ST STM32F40 Series

RM0090 Flexible static memory controller (FSMC)
Doc ID 018909 Rev 4 1372/1422
Table 221. ECC result relevant bits
ECCPS[2:0] Page size in bytes ECC bits
000 256 ECC[21:0]
001 512 ECC[23:0]
010 1024 ECC[25:0]
011 2048 ECC[27:0]
100 4096 ECC[29:0]
101 8192 ECC[31:0]