ATMEGA8-16AI SL383 Atmel, ATMEGA8-16AI SL383 Datasheet - Page 225

• Manufacturer Part Number: ATMEGA8-16AI SL383
• Description: Semiconductors and Actives, Microprocessors, Microcontrollers
• Manufacturer: Atmel

Signature Bytes
Calibration Byte
Page Size
2486W–AVR–02/10
All Atmel microcontrollers have a 3-byte signature code which identifies the device. This code
can be read in both Serial and Parallel mode, also when the device is locked. The three bytes
reside in a separate address space.
For the ATmega8 the signature bytes are:
1. 0x000: 0x1E (indicates manufactured by Atmel).
2. 0x001: 0x93 (indicates 8KB Flash memory).
3. 0x002: 0x07 (indicates ATmega8 device).
The ATmega8 stores four different calibration values for the internal RC Oscillator. These bytes
resides in the signature row High byte of the addresses 0x0000, 0x0001, 0x0002, and 0x0003
for 1, 2, 4, and 8 Mhz respectively. During Reset, the 1 MHz value is automatically loaded into
the OSCCAL Register. If other frequencies are used, the calibration value has to be loaded
manually, see “Oscillator Calibration Register – OSCCAL” on page 31 for details.
Table 89. No. of Words in a Page and no. of Pages in the Flash
Table 90. No. of Words in a Page and no. of Pages in the EEPROM
4K words (8K bytes)
EEPROM Size
512 bytes
Flash Size
Page Size
4 bytes
Page Size
32 words
PCWORD
EEA[1:0]
PCWORD
PC[4:0]
No. of Pages
No. of Pages
128
128
PCPAGE
EEA[8:2]
PCPAGE
PC[11:5]
ATmega8(L)
EEAMSB
PCMSB
8
11
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