CHW in yaml definition not working as expected

[yousefbilal]

I am using MAX78002 which is supposed to handle up to 286×286 without streaming. I attached my yaml (as txt since yaml is not allowed here) file for reference. When the data format is not specified I get this error:
ERROR: Layer 0: 4 channels/word 224x224 input (size 200704) with input offset 0x0000 and expansion 1x exceeds data memory instance size of 81920.

When I add data_format: CHW I get more or less the same error:
ERROR: Layer 0: HWC (4 channels/word) 8-bit 224x224 output (size 200704) with output offset 0x4000 and expansion 1x exceeds data memory instance size of 81920.

I don't know where the 4 channels are coming from since my data is (3,224,224). When I enable streaming mode, it works but I don't want to enable it because of application restrictions.

mymobilenet.txt