ATmega6490 Atmel Corporation, ATmega6490 Datasheet - Page 50
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ATmega6490
Manufacturer Part Number
ATmega6490
Description
Manufacturer
Atmel Corporation
Specifications of ATmega6490
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
69
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
160
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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ATmega329/3290/649/6490
Table 11-2
BOOTRST and IVSEL settings. If the program never enables an interrupt source, the Interrupt
Vectors are not used, and regular program code can be placed at these locations. This is also
the case if the Reset Vector is in the Application section while the Interrupt Vectors are in the
Boot section or vice versa.
Table 11-2.
Note:
The most typical and general program setup for the Reset and Interrupt Vector Addresses in
ATmega329/3290/649/6490 is:
BOOTRST
Addre
ss
0x000
0
0x000
2
0x000
4
0x000
6
0x000
8
0x000
A
0x000
C
0x000
E
0x001
0
0x001
2
0x001
4
0x001
6
0X001
8
0x001
A
0x001
C
0x001
E
0x002
0
1
1
0
0
1. The Boot Reset Address is shown in
means unprogrammed while “0” means programmed.
shows reset and Interrupt Vectors placement for the various combinations of
Label
s
Reset and Interrupt Vectors Placement
IVSEL
0
1
0
1
Code
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
Reset Address
0x0000
0x0000
Boot Reset Address
Boot Reset Address
RESET
EXT_INT0
PCINT0
PCINT1
TIM2_COMP
TIM2_OVF
TIM1_CAPT
TIM1_COMPA
TIM1_COMPB
TIM1_OVF
TIM0_COMP
TIM0_OVF
SPI_STC
USART_RXC
USART_UDRE
USART_TXC
USI_STRT
Table 26-6 on page
Interrupt Vectors Start Address
0x0002
Boot Reset Address + 0x0002
0x0002
Boot Reset Address + 0x0002
(1)
Comments
; Reset Handler
; IRQ0 Handler
; PCINT0 Handler
; PCINT1 Handler
; Timer2 Compare Handler
; Timer2 Overflow Handler
; Timer1 Capture Handler
; Timer1 CompareA Handler
; Timer1 CompareB Handler
; Timer1 Overflow Handler
; Timer0 Compare Handler
; Timer0 Overflow Handler
; SPI Transfer Complete Handler
; USART0 RX Complete Handler
; USART0,UDR0 Empty Handler
; USART0 TX Complete Handler
; USI Start Condition Handler
290. For the BOOTRST Fuse “1”
2552K–AVR–04/11
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