AT93C46: difference between o connect and don conect?

[CMOS]

93C46 EEPROM

Hi,
The datasheet of AT93C46A shows to pins as pin 6 = NC (No Connect) and pin 7 = DC (Don't Connect) . What is the difference between "No Connect" and "Don't Connect" ? I understand that Don't Connect shouldn't be connected in the circuit. But Why?

 

[XNOX_Rambo]

Re: 93C46 EEPROM

It is probably a pin that is used to test the chip in some way during production.

Generally speaking one should always check this when second sourcing
chips. In this case other vendors have the same pin marked NC.

/Rambo