Programmable tracking circuit of SA (sense amplifier) of SRAM (static random access memory)

The invention discloses a programmable tracking circuit of an SA (sense amplifier) of an SRAM (static random access memory). The programmable tracking circuit comprises a word line driving circuit (WLDRIVER), a programmable timing control circuit and a sense amplifier driving circuit (SA Driver), wherein the WLDRIVER is used for driving word line signals WL and DWL; the programmable timing control circuit is controlled by DWL, and is a programmable array DBL (duplicated bit line) discharging circuit mainly comprising NMOSs (N-channel metal oxide semiconductors); the SA Driver is used for controlling the on and off of the SA. According to the programmable tracking circuit, the influence of process variations, voltage and temperature on the on-off time of the SA is avoided.