MC68HC908AP64CB datasheet by Freescale Semiconductor

MC68HC908AP64CB Frequently Asked Questions (FAQs)

• What is the maximum clock frequency that can be used with this microcontroller?
  The maximum clock frequency for the MC68HC908AP64CB is 20 MHz, but it can be overclocked to 24 MHz with some limitations.
• How do I configure the internal oscillator to get the desired clock frequency?
  The internal oscillator can be configured using the OSCCLK and OSCEN bits in the Option Register (OPTION_REG) to select the desired clock frequency. Refer to the datasheet for the specific configuration options.
• What is the maximum current consumption of this microcontroller?
  The maximum current consumption of the MC68HC908AP64CB is around 25 mA at 20 MHz with all peripherals enabled, but this can vary depending on the specific application and operating conditions.
• How do I use the built-in ADC module?
  The ADC module can be used by configuring the ADC control register (ADCCON) to select the desired channel, conversion mode, and clock source. The ADC result can be read from the ADC result register (ADCRES). Refer to the datasheet for the specific configuration and conversion sequence.
• Can I use the MC68HC908AP64CB with an external crystal oscillator?
  Yes, the MC68HC908AP64CB can be used with an external crystal oscillator. The external oscillator can be connected to the XTAL and EXTAL pins, and the internal oscillator can be disabled by setting the OSCEN bit in the Option Register (OPTION_REG) to 0.