DESCRIPTION

The PCA9564 is an integrated circuit designed in CMOS technology that serves as an interface between most standard parallel-bus microcontrollers/microprocessors and the serial I2C-bus and allows the parallel bus system to communicate bi-directionally with the I2C-bus. The PCA9564 can operate as a master or a slave and can be a transmitter or receiver. Communication with the I2C-bus is carried out on a byte-wise basis using interrupt or polled handshake.

The PCA9564 controls all the I2C-bus specific sequences, protocol, arbitration and timing with no external timing element required.

FEATURES

? Parallel-bus to I2C-bus protocol converter and interface

? Both master and slave functions

? Multi-master capability

? Internal oscillator reduces external components

? Operating supply voltage 2.3 V to 3.6 V

? 5 V tolerant I/Os

? Standard and fast mode I2C capable and compatible with SMBus

? ESD protection exceeds 2000 V HEM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101

? Latch-up testing is done to JEDEC Standard JESD78 which exceed 100 mA.

? Packages offered: DIP20, SO20, TSSOP20, HVQFN20

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