Patent ID: 7368800

Claim:
Integrated circuitry comprising: a semiconductor substrate comprising a first circuitry area and a second circuitry area; isolation trenches received within semiconductive material of the semiconductor substrate within the first circuitry area and within the second circuitry area; the first circuitry area comprising a first minimum active area spacing between the isolation trenches received therein and the second circuitry area comprising a second minimum active area spacing between the isolation trenches received therein, the first minimum active area spacing being less than the second minimum active area spacing; and insulative material being received within the isolation trenches within the semiconductive material within the first circuitry array area and within the second circuitry area, all insulative material within the first circuitry array area isolation trenches being void of any insulative aluminum nitride, insulative material received within the isolation trenches within the second circuitry area comprising an insulative nitride-comprising layer comprising aluminum nitride, the insulative aluminum nitride-comprising layer comprising opposing sidewalls that face one another within the semiconductive material and a base surface extending from and between the opposing and facing sidewalls within the semiconductive material.