stm32F205: 96 unique ID: use only 32

I can't find a good cite, but as I recall one of the flash demonstrator or PM00xx manuals made some reference to die location and lot numbers. I'd be temped to hash or CRC.

http://false.ekta.is/2012/06/stm32-device-electronic-signature-unique-device-id-register/

//STARM TSMC ENGI INFORMATION FLASH
//DWORD ADDR_RAM_SIZE = 0x1FFFF7E3;
//DWORD ADDR_RAM_SIZE = 0x1FFFF7E2;
//DWORD ADDR_FLASH_SIZE = 0x1FFFF7E1;
//DWORD ADDR_FLASH_SIZE = 0x1FFFF7E0;
//DWORD ADDR_HOT_TMP_SNSR = 0x1FFFF7E7;
DWORD ADDR_HOT_TMP_SNSR = 0x1FFFF7E6;
//DWORD ADDR_AMB_TMP_SNSR = 0x1FFFF7E5;
DWORD ADDR_AMB_TMP_SNSR = 0x1FFFF7E4;
//DWORD ADDR_VREF_INT = 0x1FFFF7EB;
DWORD ADDR_VREF_INT = 0x1FFFF7EA;
DWORD ADDR_LOT_ID_6 = 0x1FFFF7E9;
DWORD ADDR_LOT_ID_5 = 0x1FFFF7E8;
DWORD ADDR_LOT_ID_4 = 0x1FFFF7EF;
DWORD ADDR_LOT_ID_3 = 0x1FFFF7EE;
DWORD ADDR_LOT_ID_2 = 0x1FFFF7ED;
DWORD ADDR_LOT_ID_1 = 0x1FFFF7EC;
DWORD ADDR_LOT_ID_0 = 0x1FFFF7F3;
DWORD ADDR_WAFER_ID = 0x1FFFF7F2;
DWORD ADDR_Y = 0x1FFFF7F1;
DWORD ADDR_X = 0x1FFFF7F0;
DWORD ADDR_FREE = 0x1FFFF7F7;
DWORD ADDR_FLOW_ID_1 = 0x1FFFF7F6;
DWORD ADDR_FLOW_ID_0 = 0x1FFFF7F5;
DWORD ADDR_TEMP_RCTRIM = 0x1FFFF7F4;
DWORD ADDR_USER_OPB = 0x1FFFF800;
DWORD ADDR_DATA_OPB = 0x1FFFF804;
DWORD ADDR_RDP_OPB = 0x1FFFF800;
DWORD ADDR_WRP0_OPB = 0x1FFFF808;
DWORD ADDR_WRP2_OPB = 0x1FFFF80C;