Ordering information
STM8S903K3 STM8S903F3
Padding value for unused program memory (check only one option)
[ ]0xFF
[ ]0x83
[ ]0x75
Fixed value
TRAP instruction opcode
Illegal opcode (causes a reset when executed)
OPT0 memory readout protection (check only one option)
[ ] Disable or [ ] Enable
OPT1 user boot code area (UBC)
0x(_ _) fill in the hexadecimal value, refering to the datasheet and the binary format below.
UBC, bit0
[ ] 0: Reset
[ ] 1: Set
UBC bit1
[ ] 0: Reset
[ ] 1: Set
UBC bit2
[ ] 0: Reset
[ ] 1: Set
UBC bit3
[ ] 0: Reset
[ ] 1: Set
UBC bit4
[ ] 0: Reset
[ ] 1: Set
UBC bit5
[ ] 0: Reset
[ ] 1: Set
UBC bit6
[ ] 0: Reset
[ ] 1: Set
UBC bit7
[ ] 0: Reset
[ ] 1: Set
Note: If the UBC area is not used, please select all bits at reset states.
OPT2 alternate function remapping for STM8S903K3
Do not use more than one remapping option in the same port.
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DocID15590 Rev 8