Atmel ATmega328

7
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
ATmega48A/PA/88A/PA/168A/PA/328/P support a real Read-While-Write Self-Programming
mechanism. There is a separate Boot Loader Section, and the SPM instruction can only execute
from there. In ATmega 48A/48PA there is no Read-While-Write support and no separate Boot
Loader Section. The SPM instruction can execute from the entire Flash.
ATmega88PA 8KBytes 512Bytes 1KBytes 1 instruction word/vector
ATmega168A 16KBytes 512Bytes 1KBytes 2 instruction words/vector
ATmega168PA 16KBytes 512Bytes 1KBytes 2 instruction words/vector
ATmega328 32KBytes 1KBytes 2KBytes 2 instruction words/vector
ATmega328P 32KBytes 1KBytes 2KBytes 2 instruction words/vector
Table 2-1. Memory Size Summary (Continued)
Device Flash EEPROM RAM Interrupt Vector Size