ATMEGA8A-MU Atmel, ATMEGA8A-MU Datasheet - Page 47

• Manufacturer Part Number: ATMEGA8A-MU
• Description: MCU AVR 8K FLASH 16MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8A-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• 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: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Controller Family/series: AVR MEGA
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 16MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• Processor Series: ATMEGA8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SPI, TWI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8159D–AVR–02/11
When the BOOTRST Fuse is unprogrammed, the boot section size set to 2K bytes and the
IVSEL bit in the GICR Register is set before any interrupts are enabled, the most typical and
general program setup for the Reset and Interrupt Vector Addresses is:
When the BOOTRST Fuse is programmed and the boot section size set to 2K bytes, the most
typical and general program setup for the Reset and Interrupt Vector Addresses is:
AddressLabels Code
$000
;
$001
$002
$003
$004
$005
$006
;
.org $c01
$c01
$c02
:.
$c12
AddressLabels Code
.org $001
$001
$002
:.
$012
;
.org $c00
$c00
;
$c01
$c02
$c03
$c04
$c05
$c06
RESET:ldi
RESET:ldi
rjmp
out
ldi
out
sei
<instr>
rjmp
rjmp
:.
rjmp
rjmp
rjmp
:.
rjmp
rjmp
out
ldi
out
sei
<instr>
RESET
r16,high(RAMEND); Main program start
SPH,r16
r16,low(RAMEND)
SPL,r16
EXT_INT0
EXT_INT1
:. ;
SPM_RDY
EXT_INT0
EXT_INT1
:.
SPM_RDY
RESET
r16,high(RAMEND); Main program start
SPH,r16
r16,low(RAMEND)
SPL,r16
xxx
xxx
; Enable interrupts
; IRQ0 Handler
; IRQ1 Handler
; Store Program Memory Ready Handler
Comments
; IRQ0 Handler
; IRQ1 Handler
;
; Store Program Memory Ready Handler
; Reset handler
; Set Stack Pointer to top of RAM
; Enable interrupts
Comments
; Reset handler
; Set Stack Pointer to top of RAM
ATmega8A
47