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ATMEGA48A Datasheet(PDF) 37 Page - ATMEL Corporation |
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ATMEGA48A Datasheet(HTML) 37 Page - ATMEL Corporation |
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37 / 39 page  37 ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET] Atmel-8271IS-AVR- ATmega-Datasheet_10/2014 12.5 Rev. 8271E – 07/2012 12.6 Rev. 8271D – 05/11 12.7 Rev. 8271C – 08/10 12.8 Rev. 8271B – 04/10 1. Updated Figure 1-1 on page 3. Overlined “RESET” in 28 MLF top view and in 32 MLF top view. 2. Added EEAR9 bit to the ”EEARH and EEARL – The EEPROM Address Register” on page 22 and updated the all bit descriptions accordingly. 3. Added a footnote “EEAR9 and EEAR8 are unused bits in ATmega48A/48PA and must always be written to zero” to ”EEARH and EEARL – The EEPROM Address Register” on page 22. 4. Updated Table 18-8 on page 155, “Waveform Generation Mode Bit Description” . WGM2, WGM1 and WGM0 changed to WGM22, WGM21 and WGM20 respectively. 5. Updated ”TCCR2B – Timer/Counter Control Register B” on page 156. bit 2 (CS22) and bit 3 (WGM22) changed from R (read only) to R/W (read/write). 6. Updated the definition of fosc on page 172. fosc is the system clock frequency (not XTAL pin frequency) 7. Updated ”SPMCSR – Store Program Memory Control and Status Register” on page 261. Bit 0 renamed SPMEN and added bit 5 “SIGRD”. 8. Replaced “SELFPRGEN” by “SPMEN” throughout the whole datasheet including in the “code examples”, except in ”Program And Data Memory Lock Bits” on page 280 and in ”Fuse Bits” on page 281. 9. Updated ”Register Summary” on page 9 to include the bits: SIGRD and SPMEN in the SMPCSR register. 10. Updated the Table 30-1 on page 313. Removed the footnote. 11. Updated the footnote of the Table 29-13 on page 306. Removed the footnote “Note 2”. 12. Updated ”Errata” on page 29. Added “Errata” TWI Data setup time can be too short. 1. Added Atmel QTouch Sensing Capability Feature 2. Updated ”Register Description” on page 91 with PINxn as R/W. 3. Added a footnote to the PINxn, page 91. 4. Updated “Ordering Information”,”ATmega328” on page 22. Added “ATmega328-MMH” and “ATmega328-MMHR”. 5. Updated “Ordering Information”,”ATmega328P” on page 23. Added “ATmega328P-MMH” and “ATmega328P- MMHR”. 6. Added “Ordering Information” for ATmega48PA/88PA/168PA/328P @ 105 C 7. Updated ”Errata ATmega328” on page 33 and ”Errata ATmega328P” on page 34 8. Updated the datasheet according to the Atmel new brand style guide. 1. Added 32UFBGA Pinout, Table 1-1 on page 3. 2. Updated the “SRAM Data Memory”, Figure 8-3 on page 19. 3. Updated ”Ordering Information” on page 16 with CCU and CCUR code related to “32CC1” Package drawing. 4. “32CC1” Package drawing added ”Packaging Information” on page 24. 1. Updated Table 9-8 with correct value for timer oscillator at xtal2/tos2 2. Corrected use of SBIS instructions in assembly code examples. 3. Corrected BOD and BODSE bits to R/W in Section 10.11.2 on page 45, Section 12.5 on page 68 and Section 14.4 on page 91 4. Figures for bandgap characterization added, Figure 31-34 on page 335, Figure 31-81 on page 360, Figure 31-128 on page 385, Figure 31-176 on page 411, Figure 31-223 on page 435, Figure 31-271 on page 461, Figure 31-318 on page 485 and Figure 31-365 on page 510. 5. Updated ”Packaging Information” on page 24 by replacing 28M1 with a correct corresponding package. |
Similar Part No. - ATMEGA48A_14 |
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Similar Description - ATMEGA48A_14 |
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