Instructions

26
8025I–AVR–02/09
ATmega48P/88P/168P/328P
9.4 Rev. 2545F-08/08
9.5 Rev. 2545E-08/08
9.6 Rev. 2545D-03/08
9.7 Rev. 2545C-01/08
1. Updated ”ATmega328P Typical Characteristics” on page 401 with Power-save
numbers.
2. Added ATmega328P ”Standby Supply Current” on page 408.
1. Updated description of ”Stack Pointer” on page 12.
2. Updated description of use of external capacitors in ”Low Frequency Crystal Oscilla-
tor” on page 32.
3. Updated Table 6-9 in ”Low Frequency Crystal Oscillator” on page 32.
4. Added note to ”Address Match Unit” on page 222.
5. Added section ”Reading the Signature Row from Software” on page 285.
6. Updated ”Program And Data Memory Lock Bits” on page 294 to include
ATmega328P in the description.
7. Added ”ATmega328P DC Characteristics” on page 316.
8. Updated ”Speed Grades” on page 316 for ATmega328P.
9. Removed note 6 and 7 from the table ”2-wire Serial Interface Characteristics” on
page 323.
10. Added figure ”Minimum Reset Pulse width vs. V
CC
.” on page 352 for ATmega48P.
11. Added figure ”Minimum Reset Pulse width vs. V
CC
.” on page 376 for ATmega88P.
12. Added figure ”Minimum Reset Pulse width vs. V
CC
.” on page 400 for ATmega168P.
13. Added ”ATmega328P Typical Characteristics” on page 401.
14. Updated Ordering Information for ”ATmega328P” on page 435.
1. Updated figures in ”Speed Grades” on page 316.
2. Updated note in Table 26-4 in ”System and Reset Characteristics” on page 320.
3. Ordering codes for ”ATmega328P” on page 435 updated.
- ATmega328P is offered in 20 MHz option only.
4. Added Errata for ATmega328P rev. B, ”Errata ATmega328P” on page 440.
1. Power-save Maximum values removed form ”ATmega48P DC Characteristics” on
page 314, ”ATmega88P DC Characteristics” on page 315, and ”ATmega168P DC
Characteristics” on page 315.