hello guys, hope you still know me
How could we forget you... 
Hello mate. 
Simple maths is what you need...for 36 frames you need 2 bytes for each current segment so :
per frame:
12 current segments
2 bytes each 12*2 = 24
36 frames 36*24 = 864
PLUS you may need 1 PWM set
1 byte for each LED = 132
Bytes needed for each frame set = 864+132 = 996
For 3 devices 3*996 = 2988
therefore you need less than 3KB for each 36 frame set.