ATMEGA8L-8MUR Atmel, ATMEGA8L-8MUR Datasheet - Page 218

• Manufacturer Part Number: ATMEGA8L-8MUR
• Description: MCU AVR 8KB FLASH 8MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8L-8MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Signature Bytes
Calibration Byte
Page Size
218
ATmega8(L)
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 1MHz, 2MHz, 4MHz, and 8Mhz respectively. During Reset, the 1MHz value is automatically
loaded into the OSCCAL Register. If other frequencies are used, the calibration value has to be
loaded manually, see
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 (8 Kbytes)
EEPROM Size
512 bytes
Flash Size
Page Size
4 bytes
“Oscillator Calibration Register – OSCCAL” on page 31
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]
EEAMSB
for details.
PCMSB
8
11
2486Z–AVR–02/11