ATmega1284P Atmel Corporation, ATmega1284P Datasheet - Page 62
ATmega1284P
Manufacturer Part Number
ATmega1284P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega1284P
Flash (kbytes)
128 Kbytes
Pin Count
44
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
32
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
3
Twi (i2c)
1
Uart
2
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)
16
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
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
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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8272C–AVR–06/11
Table 12-1.
Notes:
Table 12-2
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 12-2.
Note:
Vector
BOOTRST
No.
28
29
30
31
32
33
34
35
1
1
0
0
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at
2. When the IVSEL bit in MCUCR is set, Interrupt Vectors will be moved to the start of the Boot
3. Applies only to ATmega1284P.
1. The Boot Reset Address is shown in
$0036
$0038
$003A
$003C
$003E
$0040
$0042
$0044
reset, see
Flash Section. The address of each Interrupt Vector will then be the address in this table
added to the start address of the Boot Flash Section.
means unprogrammed while “0” means programmed.
Address
Program
shows reset and Interrupt Vectors placement for the various combinations of
ATmega164A/PA/324A/PA/644A/PA/1284/P
Reset and Interrupt Vectors (Continued)
Reset and Interrupt Vectors Placement
IVSEL
(2)
”Memory Programming” on page
0
1
0
1
Source
SPM_READY
USART1_RX
USART1_UDRE
USART1_TX
TIMER3_CAPT
TIMER3_COMPA
TIMER3_COMPB
TIMER3_OVF
Reset Address
0x0000
0x0000
Boot Reset Address
Boot Reset Address
(3)
(3)
(3)
(3)
Table 26-10 on page
Interrupt Definition
Store Program Memory Ready
USART1 Rx Complete
Timer/Counter3 Capture Event
Timer/Counter3 Compare Match A
Timer/Counter3 Compare Match B
Timer/Counter3 Overflow
USART1 Data Register Empty
USART1 Tx Complete
297.
(1)
Interrupt Vectors Start Address
0x0002
Boot Reset Address + 0x0002
0x0002
Boot Reset Address + 0x0002
292. For the BOOTRST Fuse “1”
62
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