HT48R05A-1 - Holtek

HT48R05A-1 Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with the HT48R05A-1?
  The maximum clock frequency for the HT48R05A-1 is 4 MHz, but it can be operated at a lower frequency to reduce power consumption.
• How do I configure the oscillator circuit for the HT48R05A-1?
  The oscillator circuit for the HT48R05A-1 requires a crystal oscillator with a frequency of 4 MHz, and the internal oscillator capacitor should be connected between the OSC1 and OSC2 pins.
• What is the purpose of the RST pin on the HT48R05A-1?
  The RST pin is an active-low reset input that can be used to reset the microcontroller. It can be connected to a reset button or a voltage supervisor IC to implement a power-on reset function.
• How do I use the watchdog timer on the HT48R05A-1?
  The watchdog timer on the HT48R05A-1 can be enabled by setting the WDTE bit in the WDTC register. The watchdog timer period can be set to 16 ms, 32 ms, or 64 ms by configuring the WDTPS bits in the WDTC register.
• What is the maximum current that can be sourced or sunk by the I/O pins on the HT48R05A-1?
  The maximum current that can be sourced or sunk by the I/O pins on the HT48R05A-1 is 20 mA, but the total current sourced or sunk by all I/O pins should not exceed 100 mA.