Description

The PCF8577CT is a single chip, silicon gate CMOS circuit. It is designed to drive liquid crystal displays with up to 32 segments directly, or 64 segments in a duplex configuration. It operates at a supply voltage of 2.5 to 6 V and has low power consumption. The PCF8577CT has an I2C-bus interface and optimized pinning for single plane wiring. It also features a single-pin built-in oscillator and auto-incremented loading across device subaddress boundaries. Additionally, it can be used as an I2C-bus output expander, allowing for system expansion up to 256 segments. The PCF8577CT has a power-on reset function that blanks the display and its I2C-bus address is 0111 0100.

Specifications and features

- Direct/duplex drive modes with up to 32/64 LCD-segment drive capability per device
- Operating supply voltage: 2.5 to 6 V
- Low power consumption
- I2C-bus interface
- 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

Application Scenarios

The PCF8577CT is primarily used for driving liquid crystal displays with up to 32 segments directly, or 64 segments in a duplex configuration. It is suitable for use in various applications where an I2C-bus interface is required, such as consumer electronics, medical devices, and industrial equipment.

Comparison

- Direct and duplex drive modes with up to 32/64 LCD-segment drive capability per device
- Optimized pinning for single plane wiring
- Auto-incremented loading across device subaddress boundaries
- Can be used as an I2C-bus output expander
- System expansion up to 256 segments

- Limited operating supply voltage range (2.5 to 6 V)