The BF531, BF532, BF533, BF534, BF536, BF537, and BF538 processors have up to 148 KB of on-chip memory. Most Blackfin applications you create using LabVIEW require external memory to run. The actual amount of external memory depends on the hardware. The BF533 EZ-KIT and the BF537 EZ-KIT have 64 MB of external SDRAM, which is sufficient for most applications.
Code and/or data you place in external memory slows execution performance. Use memory mapping to place critical code and/or data in on-chip memory to improve performance.