PCA9665PW,118
数据手册.pdf接口桥接器, 并行总线至I2C, 2.3 V, 3.6 V, TSSOP, 20 引脚, -40 °C
Overview
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
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## 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 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 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
## Target 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
## Features