A self-repairing SRAM and a method for reducing parametric failures in
SRAM. On-chip leakage or delay monitors are employed to detect inter-die
Vt process corners, in response to which the SRAM applies adaptive body
bias to reduce the number of parametric failures in a die and improve
memory yield. Embodiments include circuitry for applying reverse body
bias (RBB) to the SRAM array in the presence of a low inter-die V.sub.t
process corner, thereby reducing possible read and hold failures, and
applying forward body bias (FBB) to the array in the presence of a high
inter-die V.sub.t process corner, thereby reducing possible access and
write failures.