ATmega165P Atmel Corporation, ATmega165P Datasheet - Page 53

• Manufacturer Part Number: ATmega165P
• Manufacturer: Atmel Corporation

Specifications of ATmega165P

• Flash (kbytes): 16 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• 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): 1
• Eeprom (bytes): 512
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8019K–AVR–11/10
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 10-2.
Note:
The most typical and general program setup for the Reset and Interrupt Vector Addresses in
ATmega165P is:
BOOTRST
Address Labels Code
0x0000
0x0002
0x0004
0x0006
0x0008
0x000A
0x000C
0x000E
0x0010
0x0012
0x0014
0x0016
0x0018
0x001A
0x001C
0x001E
0x0020
0x0022
0x0024
0x0026
0x0028
0x002A
;
0x002C
0x002D
0x002E
0x002F
0x0030
0x0031
...
1
1
0
0
1. The Boot Reset Address is shown in
means unprogrammed while “0” means programmed.
RESET: ldi
Reset and Interrupt Vectors Placement
...
IVSEL
0
1
0
1
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
out
ldi
out
sei
<instr>
...
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_DRE
USART_TXC
USI_STRT
USI_OVFL
ANA_COMP
ADC
EE_RDY
SPM_RDY
r16, high(RAMEND); Main program start
SPH,r16
r16, low(RAMEND)
SPL,r16
xxx
Table 24-6 on page
Comments
; Reset Handler
; IRQ0 Handler
; PCINT0 Handler
; PCINT0 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
; USART RX Complete Handler
; USART0,UDR0 Empty Handler
; USART0 TX Complete Handler
; USI Start Condition Handler
; USI Overflow Handler
; Analog Comparator Handler
; ADC Conversion Complete Handler
; EEPROM Ready Handler
; SPM Ready Handler
; Enable interrupts
Set Stack Pointer to top of RAM
(1)
0x0002
Interrupt Vectors Start Address
Boot Reset Address + 0x0002
0x0002
Boot Reset Address + 0x0002
262. For the BOOTRST Fuse “1”
ATmega165P
53