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ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller VQFN 32 (5x5) 8-Bit 10 MHz I/O number 23
27282930313233343536
12.17 Rev. 2545D-07/04
12.18 Rev. 2545C-04/04
12.19 Rev. 2545B-01/04
1. Updated instructions used with WDTCSR in relevant code examples.
2. Updated Table 8-5 on page 30, Table 28-4 on page 306, Table 26-9 on page 281,
and Table 26-11 on page 282.
3. Updated “System clock prescaler” on page 35.
4. Moved “TIMSK2 – Timer/Counter2 interrupt mask register” on page 157 and
“TIFR2 – Timer/Counter2 interrupt flag register” on page 157 to
“Register description” on page 152.
5. Updated cross-reference in “Electrical interconnection” on page 209.
6. Updated equation in “Bit rate generator unit” on page 215.
7. Added “Page size” on page 288.
8. Updated “Serial programming algorithm” on page 298.
9. Updated Ordering Information for “Atmel ATmega168” on page 17.
10. Updated “Errata Atmel ATmega88” on page 25 and “Errata Atmel ATmega168” on
page 27.
11. Updated equation in “Bit rate generator unit” on page 215.
1. Speed Grades changed: 12MHz to 10MHz and 24MHz to 20MHz
2. Updated “Speed grades” on page 304.
3. Updated “Ordering information” on page 15.
4. Updated “Errata Atmel ATmega88” on page 25.
1. Added PDIP to “I/O and Packages”, updated “Speed Grade” and Power Consumption
Estimates in 11.“Features” on page 1.
2. Updated “Stack pointer” on page 12 with RAMEND as recommended Stack Pointer
value.
3. Added section “Power reduction register” on page 40 and a note regarding the use of
the PRR bits to 2-wire, Timer/Counters, USART, Analog Comparator and ADC
sections.
4. Updated “Watchdog timer” on page 48.
5. Updated Figure 15-2 on page 129 and Table 15-3 on page 130.
6. Extra Compare Match Interrupt OCF2B added to features in section “8-bit
Timer/Counter2 with PWM and asynchronous operation” on page 139
7. Updated Table 9-1 on page 38, Table 23-5 on page 258, Table 27-4 to Table 27-7 on
page 285 to 287 and Table 23-1 on page 248. Added note 2 to Table 27-1 on page
284. Fixed typo in Table 12-1 on page 66.
8. Updated whole “Typical characteristics” on page 314.
9. Added item 2 to 5 in
“Errata Atmel ATmega48” on page 22.