PCA9564D,112

Controllers Overview

The PCA9564D,112 is a parallel bus to I2C-bus controller manufactured by NXP USA Inc. It operates within a supply voltage range of 2.3 V to 3.6 V and draws a supply current of 6 mA. The device supports standard and fast mode I2C communication with maximum frequencies of 360 kHz in master mode and 400 kHz in slave mode. It features 5 V tolerant I/Os and includes an internal oscillator. The component is housed in a 20-SOIC package and functions across a temperature range of -40°C to +85°C.

Controllers Feature Summary

• Parallel-bus to I2C-bus protocol converter and interface
• Both master and slave functions
• Multi-master capability
• Internal oscillator reduces external components

Controllers Applications

• Add I2C-bus port to controllers/processors that do not have one
• Add additional I2C-bus ports to controllers/processors that need multiple I2C-bus ports
• Higher frequency, lower voltage migration path for the PCF8584
• Converts 8 bits of parallel data to serial data stream to prevent having to run a large number of traces across the entire PC board

Controllers Procurement Notes

Verify the specific ordering code PCA9564D,112 against official NXP documentation to confirm package type and temperature range. Ensure compatibility with system voltage requirements of 2.3 V to 3.6 V. Check for end-of-life status or alternative packages if availability is constrained. Confirm pinout alignment with existing PCB layouts for the SO20 variant.

Controllers Selection Notes

Select this component when interfacing standard parallel bus microcontrollers with I2C devices. It is suitable for systems requiring bidirectional communication without external timing elements. Consider the 5 V tolerant I/Os for mixed-voltage environments. Evaluate the internal oscillator benefits against potential frequency variations due to temperature and process conditions.

Controllers Part Context

The PCA9564 series serves as an interface between parallel bus microcontrollers and the I2C bus. It allows parallel bus systems to communicate bi-directionally with I2C devices. The device controls all I2C-specific sequences, protocol, arbitration, and timing. It is similar to the PCF8584 but operates at lower voltages and higher frequencies.

Controllers Replacement Considerations

PCF8584 is noted as a predecessor but is not footprint compatible. No direct public substitute part numbers are confirmed in the provided datasheet.