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ATMEGA8-16PU

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23
19
ATmega8(L)
2486RS–AVR–07/07
5. Updated descripton for bit 4 in “Store Program Memory Control Register –
SPMCR” on page 213.
6. Updated “Ordering Information” on page 13.
Changes from Rev.
2486M-12/03 to Rev.
2486N-09/04
1. Added note to MLF package in “Pin Configurations” on page 2.
2. Updated “Internal Voltage Reference Characteristics” on page 42.
3. Updated “DC Characteristics” on page 242.
4. ADC4 and ADC5 support 10-bit accuracy. Document updated to reflect this.
Updated features in “Analog-to-Digital Converter” on page 196.
Updated “ADC Characteristics” on page 248.
5. Removed reference to “External RC Oscillator application note” from “Exter-
nal RC Oscillator” on page 29.
Changes from Rev.
2486L-10/03 to Rev.
2486M-12/03
1. Updated “Calibrated Internal RC Oscillator” on page 30.
Changes from Rev.
2486K-08/03 to Rev.
2486L-10/03
1. Removed “Preliminary” and TBDs from the datasheet.
2. Renamed ICP to ICP1 in the datasheet.
3. Removed instructions CALL and JMP from the datasheet.
4. Updated t
RST
in Table 15 on page 38, V
BG
in Table 16 on page 42, Table 100 on
page 244 and Table 102 on page 246.
5. Replaced text “XTAL1 and XTAL2 should be left unconnected (NC)” after
Table 9 in “Calibrated Internal RC Oscillator” on page 30. Added text regard-
ing XTAL1/XTAL2 and CKOPT Fuse in “Timer/Counter Oscillator” on page 32.
6. Updated Watchdog Timer code examples in “Timed Sequences for Changing
the Configuration of the Watchdog Timer” on page 45.
7. Removed bit 4, ADHSM, from “Special Function IO Register – SFIOR” on page
58.
8. Added note 2 to Figure 103 on page 215.
9. Updated item 4 in the “Serial Programming Algorithm” on page 238.
10. Added t
WD_FUSE
to Table 97 on page 239 and updated Read Calibration Byte,
Byte 3, in Table 98 on page 240.
11. Updated Absolute Maximum Ratings* and DC Characteristics in “Electrical
Characteristics” on page 242.
20
ATmega8(L)
2486RS–AVR–07/07
Changes from Rev.
2486J-02/03 to Rev.
2486K-08/03
1. Updated V
BOT
values in Table 15 on page 38.
2. Updated “ADC Characteristics” on page 248.
3. Updated “ATmega8 Typical Characteristics” on page 249.
4. Updated “Erratas” on page 17.
Changes from Rev.
2486I-12/02 to Rev.
2486J-02/03
1. Improved the description of “Asynchronous Timer Clock – clk
ASY
” on page 26.
2. Removed reference to the “Multipurpose Oscillator” application note and the
“32 kHz Crystal Oscillator” application note, which do not exist.
3. Corrected OCn waveforms in Figure 38 on page 90.
4. Various minor Timer 1 corrections.
5. Various minor TWI corrections.
6. Added note under “Filling the Temporary Buffer (Page Loading)” on page 216
about writing to the EEPROM during an SPM Page load.
7. Removed ADHSM completely.
8. Added section “EEPROM Write during Power-down Sleep Mode” on page 23.
9. Removed XTAL1 and XTAL2 description on page 5 because they were already
described as part of “Port B (PB7..PB0) XTAL1/XTAL2/TOSC1/TOSC2” on
page 5.
10. Improved the table under “SPI Timing Characteristics” on page 246 and
removed the table under “SPI Serial Programming Characteristics” on page
241.
11. Corrected PC6 in “Alternate Functions of Port C” on page 61.
12. Corrected PB6 and PB7 in “Alternate Functions of Port B” on page 58.
13. Corrected 230.4 Mbps to 230.4 kbps under “Examples of Baud Rate Setting”
on page 159.
14. Added information about PWM symmetry for Timer 2 in “Phase Correct PWM
Mode” on page 113.
15. Added thick lines around accessible registers in Figure 76 on page 169.
16. Changed “will be ignored” to “must be written to zero” for unused Z-pointer
bits under “Performing a Page Write” on page 216.
17. Added note for RSTDISBL Fuse in Table 87 on page 223.
18. Updated drawings in “Packaging Information” on page 14.
21
ATmega8(L)
2486RS–AVR–07/07
Changes from Rev.
2486H-09/02 to Rev.
2486I-12/02
1. Added errata for Rev D, E, and F on page 17.
Changes from Rev.
2486G-09/02 to Rev.
2486H-09/02
1. Changed the Endurance on the Flash to 10,000 Write/Erase Cycles.
Changes from Rev.
2486F-07/02 to Rev.
2486G-09/02
1. Updated Table 103, “ADC Characteristics,” on page 248.
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 have 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.
4. Changes in “Reading the Calibration Byte” on page 234.
5. 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.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P23

ATMEGA8-16PU

Mfr. #:
Buy ATMEGA8-16PU
Manufacturer:
Microchip Technology / Atmel
Description:
8-bit Microcontrollers - MCU 8kB Flash 0.5kB EEPROM 23 I/O Pins
Lifecycle:
New from this manufacturer.
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