Overview
The PCF8577CT/3,118 is an LCD driver manufactured by NXP USA Inc. This component is designed to drive up to 32 segments directly or 64 segments in a duplex configuration. It features a two-line I²C-bus interface, which significantly reduces wiring overheads in remote display applications. The I²C-bus interface also minimizes traffic in multiple IC applications through automatic address incrementing, hardware subaddressing, and display memory switching in direct drive mode.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage (VDD) | 2.5 | 6 | V | ||
| Supply Current (IDD) | -50 | 50 | mA | ||
| LCD Supply Current (IDD(LCD)) | -50 | 50 | mA | ||
| Total Power Dissipation (Ptot) | 500 | mW | |||
| Output Power (Po) | 100 | mW | |||
| Electrostatic Discharge Voltage (VESD) HBM | ±2000 | V | |||
| Electrostatic Discharge Voltage (VESD) MM | ±200 | V | |||
| Storage Temperature (Tstg) | -65 | 150 | °C | ||
| Ambient Temperature (Tamb) | -40 | 85 | °C | ||
| SCL Clock Frequency (fSCL) | 100 | kHz | |||
| Display Frequency (fLCD) | ROSC = 1 MΩ; COSC = 680 pF | 65 | 90 | 120 | Hz |
Key Features
- Direct and duplex drive modes with up to 32/64 LCD-segment drive capability per device.
- Operating supply voltage range: 2.5 V to 6 V.
- Low power consumption.
- I²C-bus interface for reduced wiring overhead and minimized I²C-bus traffic in multiple IC applications.
- Optimized pinning for single plane wiring.
- Single-pin built-in oscillator.
- Auto-incremented loading across device subaddress boundaries.
- Display memory switching in direct drive mode.
- May be used as I²C-bus output expander.
- System expansion up to 256 segments.
- Power-on reset blanks display.
- I²C-bus address: 0111 0100.
Applications
- Remote display applications where reduced wiring overhead is crucial.
- Multi-IC applications requiring minimized I²C-bus traffic.
- Various LCD display systems needing direct or duplex drive configurations.
- Embedded systems and microcontroller-based projects requiring efficient LCD control.
Q & A
- What is the PCF8577CT/3,118 used for?
The PCF8577CT/3,118 is used as an LCD driver to drive up to 32 segments directly or 64 segments in a duplex configuration.
- What is the operating supply voltage range of the PCF8577CT/3,118?
The operating supply voltage range is 2.5 V to 6 V.
- What interface does the PCF8577CT/3,118 use?
The PCF8577CT/3,118 uses a two-line I²C-bus interface.
- What are the key features of the I²C-bus interface in the PCF8577CT/3,118?
The I²C-bus interface minimizes traffic through automatic address incrementing, hardware subaddressing, and display memory switching.
- Can the PCF8577CT/3,118 be used as an I²C-bus output expander?
Yes, the PCF8577CT/3,118 can be used as an I²C-bus output expander.
- What is the maximum number of segments that can be driven in a system using multiple PCF8577CT/3,118 devices?
The system can expand up to 256 segments using multiple devices.
- What is the I²C-bus address of the PCF8577CT/3,118?
The I²C-bus address is 0111 0100.
- What is the storage temperature range for the PCF8577CT/3,118?
The storage temperature range is -65°C to 150°C.
- What is the ambient operating temperature range for the PCF8577CT/3,118?
The ambient operating temperature range is -40°C to 85°C.
- What is the maximum SCL clock frequency for the PCF8577CT/3,118?
The maximum SCL clock frequency is 100 kHz.
- What is the typical display frequency of the PCF8577CT/3,118?
The typical display frequency is 90 Hz, with a range of 65 Hz to 120 Hz.
