ATmega8 Atmel Corporation, ATmega8 Datasheet - Page 24

• Manufacturer Part Number: ATmega8
• Manufacturer: Atmel Corporation

Specifications of ATmega8

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 2
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 1
• Pwm Channels: 3
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Changes from Rev.
2486B-12/01 to
Rev. 2486C-03/02
1. Updated TWI Chapter.
2. Updated Description of OSCCAL Calibration Byte.
3. Added Some Preliminary Test Limits and Characterization Data.
4. Updated Programming Figures.
5. Added a Description on how to Enter Parallel Programming Mode if RESET Pin is Dis-
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
Added the description at the end of
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:
Improved description of
bration Byte” on page
Removed some of the TBD’s in the following tables and pages:
Table 3 on page
-40°C to +85°C, VCC = 2.7V to 5.5V (unless otherwise noted)” on page
page
Figure 104 on page 219
must be connected during Programming mode.
abled or if External Oscillators are Selected.
Added a note in section
237, and
Table 102 on page
26,
Table 15 on page
218.
“Enter Programming Mode” on page
“Oscillator Calibration Register – OSCCAL” on page 31
and
Figure 112 on page 230
“Bit Rate Generator Unit” on page
239.
“Address Match Unit” on page
38,
Table 16 on page
are updated to also reflect that AV
42,
221.
Table 17 on page
164.
164.
235,
Table 99 on
and
44,
“Cali-
“T
A
CC
=