Overview
The PCF8551ATT/AJ, manufactured by NXP USA Inc., is an ultra low-power LCD segment driver designed to control and drive LCD displays. This component integrates a single chip LCD controller and driver, making it highly versatile for various applications. It features either an I2C (PCF8551A) or an SPI-bus (PCF8551B) interface, allowing for flexible communication protocols. The device operates within a temperature range of -40 °C to 85 °C, ensuring reliability in diverse environmental conditions.
Key Specifications
| Parameter | Description |
|---|---|
| Package | TSSOP48 (Thin Shrink Small Outline Package, 48 leads, 6.1 mm body width) |
| Interface | I2C (PCF8551A) or SPI-bus (PCF8551B) |
| Backplane Drivers | 4 backplane drivers |
| Segment Drivers | 36 segment drivers |
| Display Configuration | Selectable backplane drive: static, 2, 3, or 4 backplane multiplexing; Selectable display bias: static, 1/2, or 1/3 |
| Power Supply | 1.8 V to 5.5 V for VDD and VLCD |
| Operating Temperature | -40 °C to 85 °C |
| RoHS Status | ROHS3 Compliant |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
Key Features
- Single chip LCD controller and driver with internal oscillator, bias generation, instruction decoding, and display controller
- Ultra low-power consumption
- Internal LCD bias generation with buffers
- Supports up to 18 7-segment numeric characters, up to 9 14-segment alphanumeric characters, or any graphics of up to 144 segments/elements
- Auto-incrementing display data and instruction loading
- Versatile blinking modes
- Independent supplies of VDD and VLCD
- 400 kHz I2C-bus interface (PCF8551A) or 5 MHz SPI-bus interface (PCF8551B)
Applications
- Metering equipment
- Consumer healthcare devices
- Battery operated devices
- Measuring equipment
Q & A
- What is the PCF8551ATT/AJ used for? The PCF8551ATT/AJ is used as an LCD segment driver to control and drive LCD displays in various applications.
- What are the interface options for the PCF8551ATT/AJ? The PCF8551ATT/AJ offers either an I2C (PCF8551A) or an SPI-bus (PCF8551B) interface.
- What is the operating temperature range of the PCF8551ATT/AJ? The operating temperature range is -40 °C to 85 °C.
- What types of displays can the PCF8551ATT/AJ support? It can support up to 18 7-segment numeric characters, up to 9 14-segment alphanumeric characters, or any graphics of up to 144 segments/elements.
- What is the power supply range for the PCF8551ATT/AJ? The power supply range is 1.8 V to 5.5 V for both VDD and VLCD.
- Is the PCF8551ATT/AJ RoHS compliant? Yes, the PCF8551ATT/AJ is ROHS3 compliant.
- What is the package type of the PCF8551ATT/AJ? The package type is TSSOP48 (Thin Shrink Small Outline Package, 48 leads, 6.1 mm body width).
- What are some common applications of the PCF8551ATT/AJ? Common applications include metering equipment, consumer healthcare devices, battery operated devices, and measuring equipment.
- Does the PCF8551ATT/AJ have internal bias generation? Yes, it has internal LCD bias generation with buffers.
- What are the communication interface speeds for the PCF8551ATT/AJ? The I2C interface operates at 400 kHz, and the SPI interface operates at 5 MHz.
