IP82C55A-5 datasheet by Harris Semiconductor

IP82C55A-5 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that the IP82C55A-5 can operate at?
  The IP82C55A-5 can operate at a maximum clock frequency of 5 MHz.
• How do I handle the interrupt priority in the IP82C55A-5?
  The IP82C55A-5 has a fixed priority interrupt structure, where the interrupt request lines (IR0-IR7) have a fixed priority level. IR0 has the highest priority, and IR7 has the lowest priority. The interrupt priority can be handled by using the Interrupt Mask Register (IMR) to mask or unmask specific interrupt requests.
• Can I use the IP82C55A-5 as a general-purpose I/O port?
  Yes, the IP82C55A-5 can be used as a general-purpose I/O port. The device has 24 I/O lines that can be configured as inputs or outputs, and can be used for various applications such as keyboard interfaces, LED displays, and peripheral interfaces.
• How do I reset the IP82C55A-5?
  The IP82C55A-5 can be reset by asserting the Reset (RESET) input low for a minimum of 10 ns. This will reset the device and clear all internal registers and counters.
• What is the power consumption of the IP82C55A-5?
  The power consumption of the IP82C55A-5 depends on the operating frequency and the load on the I/O lines. According to the datasheet, the typical power consumption is around 100 mW at 5 MHz and 5V supply voltage.