The PT2256 is a remote control encoder commonly used in conjunction with the PT2272 decoder in various wireless remote control applications. It encodes address and data information, transforming it into a format suitable for transmission via radio frequency (RF) or infrared (IR) signals. The device is designed for low power consumption and reliable operation.

Applications:

• Wireless remote control systems for consumer electronics
• Security systems remote controls
• Remote control toys and hobby electronics
• Industrial remote control applications
• Garage door and gate openers

Features:

• Low power CMOS technology
• Multiple address and data pins for flexible configuration
• Built-in oscillator circuit requiring only an external resistor
• Transmission enable pin for power saving
• Compatible with the PT2272 series of decoders

Benefits:

• Extended battery life in remote control devices
• Simplified circuit design due to minimal external components
• Secure communication through address encoding
• Cost-effective solution for remote control applications
• Easy integration into existing systems

Additional Details:

The PT2256 operates within a supply voltage range that typically extends from 3V to 15V. The oscillator frequency is determined by an external resistor value. The address and data inputs are usually configured using DIP switches or wire connections. When the transmission enable pin is activated, the encoded signal is transmitted. It’s important to choose the correct resistor value for the oscillator to ensure reliable communication between the encoder and the decoder. The encoded signal is generally transmitted using Amplitude Shift Keying (ASK) modulation. The PT2256 is often employed in scenarios where a simple, one-way remote control system is required.

Properly selecting components and following the manufacturer’s guidelines will ensure successful implementation of the PT2256 in a remote control system. Understanding the timing requirements and address/data configuration is also crucial.