Overview
The PCA9564N,112 is an integrated circuit designed by NXP USA Inc. to serve as an interface between standard parallel-bus microcontrollers/microprocessors and the serial I2C-bus. This CMOS technology-based IC enables bi-directional communication between the parallel bus system and the I2C-bus, making it a versatile component for various applications. It can operate as both a master and a slave, and it supports multi-master capability, making it suitable for complex system designs.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 20-DIP (0.300", 7.62mm) |
| Operating Supply Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40°C to 85°C |
| Interface | Parallel to I2C-bus |
| I2C Mode | Standard and fast mode, compatible with SMBus |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, and 1000 V CDM |
| Supply Current | 6 mA |
| I/O Voltage Tolerance | 5 V tolerant |
| Internal Oscillator | 9 MHz, requires up to 500 µs to start-up |
Key Features
- Parallel-bus to I2C-bus protocol converter and interface
- Both master and slave functions with multi-master capability
- Internal oscillator reduces external components
- Standard and fast mode I2C capable and compatible with SMBus
- ESD protection exceeds 2000 V HBM, 200 V MM, and 1000 V CDM
- 5 V tolerant I/Os
- Latch-up testing exceeds 100 mA according to JEDEC Standard JESD78
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
- Higher frequency, lower voltage migration path for the PCF8584
- Converts 8 bits of parallel data to serial data stream to prevent having to run a large number of traces across the entire PC board
Q & A
- What is the primary function of the PCA9564N,112?
The PCA9564N,112 serves as an interface between standard parallel-bus microcontrollers/microprocessors and the serial I2C-bus. - What are the operating supply voltage and temperature ranges for the PCA9564N,112?
The operating supply voltage is 2.3 V to 3.6 V, and the operating temperature range is -40°C to 85°C. - Can the PCA9564N,112 operate as both a master and a slave?
Yes, it can operate as both a master and a slave and supports multi-master capability. - What is the frequency of the internal oscillator in the PCA9564N,112?
The internal oscillator frequency is 9 MHz. - What kind of ESD protection does the PCA9564N,112 offer?
The PCA9564N,112 offers ESD protection that exceeds 2000 V HBM, 200 V MM, and 1000 V CDM. - Is the PCA9564N,112 compatible with SMBus?
Yes, it is compatible with SMBus and supports standard and fast mode I2C. - What is the purpose of the internal registers in the PCA9564N,112?
The internal registers are used to configure the operation of the device as well as to send and receive serial data. - Can the PCA9564N,112 be used to add multiple I2C-bus ports to a system?
Yes, it can be used to add additional I2C-bus ports to controllers/processors that need multiple I2C-bus ports. - How does the PCA9564N,112 handle data transfer between the parallel bus and the I2C-bus?
Data transfer is carried out on a byte-wise basis using either an interrupt or polled handshake. - What is the significance of the 5 V tolerant I/Os in the PCA9564N,112?
The 5 V tolerant I/Os allow the device to operate with input voltages up to 5 V, enhancing compatibility with various systems.
