Split power supply bias with kill switch

A device to regulate a transition between voltage levels comprising:

• a voltage regulator component providing a first voltage and a second voltage, the first voltage having a value between a supply voltage and one half of the supply voltage, and the second voltage having a value between one half of the supply voltage and a ground voltage level;
• a slew rate control component controlling a rate of change of an output voltage;
• a pull down component to pull down the output voltage;
• a first logic component to control the slew rate component;
• and
• a second logic component to control the pull down component.

A device to regulate a transition between voltage levels comprising:

• a source voltage input;
• a ground voltage connection;
• a dual mid-rail voltage supply connected to the source voltage input and the ground voltage connection and outputting a below-source voltage and an above-ground voltage;
• a first logic circuit connected to the above-ground voltage and the ground voltage connection and outputting a first logic output and a second logic output, the first logic output being the inverse of the second logic output;
• a second logic circuit connected to the source voltage input, the below-source voltage, the above-ground voltage, and the ground voltage connection and outputting a third logic output;
• a slew rate control circuit connected to the source voltage, the third logic output, and the below-source voltage and comprising at least two switches;
• and
• a pull-down circuit connected to the second logic output, the ground voltage connection, the above-ground voltage, and the slew rate control circuit.

A method to regulate voltage levels comprising:

• creating, from a supply voltage, a plurality of voltages including a first, second, third and fourth voltage, said first voltage being less than the supply voltage and higher than two thirds of a difference between the supply voltage and a ground voltage level, said second voltage being less than two thirds of the difference between the supply voltage and the ground voltage level and higher than a third of a difference between the supply voltage and the ground voltage level, said third voltage being less than two thirds of the difference between the supply voltage and the ground voltage level and higher than a third of a difference between the supply voltage and the ground voltage level, said fourth voltage being less than one third of the difference between the supply voltage and the ground voltage level and higher than the ground voltage level;
• providing at least one load connected to the supply voltage and at least two of the first, second, third and fourth voltages, the at least one load having a process voltage limit;
• and
• varying at least one of the at least two voltage, based on at least the process voltage limit.

A method to regulate voltage levels for a stack connected to a supply voltage, the method comprising:

• creating from the supply voltage a plurality of N−1 voltage pairs, where N is the number of devices in the stack, each voltage pair of the plurality of voltage pairs including an upper voltage and a lower voltage, the upper voltage of the nth voltage pair, where n is an integer number that ranges from 1 to N−1, being less than (n+1)/N of the supply voltage and higher than n/N of the supply voltage, and the lower voltage level of the nth voltage level difference being less than n/N of the supply voltage and higher than (n−1)/N of the supply voltage;
• providing the plurality of N−1 voltage pairs to the stack;
• and
• varying at least one voltage of the plurality of voltage pairs based on at least a process voltage limit of at least one device of the stack.