What date was part number rk80533pz933256 released?
CREATE TABLE "180_nm" (
  "model_number" text,
  "s_spec_number" text,
  "frequency" text,
  "l2_cache" text,
  "mult" text,
  "voltage" text,
  "socket" text,
  "release_date" text,
  "part_number_s" text
);
SELECT "release_date" FROM "180_nm" WHERE "part_number_s"='rk80533pz933256';