Overview
The PCA9665PW,112, manufactured by NXP USA Inc., is a versatile interface controller that bridges the gap between standard parallel-bus microcontrollers/microprocessors and the serial I2C-bus. This device enables bidirectional communication between the parallel bus system and the I2C-bus, making it an essential component in various embedded systems and applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP20 |
| Operating Supply Voltage | 2.3 V to 3.6 V |
| I2C-bus Modes | Standard-mode, Fast-mode, and Fast-mode Plus (Fm+) |
| I2C-bus Speed | Up to 1 Mbit/s |
| SCL/SDA Drive Capability | Up to 25 mA |
| I/O Tolerance | 5 V tolerant I/Os |
| Operating Temperature | -40°C to 85°C |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Latch-up Testing | Exceeds 100 mA per JEDEC Standard JESD78 |
| Data Buffer Size | 68 bytes |
Key Features
- Both master and slave I2C-bus functions with multi-master capability
- Internal oscillator trimmed to 15% accuracy, reducing the need for external timing elements
- Software reset on parallel bus and 'glitch-free' restart for PCA9665A
- I2C-bus General Call capability and compatibility with SMBus
- Eleven configurable registers for device operation and data transfer
- Four direct and seven indirect registers accessible via register pointer
Applications
- Embedded systems requiring communication between parallel-bus microcontrollers/microprocessors and I2C-bus devices
- Industrial automation and control systems
- Automotive electronics and in-vehicle networks
- Consumer electronics and appliances
- Medical devices and healthcare equipment
Q & A
- What is the primary function of the PCA9665PW,112?
The PCA9665PW,112 acts as an interface controller between standard parallel-bus microcontrollers/microprocessors and the serial I2C-bus, enabling bidirectional communication.
- What are the supported I2C-bus modes?
The device supports Standard-mode, Fast-mode, and Fast-mode Plus (Fm+).
- What is the maximum I2C-bus speed supported by the PCA9665PW,112?
The device supports up to 1 Mbit/s I2C-bus speed.
- What is the operating supply voltage range for the PCA9665PW,112?
The operating supply voltage range is 2.3 V to 3.6 V.
- Does the PCA9665PW,112 have ESD protection?
- What is the data buffer size of the PCA9665PW,112?
The data buffer size is 68 bytes.
- Can the PCA9665PW,112 operate in both master and slave modes?
- What types of packages are available for the PCA9665?
The PCA9665 is available in SO20, TSSOP20, and HVQFN20 packages.
- Does the PCA9665PW,112 have internal oscillator trimming?
- Is the PCA9665PW,112 compatible with SMBus?
