3.2.2 Boot Loader Parameters for ATmega325A/PA/3250A/PA
A clarification has been made to list the Boot loader parameters and the Read-While-Write limits for ATmega325A/PA/3250A/PA.
| BOOTSZ1 | BOOTSZ0 | Boot Size | Pages | Application Flash Section | Boot Loader Flash Section | End Application Section | Boot Reset Address (Start Boot Loader Section) |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 256 words | 4 | 0x0000 - 0x3EFF | 0x3F00 - 0x3FFF | 0x3EFF | 0x3F00 |
| 1 | 0 | 512 words | 8 | 0x0000 - 0x3DFF | 0x3E00 - 0x3FFF | 0x3DFF | 0x3E00 |
| 0 | 1 | 1024 words | 16 | 0x0000 - 0x3BFF | 0x3C00 - 0x3FFF | 0x3BFF | 0x3C00 |
| 0 | 0 | 2048 words | 32 | 0x0000 - 0x37FF | 0x3800 - 0x3FFF | 0x37FF | 0x3800 |
Note: The Figure Memory sections shows
the different BOOTSZ Fuse configurations.
| Section | Pages | Address |
|---|---|---|
| Read-While-Write (RWW) section | 224 | 0x0000 - 0x37FF |
| No Read-While-Write (NRWW) section | 32 | 0x3800 - 0x3FFF |
Note: For details about these two sections, see NRWW – No
Read-While-Write Section and RWW – Read-While-Write Section.