In PIC12C5XX programming guide I found a requirement:
1.1 Hardware Requirements
The PIC12C5XX requires two programmable power supplies, one for V_DD (2.0V to 6.5V recommended) and one for V_PP (12V to 14V). Both supplies should have a minimum resolution of 0.25V.
What does it mean?
I found an article on power supply resolution versus accuracy, and it boils down to:
Our power supplies use Digital to Analog Converters (DACs) to take the user inputted settings and convert them to analog signals that set a programming voltage that will interact with the control loop of the power supply to set the output. The resolution supplemental characteristic represents one single count of the DAC.
Which means it applies to power supplies where the user sets the voltage; minimum step by which the voltage can be changed. Now in the guide we have a pretty loose requirements for preset voltages, no requirement for them to be changeable by the user. I really don't see any application of supply resolution as explained by the article. The basic requirements look like if I apply 5V and 13V with accuracy +-1V I should be set. So what does the resolution mean in this context?