MC9S08SE4CTG datasheet by Freescale Semiconductor

MC9S08SE4CTG Frequently Asked Questions (FAQs)

• What is the maximum clock frequency of the MC9S08SE4CTG?
  The maximum clock frequency of the MC9S08SE4CTG is 20 MHz, but it can be overclocked to 24 MHz with some limitations.
• How do I configure the internal oscillator on the MC9S08SE4CTG?
  The internal oscillator on the MC9S08SE4CTG can be configured using the OSCCLK and OSCST registers. The oscillator frequency can be set to 4 MHz, 8 MHz, or 16 MHz, and the oscillator startup time can be adjusted using the OSCST register.
• What is the purpose of the VLLS (Very Low Leakage Stop) mode on the MC9S08SE4CTG?
  The VLLS mode on the MC9S08SE4CTG is a low-power mode that reduces the power consumption of the device to a minimum. In this mode, the CPU, peripherals, and clocks are stopped, and the device consumes only leakage current. VLLS mode is useful for applications that require extremely low power consumption during standby or sleep modes.
• How do I use the ADC on the MC9S08SE4CTG?
  The ADC on the MC9S08SE4CTG is a 12-bit successive approximation ADC that can be used to convert analog signals to digital values. To use the ADC, you need to configure the ADC clock, select the ADC channel, and start the ADC conversion. The ADC result can be read from the ADC result registers.
• What is the maximum current that can be sourced or sunk by the GPIO pins on the MC9S08SE4CTG?
  The maximum current that can be sourced or sunk by the GPIO pins on the MC9S08SE4CTG is 25 mA. However, the total current sourced or sunk by all GPIO pins should not exceed 100 mA to prevent overheating and damage to the device.