ATmega48P/88P/168P
2.2
Comparison Between ATmega48P, ATmega88P and ATmega168P
The ATmega48P, ATmega88P and ATmega168P differ only in memory sizes, boot loader sup-
port, and interrupt vector sizes.
summarizes the different memory and interrupt vector
sizes for the three devices.
Table 2-1.
Device
ATmega48P
ATmega88P
ATmega168P
Memory Size Summary
Flash
4KBytes
8KBytes
16KBytes
EEPROM
256Bytes
512Bytes
512Bytes
RAM
512Bytes
1KBytes
1KBytes
Interrupt Vector Size
1 instruction word/vector
1 instruction word/vector
2 instruction words/vector
ATmega88P and ATmega168P 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 ATmega48P, there is no Read-While-Write support and no separate Boot Loader Section.
The SPM instruction can execute from the entire Flash.
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8025MS–AVR–6/11
ATMEL [ ATMEL CORPORATION ]
