| Interface | I2C |
| Pin Count | 56 |
| Supply Voltage | 1.8 V to 5.5 V |
| LCD Supply Voltage | 2.5 V to 8.0 V |
| Supply Current | 6 μA |
| Operating Temperature | Up to 105 °C |
| ROHS Status | ROHS3 Compliant |
| Mounting Type | Surface Mount |
Key Features
- AEC-Q100 grade 2 compliant for automotive applications
- Single chip LCD controller and driver
- 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
- 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
- 400 kHz I2C-bus interface
- No external components required
Applications
The PCA85276ATT/AJ is primarily used in automotive applications to drive LCD displays. It is suitable for a variety of display configurations, including numeric, alphanumeric, and graphic displays. Its compatibility with low multiplex rates and various display bias configurations makes it versatile for different types of LCDs. Additionally, it can be used in other applications requiring efficient LCD control, such as industrial control panels, medical devices, and consumer electronics.
Q & A
- What is the PCA85276ATT/AJ used for?
The PCA85276ATT/AJ is used as a peripheral device to interface with and drive Liquid Crystal Displays (LCDs) in various applications, particularly in the automotive sector.
- What is the package type of the PCA85276ATT/AJ?
The PCA85276ATT/AJ comes in a 56-TFSOP package with a width of 0.240 and 6.10mm.
- What interface does the PCA85276ATT/AJ use for communication?
The PCA85276ATT/AJ communicates via a two-line bidirectional I2C-bus.
- What is the supply voltage range for the PCA85276ATT/AJ?
The supply voltage range for the PCA85276ATT/AJ is from 1.8 V to 5.5 V.
- What is the maximum operating temperature of the PCA85276ATT/AJ?
The PCA85276ATT/AJ can operate up to a temperature of 105 °C.
- Is the PCA85276ATT/AJ ROHS compliant?
Yes, the PCA85276ATT/AJ is ROHS3 compliant.
- How many segment drives does the PCA85276ATT/AJ support?
The PCA85276ATT/AJ supports up to 40 segment drives.
- Can the PCA85276ATT/AJ be cascaded for larger LCD applications?
Yes, the PCA85276ATT/AJ can be cascaded for larger LCD applications, supporting up to 1280 segments/elements.
- Does the PCA85276ATT/AJ require external components for operation?
No, the PCA85276ATT/AJ does not require external components for operation.
- What types of LCDs can the PCA85276ATT/AJ drive?
The PCA85276ATT/AJ can drive static or multiplexed LCDs containing up to four backplanes and up to 40 segments.
