how to improve memory retention

{"cid":"91214719","title":"166 MHz Data Retention Integrated Circuit Memory for Performance Improvement","imgUrl":"https:\/\/img.chinax.com\/nimg\/87\/f9\/8aaeb28d16b5e0a8b512ebd36cd4-200x200-1.jpg","attrs":{"Price":"1","Brand Name":"MOLEX","Model Number":"874271034","Minimum Order Quantity":"1","Delivery Time":"1-2 WEEKS","Place of Origin":"USA","Certification":"ROHS","Packaging Details":"Tape & Reel (TR)","Payment Terms":"T\/T","Supply Ability":"10000pcs\/day","Access Time":"Non-Volatile","Operating Temperature Range":"-40\u00b0C ~ 125\u00b0C\uff08TA\uff09","Type":"Integrated Circuit Storage","Data Transfer Rate":"1.8ms","Data Retention":"166 MHz","Capacity":"2Gb","Voltage":"1.7V ~ 2V"}}