ATMEGA8L-8AUR Atmel, ATMEGA8L-8AUR Datasheet - Page 214

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

Specifications of ATMEGA8L-8AUR

• 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: *
• Package: 32TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: SPI/TWI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

214
ATmega8(L)
Table 83. Read-While-Write Limit
For details about these two section, see
and
Table 84. Explanation of Different Variables used in
to the Z-pointer
Note:
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
“RWW – Read-While-Write Section” on page
1. Z15:Z13: always ignored
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See
Z-pointer during Self-Programming
PC[11:5]
“Addressing the Flash During Self-Programming” on page 207
PC[4:0]
11
4
Corresponding
Z-value
Z12:Z6
Z5:Z1
Z12
Z5
(1)
“NRWW – No Read-While-Write Section” on page 203
Description
Most significant bit in the Program Counter.
(The Program Counter is 12 bits PC[11:0])
Most significant bit which is used to address the
words within one page (32 words in a page
requires 5 bits PC [4:0])
Bit in Z-register that is mapped to PCMSB.
Because Z0 is not used, the ZPCMSB equals
PCMSB + 1
Bit in Z-register that is mapped to PAGEMSB.
Because Z0 is not used, the ZPAGEMSB
equals PAGEMSB + 1
Program counter page address: Page select,
for page erase and page write
Program counter word address: Word select, for
filling temporary buffer (must be zero during
page write operation)
203.
Figure 103 on page 208
Pages
96
32
Address
0x000 - 0xBFF
0xC00 - 0xFFF
for details about the use of
and the Mapping
2486Z–AVR–02/11