PCA9665A

PCA9665; PCA9665A Fm+ parallel bus to I2C-bus controller Rev. 4 — 29 September 2011 Product data sheet 1. General description The PCA9665/PCA9665A 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/PCA9665A 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/PCA9665A controls all the I2C-bus specific sequences, protocol, arbitration and timing with no external timing element required. The PCA9665 and PCA9665A have 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 2. Features and benefits  Parallel-bus to I2C-bus protocol converter and interface  Both master and slave functions  Multi-master capability  Internal oscillator trimmed to 15 % accuracy reduces external components  1 Mbit/s and up to 25 mA SCL/SDA IOL (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  PCA9665A ‘glitch-free’ restart is suitable for use wi...