Overview
The PCF8533U/2/F2,028 is a universal 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), including static and multiplexed displays. It generates the necessary drive signals for LCDs with up to four backplanes and up to 80 segments, making it versatile for various display configurations. The device communicates via a two-line bidirectional I2C-bus, minimizing communication overheads through features like display RAM with auto-incremental addressing and hardware subaddressing.
Key Specifications
| Specification | Details |
|---|---|
| Package | Bare die, 99 bumps; 5.28 x 1.4 x 0.38 mm |
| Segment Outputs | Up to 80 segments |
| Backplane Drive Configuration | Static, 2, 3, or 4 backplane multiplexing |
| Display Bias Configuration | Static, 1/2, or 1/3 |
| Internal LCD Bias Generation | Voltage follower buffers |
| Display Data Storage | 80 x 4 bit RAM |
| Power Supply Range | 1.8 V to 5.5 V (logic), 2.5 V to 6.5 V (LCD) |
| I2C-bus Interface | 400 kHz |
| Cascading Capability | Up to 5120 elements possible |
| Compatibility | Chip-On-Glass (COG) technology, most microcontrollers |
Key Features
- 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
- 80 segment outputs allowing to drive: 40 7-segment alphanumeric characters, 20 14-segment alphanumeric characters, or any graphics of up to 320 elements
- Auto-incremental 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
- No external components required
- Manufactured using silicon gate CMOS process
Applications
The PCF8533U/2/F2,028 is suitable for a wide range of applications that require LCD displays, including:
- Industrial control panels
- Medical devices
- Consumer electronics
- Automotive displays
- Any system requiring static or multiplexed LCD displays
Q & A
- What is the PCF8533U/2/F2,028 used for? The PCF8533U/2/F2,028 is used as a universal LCD driver for low multiplex rates, interfacing with various LCD displays.
- How many segment outputs does the PCF8533U/2/F2,028 have? The device has up to 80 segment outputs.
- What are the power supply ranges for the PCF8533U/2/F2,028? The logic voltage range is from 1.8 V to 5.5 V, and the LCD supply range is from 2.5 V to 6.5 V.
- Can the PCF8533U/2/F2,028 be cascaded for larger LCD applications? Yes, it can be cascaded for large LCD applications, supporting up to 5120 elements.
- What communication interface does the PCF8533U/2/F2,028 use? The device communicates via a 400 kHz two-line bidirectional I2C-bus.
- Is the PCF8533U/2/F2,028 compatible with Chip-On-Glass (COG) technology? Yes, it is compatible with COG technology.
- What is the manufacturing process of the PCF8533U/2/F2,028? It is manufactured using silicon gate CMOS process.
- Does the PCF8533U/2/F2,028 require external components? No, it does not require external components.
- What types of displays can the PCF8533U/2/F2,028 drive? It can drive static or multiplexed LCDs with up to four backplanes and up to 80 segments.
- How does the PCF8533U/2/F2,028 support blinking modes? The device supports versatile blinking modes, including the ability to disable the display for external control of blinking.
