The FlexCan module of k10 has 16 MB(message buffers), each MB has 16 bytes RAM, the total RAM size is 16*16=256 bytes.
Pls refer to the section in RM of K10:
"184.108.40.206 Number of message buffers
Each FlexCAN module contains 16 message buffers. Each message buffer is 16 bytes.
Hope it can help you