Documentation
Quick reference to our documentation types.
1-5 of 12 documents
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Data Sheet
Fm+ parallel bus to I2C-bus controller
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User Guide
I2C-bus specification and user manual
Fm+ Parallel Bus to I²C-Bus Controller
PCA9665_PCA9665A Receive alerts
The PCA9665/PCA9665A serves as an interface between many 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 leader or a follower 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
Product Details
Block Diagram
Choose a diagram:
Features
Key Features
- Parallel-bus to I2C-bus protocol converter and interface
- Both leader and follower functions
- Multi-leader 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
- 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
Operating Supply Voltage
- 2.3 V to 3.6 V
ESD Protection
- Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
Latch-Up Testing
- Done to JEDEC Standard JESD78, which exceeds 100 mA
Packages
- PCA9665: SO20, TSSOP20, HVQFN20
- PCA9665A: TSSOP20
Design Resources
Design Files
2 design files
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Symbols and Footprints
PCA9665PW-TSSOP20-CAD Symbol and PCB Footprint – BXL File
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Symbols and Footprints
PCA9665APW-TSSOP20-CAD Symbol and PCB Footprint – BXL File
Hardware
1 hardware offering
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Evaluation and Development BoardsI²C Fm+ Development Board
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
2 engineering services
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Independent Design House (IDH)
Embedded Software Design
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Independent Design House (IDH)
Hardware Design Services
To find a complete list of our partners that support this product, please see our Partner Marketplace.