pcf85263atl ax battery switch over rtc

{"cid":"91223848","title":"PCF85263ATL\/AX Tiny RTC\/Calendar With Alarm Function, Battery Switch-Over, Time StampInput, And I2C-bus","imgUrl":"https:\/\/img.chinax.com\/nimg\/70\/f7\/14144b5bf8bba9725ea7c5969e22-200x200-1.jpg","attrs":{"Price":"consult with","Brand Name":"NXP","Model Number":"PCF85263ATL\/AX","Minimum Order Quantity":"1","Delivery Time":"5-8day","Certification":"ROHS","Place of Origin":"CN","Payment Terms":"T\/T,Western Union","Supply Ability":"10000","Packaging Details":"T\/R","Product Category:":"Real Time Clock","RTC Bus Interface:":"I2C","Operating temperature range (\u00b0C)":"-40\u2103~+85\u2103","Supply voltage (min) (V)":"900mV","Supply voltage (max) (V)":"5.5V","Operating current":"280nA"}}