8-bit I<sup>2</sup>C and SMBus I/O port with 2-kbit EEPROM - # of Addresses: 8 ; I2C-bus: 400 kHz; Max Sink Current per bit: 25 mA; Max Sink Current, per package: 100 mA; Memory size: 2 kBits; Number of bits: 8 ; Operating temperature: -40~85 Cel; Operating voltage: 2.5~3.6 VDC; Source Current per bit: 0.1 mA; Weak Pull-Up Current Source: yes; Package: SOT162-1 (SO16); Container: Tube
The maximum frequency of operation for PCA9500D,112 is 400 kHz, as per the datasheet. However, it's recommended to operate at a lower frequency (e.g., 100 kHz) for reliable operation and to minimize power consumption.
To ensure reliable communication, make sure to follow the recommended PCB layout guidelines, use a proper clock signal, and implement error detection and correction mechanisms in your firmware. Additionally, ensure that the voltage levels and signal integrity meet the requirements specified in the datasheet.
Yes, the PCA9500D,112 is compatible with 3.3V microcontrollers. The device operates from a 2.3V to 5.5V supply voltage, making it suitable for use with 3.3V microcontrollers. However, ensure that the voltage levels and signal integrity meet the requirements specified in the datasheet.
To handle bus contention and arbitration, implement a proper arbitration mechanism in your firmware, such as using a unique address for each master device or implementing a token-passing protocol. Additionally, ensure that each master device has a unique address and follows the I2C bus protocol specifications.
The maximum cable length supported by the PCA9500D,112 depends on the specific application and the characteristics of the cable. As a general guideline, the datasheet recommends a maximum cable length of 10 meters for a 400 kHz I2C bus. However, this can be extended up to 30 meters or more with proper cable selection and termination.
PCA9500D,112 datasheet
by NXP Semiconductors
