More enhancements include the ability to place the voltage regulators and the pre-fetch engine in low power modes. Also, two more timers have been integrated to provide additional functionality. This combined with the fact that the UART includes its own baud rate generator means there are many free resources to use. The ADC sample rate has been increased to 500 ksps providing more flexibility in signal processing. Included in the ADC enhancements is the use of a slightly different voltage reference design. The reference has more options for modifying the sensitivity of a system. For example, the internal reference can drive the ADC for 1.2 V or 2.4 V which provides the capability to maximize the dynamic range of the system.