Interface cell for circuit adjustment

A method of operating an integrated circuit to program a programmable circuit in the integrated circuit, the method comprising:

• enabling interface circuitry coupled to translation circuitry and coupled to an input of the programmable circuit of the integrated circuit, wherein the interface circuitry interfaces a higher voltage domain to a different lower voltage domain that includes the translation circuitry, with the higher voltage domain providing a higher operating voltage to circuitry in the higher voltage domain and the lower voltage domain providing a lower operating voltage relative to the higher operating voltage to circuitry in the lower voltage domain;
• receiving a signal at the input of the programmable circuit to provide data from the translation circuitry to logic circuitry of the integrated circuit, with the interface circuitry enabled to an on-state;
• and
• controlling the signal to provide a digital output from the translation circuitry to the logic circuitry.