ATmega8 Atmel Corporation, ATmega8 Datasheet - Page 296
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ATmega8
Manufacturer Part Number
ATmega8
Description
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
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Changes from Rev.
2486B-12/01 to
Rev. 2486C-03/02
296
ATmega8(L)
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 8MHz 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,
2486Z–AVR–02/11
Table 99 on
and
44,
“TA =
“Cali-
CC