PCF8593P,112 datasheet by NXP Semiconductors

PCF8593P,112 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the analog-to-digital converter (ADC) in PCF8593P?
  The maximum frequency of the ADC in PCF8593P is 40 kHz. However, it's recommended to operate at a frequency below 20 kHz to ensure accurate conversions.
• How do I configure the PCF8593P for 4-channel or 8-channel mode?
  The PCF8593P is configured for 4-channel mode by default. To configure it for 8-channel mode, you need to set the A0 and A1 pins to logic high. For 4-channel mode, set A0 to logic low and A1 to logic high.
• What is the purpose of the internal oscillator in PCF8593P?
  The internal oscillator in PCF8593P is used to generate the clock signal for the ADC. It can be used as a default clock source, but it's recommended to use an external clock source for better accuracy and stability.
• Can I use the PCF8593P with a 5V power supply?
  The PCF8593P is designed to operate with a 2.5V to 3.6V power supply. While it may work with a 5V power supply, it's not recommended as it may exceed the maximum rating and cause damage to the device.
• How do I handle the output data from the PCF8593P?
  The PCF8593P outputs 8-bit digital data. You need to shift the data right by 2 bits to get the actual 6-bit ADC output value. The output data is in straight binary format, with 0x00 representing 0V and 0x3F representing the maximum voltage (VCC).