ATMEGA8-16PC Atmel, ATMEGA8-16PC Datasheet - Page 47

• Manufacturer Part Number: ATMEGA8-16PC
• Description: IC AVR MCU 8K 16MHZ COM 28-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8-16PC

• 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATMEGA816PC

2486Z–AVR–02/11
Table 19. Reset and Interrupt Vectors Placement
Note:
The most typical and general program setup for the Reset and Interrupt Vector Addresses in
ATmega8 is:
BOOTRST
addressLabels Code
$000
$001
$002
$003
$004
$005
$006
$007
$008
$009
$00a
$00b
$00c
$00d
$00e
$00f
$010
$011
$012
;
$013
$014
$015
$016
$017
$018
...
1
1
0
0
1. The Boot Reset Address is shown in
(1)
means unprogrammed while “0” means programmed
RESET: ldi
IVSEL
0
1
0
1
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
rjmp
out
ldi
out
sei
<instr>
...
Reset Address
0x000
0x000
Boot Reset Address
Boot Reset Address
RESET
EXT_INT0
EXT_INT1
TIM2_COMP
TIM2_OVF
TIM1_CAPT
TIM1_COMPA
TIM1_COMPB
TIM1_OVF
TIM0_OVF
SPI_STC
USART_RXC
USART_UDRE
USART_TXC
ADC
EE_RDY
ANA_COMP
TWSI
SPM_RDY
SPH,r16
r16,low(RAMEND)
SPL,r16
...
xxx
r16,high(RAMEND); Main program start
Comments
; Reset Handler
; IRQ0 Handler
; IRQ1 Handler
; Timer2 Compare Handler
; Timer2 Overflow Handler
; Timer1 Capture Handler
; Timer1 CompareA Handler
; Timer1 CompareB Handler
; Timer1 Overflow Handler
; Timer0 Overflow Handler
; SPI Transfer Complete Handler
; USART RX Complete Handler
; UDR Empty Handler
; USART TX Complete Handler
; ADC Conversion Complete Handler
; EEPROM Ready Handler
; Analog Comparator Handler
; Two-wire Serial Interface Handler
; Store Program Memory Ready Handler
; Set Stack Pointer to top of RAM
; Enable interrupts
Table 82 on page
Interrupt Vectors Start Address
0x001
Boot Reset Address + 0x001
0x001
Boot Reset Address + 0x001
213. For the BOOTRST Fuse “1”
ATmega8(L)
47