PCA9665

General description

The PCA9665 serves as an interface between most standard parallel-bus microcontrollers/microprocessors and the serial I²C-bus and allows the parallel bus system to communicate bidirectionally with the I²C-bus. The PCA9665 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 or Buffered mode using interrupt or polled handshake. The PCA9665 controls all the I²C-bus specific sequences, protocol, arbitration and timing with no external timing element required.

The PCA9665 has the same footprint as the PCA9564 with additional features:

• 1 MHz transmission speeds
• Up to 25 mA drive capability on SCL/SDA
• 68-byte buffer
• I²C-bus General Call
• Software reset on the parallel bus

Features

• Parallel-bus to I²C-bus protocol converter and interface
• Both master and slave functions
• Multi-master capability
• Internal oscillator trimmed to 15 pct accuracy reduces external components
• 1 Mbit/s and up to 25 mA SCL/SDA I_OL (Fast-mode Plus (Fm+)) capability
• I²C-bus General Call capability
• Software reset on parallel bus
• 68-byte data buffer
• Operating supply voltage: 2.3 V to 3.6 V
• 5 V tolerant I/Os
• Standard-mode and Fast-mode I²C-bus capable and compatible with SMBus
• ESD protection exceeds 2000 V HBM 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 exceeds 100 mA
• Packages offered: DIP20, SO20, TSSOP20, HVQFN20

Products/packages

Pricing/ordering/availability

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
• Converts 8 bits of parallel data to serial data stream to prevent having to run a large number of traces across the entire printed-circuit board

Block diagrams/pinning

Design support

Application Notes

AN10441_1; Level shifting techniques in I2C-bus design (2007-06-20)

Support Documents

UM10206_1; I2C Demonstration Board 2005-1 Quick Start Guide (2006-06-13)

UM10204_3; I2C-bus specification and user manual (2007-06-26)

web; IBIS and HSPICE Model ()

75015687; NXP Fast-mode Plus parallel bus to I²C-bus controller PCA9665 (2006-10-01)

Parametrics/similar products

Similar products
PCA9665 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

Print / Email

• Print this information
• Email this information

Disclaimer

The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.

The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.

As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.

http://www.philips.semiconductors.com use http://www.nxp.com

http://www.semiconductors.philips.com use http://www.nxp.com (Internet)

sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)

The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-

If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.