The maximum clock frequency that can be used with the internal oscillator is 16 MHz, but it's recommended to use 8 MHz or lower for optimal performance and to minimize power consumption.
To configure the watchdog timer, you need to set the WDTCLK register to select the clock source, set the WDTCNT register to set the timeout period, and enable the watchdog timer by setting the WDTEN bit in the WDTCTL register.
Yes, the ADC can be used to convert analog signals from external sources. You need to configure the ADC to use an external reference voltage and select the correct analog input channel. Additionally, you need to ensure that the external signal is within the ADC's input range and meets the required impedance and noise specifications.
To implement a low-power mode, you can use the STOP or WAIT instructions to put the MCU in a low-power state. You can also use the BCSR register to control the clock gating and reduce power consumption. Additionally, you can use the VREG register to adjust the voltage regulator to a lower voltage to reduce power consumption.
Yes, the MCU's internal flash memory can be used to store data. However, the flash memory is not suitable for frequent write operations, and it's recommended to use the EEPROM or external memory for data storage that requires frequent updates.
MC9S08FL8CLC datasheet
by Freescale Semiconductor
