Parallel Bus to I2C Bus Controller 20-Pin SO T/R

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:

• 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 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
• PCA9665A ‘glitch-free’ restart is suitable for use with buffer drivers
• ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Packages offered:
  • PCA9665: SO20, TSSOP20, HVQFN20
  • PCA9665A: TSSOP20