Overview
The PCA8546ATT/AJ is a highly integrated LCD driver IC manufactured by NXP USA Inc. This device is designed to generate drive signals for multiplexed LCDs, supporting up to four backplanes and 176 elements. It is particularly suited for automotive applications due to its AEC-Q100 grade 3 compliance. The PCA8546ATT/AJ communicates via a two-line bidirectional I2C-bus, making it compatible with most microcontrollers. It features on-chip RAM for display data storage, minimizing communication overheads through auto-incremented addressing.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | TSSOP56 (plastic, thin shrink small outline package) |
| Number of Leads | 56 |
| Lead Pitch | 0.5 mm |
| Package Dimensions | 14 mm x 6.1 mm x 1.2 mm |
| Interface | I2C-bus (PCA8546A) |
| Digital Power Supply Range | 1.8 V to 5.5 V |
| LCD Supply Range | 2.5 V to 9 V |
| Operating Temperature Range | -40°C to +95°C |
| Number of Segments Driven | Up to 176 elements |
| Frame Frequency Range | 60 Hz to 300 Hz (in steps of about 10 Hz) |
Key Features
- AEC-Q100 grade 3 compliant for automotive applications
- Single-chip 176 elements LCD controller and driver
- Wide range for digital power supply: from 1.8 V to 5.5 V
- LCD supply range from 2.5 V up to 9 V
- Low power consumption
- Four backplanes and selectable display bias configuration
- On-chip RAM for display data storage
- 400 kHz I2C-bus interface (PCA8546A)
- Programmable frame frequency in the range of 60 Hz to 300 Hz
- Extended operating temperature range up to 95°C
- Manufactured in silicon gate CMOS process
Applications
- Climate control systems
- Car radios
- Dashboard displays
Q & A
- What is the PCA8546ATT/AJ used for?
The PCA8546ATT/AJ is used as an LCD driver IC to generate drive signals for multiplexed LCDs in various automotive applications. - What package type does the PCA8546ATT/AJ come in?
The PCA8546ATT/AJ comes in a TSSOP56 package. - What is the operating temperature range of the PCA8546ATT/AJ?
The operating temperature range is from -40°C to +95°C. - How does the PCA8546ATT/AJ communicate with microcontrollers?
The PCA8546ATT/AJ communicates via a two-line bidirectional I2C-bus. - What is the range of the digital power supply for the PCA8546ATT/AJ?
The digital power supply range is from 1.8 V to 5.5 V. - What is the maximum number of segments the PCA8546ATT/AJ can drive?
The PCA8546ATT/AJ can drive up to 176 elements. - Is the PCA8546ATT/AJ AEC-Q100 compliant?
Yes, the PCA8546ATT/AJ is AEC-Q100 grade 3 compliant for automotive applications. - What are some common applications of the PCA8546ATT/AJ?
Common applications include climate control systems, car radios, and dashboard displays. - What is the frame frequency range of the PCA8546ATT/AJ?
The frame frequency range is from 60 Hz to 300 Hz in steps of about 10 Hz. - Does the PCA8546ATT/AJ have on-chip RAM for display data storage?
Yes, the PCA8546ATT/AJ has on-chip RAM for display data storage.
