Overview
The PCF8566T/1,118, manufactured by NXP USA Inc., is a versatile peripheral device designed to interface with a wide variety of Liquid Crystal Displays (LCDs) that operate at low multiplex rates. This IC is capable of generating the drive signals for both static and multiplexed LCDs, making it highly adaptable for various display configurations. It is compatible with most microprocessors and microcontrollers and communicates via a two-line bidirectional I2C-bus, minimizing communication overheads.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 40-lead Very Small Outline Package (VSO40; SOT158-1) |
| Number of Segment Drives | Up to 24 segments |
| Display Configurations | Up to twelve 7-segment numeric characters, up to six 14-segment alphanumeric characters, or any graphics of up to 96 elements |
| Backplane Drive Configuration | Static or 2, 3, or 4 backplane multiplexing |
| Display Bias Configuration | Static, 1⁄2 or 1⁄3 |
| Power Supply Range | 2.5 V to 6 V |
| Communication Interface | Two-line bidirectional I2C-bus |
| Compatibility | TTL and CMOS compatible; compatible with any 4, 8, or 16-bit microprocessor or microcontroller |
| Power Consumption | Low power consumption with a power-saving mode for battery-operated applications |
Key Features
- Single-chip LCD controller/driver capable of driving up to 24 segments.
- Versatile blinking modes.
- No external components required, even in multiple device applications.
- Internal LCD bias generation with voltage-follower buffers.
- 24 × 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.
- Optimized pinning for plane wiring in both single and multiple PCF8566 applications.
- Cascadable for large LCD applications (up to 1536 segments possible).
Applications
The PCF8566T/1,118 is suitable for a wide range of applications, including:
- Battery-operated devices and telephones due to its low power consumption and power-saving mode.
- Various industrial and consumer electronics that require LCD displays, such as meters, calculators, and other portable devices.
- Larger LCD applications where multiple devices can be cascaded.
Q & A
- What is the PCF8566T/1,118 used for? The PCF8566T/1,118 is used as a peripheral device to interface with Liquid Crystal Displays (LCDs) and generate the necessary drive signals.
- What types of LCDs can the PCF8566T/1,118 drive? It can drive both static and multiplexed LCDs with up to four backplanes and up to 24 segments.
- What communication interface does the PCF8566T/1,118 use? It uses a two-line bidirectional I2C-bus for communication.
- What is the power supply range for the PCF8566T/1,118? The power supply range is from 2.5 V to 6 V.
- Is the PCF8566T/1,118 compatible with various microprocessors? Yes, it is compatible with any 4, 8, or 16-bit microprocessor or microcontroller.
- Can the PCF8566T/1,118 be cascaded for larger LCD applications? Yes, it can be cascaded for larger LCD applications, supporting up to 1536 segments.
- What are the key features of the PCF8566T/1,118's display capabilities? It supports versatile blinking modes, internal LCD bias generation, and auto-incremented display data loading.
- What is the package type of the PCF8566T/1,118? It comes in a 40-lead Very Small Outline Package (VSO40; SOT158-1).
- Does the PCF8566T/1,118 require external components? No, it does not require external components, even in multiple device applications.
- What are some common applications of the PCF8566T/1,118? It is commonly used in battery-operated devices, telephones, and various industrial and consumer electronics requiring LCD displays.
