Datasheet

31
8272CS–AVR–06/11
ATmega164A/PA/324A/PA/644A/PA/1284/P
12. Datasheet Revision History
Please note that the referring page numbers in this section are referred to this document. The
referring revision in this section are referring to the document revision.
12.1 Rev. 8272C - 06/11
12.2 Rev. 8272B - 05/11
1. Updated ”ATmega1284P DC Characteristics” on page 334.
1. Added Atmel QTouch Library Support and QTouch Sensing Capability Features.
2. Replaced Figure 1-1 on page 2 by an updated “Pinout” that includes Timer/Counter3.
3. Replaced Figure 7-1 on page 10 by an updated “Block Diagram of the AVR Architecture” that
includes Timer/Counter3.
4. Added ”RAMPZ – Extended Z-pointer Register for ELPM/SPM
(1)
” on page 15.
5. Added ”PRR1 – Power Reduction Register 1” on page 49.
6. Renamed PRR to ”PRR0 – Power Reduction Register 0” on page 48.
7. Updated ”PCIFR – Pin Change Interrupt Flag Register” on page 69. PCICR replaces EIMSR in
the PCIF3, PCIF2, PCIF1 and PCIF0 bit description.
8. Updated ”PCMSK3 – Pin Change Mask Register 3” on page 70. PCIE3 replaces PCIE2 in the bit
description.
9. Updated ”Alternate Functions of Port B” on page 82 to include Timer/Counter3
10. Updated ”Alternate Functions of Port D” on page 88 to include Timer/Counter3
11. Added ”TCNT3H and TCNT3L –Timer/Counter3” on page 136
12. Added ”OCR3AH and OCR3AL – Output Compare Register3 A” on page 137
13. Added ”OCR3BH and OCR3BL – Output Compare Register3 B” on page 137
14. Added ”TIMSK3 – Timer/Counter3 Interrupt Mask Register” on page 139
15. Updated All “SPI – Serial Peripheral Interface” “Register Description” to reflect ATmega1284 and
ATmega1284P.
16. Updated ”Addressing the Flash During Self-Programming” on page 284 to include RAMPZ
register.
17. Updated Table 27-16 on page 314. t
WD_EEPROM
is 3.6ms instead of 9ms.
18. BODS and BODSE bits denoted as R/W
19. Description of external pin modes below table 16-9 removed.
20. Updated ”Register Summary” on page 10 to include Timer/Counter3.
21. Updated the datasheet with Atmel new style guide.