PCU9661B,118

Controllers Overview

The PCU9661B,118 is a parallel-bus to I2C-bus protocol converter manufactured by NXP Semiconductors. It functions as an advanced single master mode controller supporting Ultra Fast-mode (UFm) with a transmit rate up to 5 Mbit/s using push-pull topology. The device features a 4352-byte data buffer and communicates with up to 64 slaves in one sequence. Operating supply voltage ranges from 3.0 V to 3.6 V, while the I2C-bus I/O supply voltage supports 3.0 V to 5.5 V. It is housed in an LQFP-48 package.

Controllers Feature Summary

• Converts 8-bit parallel bus data to serial UFm I2C-bus streams
• Includes internal oscillator trimmed to 1% accuracy
• Supports sequence looping with interval timer
• Features trigger input for external event synchronization

Controllers Applications

• Adding UFm I2C-bus ports to controllers lacking native support
• LED matrix control systems
• Entertainment systems requiring data intensive transfers

Controllers Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance and lead-free soldering specifications before integration. Check moisture sensitivity level ratings against storage conditions. Validate package dimensions against PCB footprint requirements.

Controllers Selection Notes

Select this component when interfacing parallel hosts with high-speed serial I2C devices. Ensure host logic levels match the 3.3 V interface requirement. Verify that the target application fits within the 4352-byte buffer capacity. Confirm compatibility with the LQFP48 package constraints.

Controllers Part Context

This part belongs to the PCU series of universal bus functions designed for protocol conversion. It serves as a bridge between legacy parallel interfaces and modern serial communication standards. The device simplifies system design by offloading I2C transaction management from the main CPU.

Controllers Replacement Considerations

No direct public substitute part numbers are confirmed for this specific discontinued model.