ATMEGA8L-8PJ Atmel, ATMEGA8L-8PJ Datasheet - Page 204
ATMEGA8L-8PJ
Manufacturer Part Number
ATMEGA8L-8PJ
Description
IC MCU AVR 8K 5V 8MHZ 28-DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8L-8PJ
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 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Boot Loader Lock
Bits
204
ATmega8(L)
Figure 102. Memory Sections
Note:
If no Boot Loader capability is needed, the entire Flash is available for application code. The
Boot Loader has two separate sets of Boot Lock Bits which can be set independently. This gives
the user a unique flexibility to select different levels of protection.
The user can select:
•
•
•
•
See
be set in software and in Serial or Parallel Programming mode, but they can be cleared by a chip
erase command only. The general Write Lock (Lock bit mode 2) does not control the program-
ming of the Flash memory by SPM instruction. Similarly, the general Read/Write Lock (Lock bit
mode 3) does not control reading nor writing by LPM/SPM, if it is attempted.
To protect the entire Flash from a software update by the MCU
To protect only the Boot Loader Flash section from a software update by the MCU
To protect only the Application Flash section from a software update by the MCU
Allow software update in the entire Flash
Table 78 on page 205
1. The parameters in the figure are given in
Boot Loader Flash Section
Boot Loader Flash Section
Application Flash Section
Application Flash Section
Application Flash Section
Application Flash Section
Program Memory
Program Memory
BOOTSZ = '11'
BOOTSZ = '01'
and
(1)
Table 79 on page 205
$0000
End RWW
Start NRWW
End Application
Start Boot Loader
Flashend
$0000
End RWW
Start NRWW
End Application
Start Boot Loader
Flashend
Table 82 on page 213
Boot Loader Flash Section
Boot Loader Flash Section
Application Flash Section
Application Flash Section
for further details. The Boot Lock Bits can
Application flash Section
Program Memory
Program Memory
BOOTSZ = '10'
BOOTSZ = '00'
$0000
End RWW
Start NRWW
End Application
Start Boot Loader
Flashend
$0000
End RWW, End Application
Start NRWW, Start Boot Loader
Flashend
2486Z–AVR–02/11
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