VCAP charging current

Question:

What is the VCAP charging current?

 

Answer:

 

Response: VCAP charging current is maximum of 330mA for 5V devices and 300mA for 3.3V and serial devices.

Explanation: During power up, VCAP is charged to VCC through the VCAP pin. The charging current should ensure that the VCAP pin reaches a minimum of 2.65V (which is the VSWITCH value) within tHRECALL time (and thus be ready for any power down event immediately after tHRECALL time) even for the worst case capacitor (VCAP max) placed at the VCAP pin.  This charging current limited by the internal circuit. The average charging current will lesser than the maximum charging current.