3.2.3 Boot Loader Parameters for ATmega645A/P/6450A/P

A clarification has been made to list the Boot loader parameters and the Read-While-Write limits for ATmega645A/P/6450A/P.

Table 3-5. Boot Size Configuration (ATmega645A/P/6450A/P)(1)
BOOTSZ1 BOOTSZ0 Boot Size Pages Application Flash
 Section Boot Loader Flash
 Section End Application
 Section Boot Reset Address
(Start Boot 
Loader Section)
1 1 512 words 4 0x0000 - 0x7DFF 0x7E00 - 0x7FFF 0x7DFF 0x7E00
1 0 1024 words 8 0x0000 - 0x7BFF 0x7C00 - 0x7FFF 0x7BFF 0x7C00
0 1 2048 words 16 0x0000 - 0x77FF 0x7800 - 0x7FFF 0x77FF 0x7800
0 0 4096 words 32 0x0000 - 0x6FFF 0x7000 - 0x7FFF 0x6FFF 0x7000
Note: The Figure Memory sections shows the different BOOTSZ Fuse configurations.
Table 3-6. Read-While-Write Limit (ATmega645A/P/6450A/P)(1)
Section Pages Address
Read-While-Write (RWW) section 224 0x0000 - 0x6FFF
No Read-While-Write (NRWW) section 32 0x7000 - 0x7FFF
Note: For details about these two sections, see NRWW – No Read-While-Write Section and RWW – Read-While-Write Section.