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ATMEGA8-16AC Fiches technique(PDF) 21 Page - ATMEL Corporation |
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ATMEGA8-16AC Fiches technique(HTML) 21 Page - ATMEL Corporation |
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21 / 23 page  21 ATmega8(L) 2486QS–AVR–10/06 Changes from Rev. 2486E-06/02 to Rev. 2486F-07/02 1 Changes in “Digital Input Enable and Sleep Modes” on page 55. 2 Addition of OCS2 in “MOSI/OC2 – Port B, Bit 3” on page 59. 3 The following tables has been updated: Table 51, “CPOL and CPHA Functionality,” on page 132, Table 59, “UCPOL Bit Set- tings,” on page 158, Table 72, “Analog Comparator Multiplexed Input(1),” on page 195, Table 73, “ADC Conversion Time,” on page 200, Table 75, “Input Chan- nel Selections,” on page 206, and Table 84, “Explanation of Different Variables used in Figure 103 and the Mapping to the Z-pointer,” on page 221. 5 Changes in “Reading the Calibration Byte” on page 234. 6 Corrected Errors in Cross References. Changes from Rev. 2486D-03/02 to Rev. 2486E-06/02 1 Updated Some Preliminary Test Limits and Characterization Data The following tables have been updated: Table 15, “Reset Characteristics,” on page 38, Table 16, “Internal Voltage Refer- ence Characteristics,” on page 42, DC Characteristics on page 242, Table , “ADC Characteristics,” on page 248. 2 Changes in External Clock Frequency Added the description at the end of “External Clock” on page 32. Added period changing data in Table 99, “External Clock Drive,” on page 244. 3 Updated TWI Chapter More details regarding use of the TWI bit rate prescaler and a Table 65, “TWI Bit Rate Prescaler,” on page 173. Changes from Rev. 2486C-03/02 to Rev. 2486D-03/02 1 Updated Typical Start-up Times. The following tables has been updated: Table 5, “Start-up Times for the Crystal Oscillator Clock Selection,” on page 28, Table 6, “Start-up Times for the Low-frequency Crystal Oscillator Clock Selection,” on page 28, Table 8, “Start-up Times for the External RC Oscillator Clock Selec- tion,” on page 29, and Table 12, “Start-up Times for the External Clock Selection,” on page 32. 2 Added “ATmega8 Typical Characteristics” on page 249. Changes from Rev. 2486B-12/01 to Rev. 2486C-03/02 1 Updated TWI Chapter. More details regarding use of the TWI Power-down operation and using the TWI as Master with low TWBRR values are added into the datasheet. Added the note at the end of the “Bit Rate Generator Unit” on page 170. Added the description at the end of “Address Match Unit” on page 170. 2 Updated Description of OSCCAL Calibration Byte. In the datasheet, it was not explained how to take advantage of the calibration bytes for 2, 4, and 8 MHz Oscillator selections. This is now added in the following sections: |
Numéro de pièce similaire - ATMEGA8-16AC |
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Description similaire - ATMEGA8-16AC |
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