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PCA9564 Datasheet(PDF) 2 Page - NXP Semiconductors |
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PCA9564 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 31 page Philips Semiconductors Product data PCA9564 Parallel bus to I2C-bus controller 2 2003 Apr 02 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: SO20, TSSOP20, HVQFN20 APPLICATIONS • Add I2C bus port to controllers/processors that don’t 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 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. The PCA9564 is similar to the PCF8584 but operates at lower voltages and higher I @C frequencies. Other enhancements requested by design engineers have also been incorporated. Characteristic PCA9564 PCF8584 Comments Voltage range 2.3-3.6 V 4.5-5.5 V PCA9564 is 5 V tolerant Maximum master mode I2C frequency 360 kHz 90 kHz Faster I2C interface Maximum slave mode I2C frequency 400 kHz 100 kHz Faster I2C interface Clock source Internal External Less expensive and more flexible with internal oscillator Parallel interface Fast 50 MHz Slow Compatible with faster processors While the PCF8584 supported most parallel-bus microcontrollers/ microprocessors including the Intel 8049/8051, Motorola 6800/68000 and the Zilog Z80, the PCA9564 has been designed to be very similar to the Philips standard 80C51 microcontroller I2C hardware so the devices are not code compatible. Additionally, the PCA9564 does not support the bus monitor “Snoop” mode nor the long distance mode and is not foot print compatible with the PCF8584. ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DRAWING NUMBER 20-Pin Plastic SO -40 to +85 °C PCA9564D PCA9564D SOT163-1 20-Pin Plastic TSSOP -40 to +85 °C PCA9564PW PCA9564 SOT360-1 20-Pin Plastic HVQFN -40 to +85 °C PCA9564BS 9564 SOT662-1 Standard packing quantities and other packaging data are available at www.philipslogic.com/packaging. |
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