AR# 4549

Description

General Description: Are the 4000XL and 4000XV device families 

footprint compatible within the same package?

Solution

The 4000XL and 4000XV devices are footprint compataible except 

for the power supplies.  

XV devices have both VCCIO and VCCINT. The VCCIO pins are the 

same as the VCC pins on the XL device. 

However, there are some additional pins labelled VCCINT on the 

XV. These will need to be connected to 2.5V. 

The VCCINT pins were normal IO pins on the XL device but are 

now used to supply the core voltage.