ATmega168P Atmel Corporation, ATmega168P Datasheet - Page 60

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ATmega168P

Manufacturer Part Number
ATmega168P
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega168P

Flash (kbytes)
16 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
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
Yes
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
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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12.2
Table 12-2.
Notes:
60
Vector No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
7
8
9
Interrupt Vectors in ATmega88P
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at reset, see
2. When the IVSEL bit in MCUCR is set, Interrupt Vectors will be moved to the start of the Boot Flash Section. The address of
ATmega48P/88P/168P
port – Read-While-Write Self-Programming, ATmega88P and ATmega168P” on page
each Interrupt Vector will then be the address in this table added to the start address of the Boot Flash Section.
Reset and Interrupt Vectors in ATmega88P
Address
Program
0x000
0x00C
0x00D
0x00A
0x00B
0x00E
0x00F
0x001
0x002
0x003
0x004
0x005
0x006
0x007
0x008
0x009
0x010
0x011
0x012
0x013
0x014
0x015
0x016
0x017
0x018
0x019
(1)
(2)
Table 12-3 on page 61
tions of 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.
Source
RESET
INT0
INT1
PCINT0
PCINT1
PCINT2
WDT
TIMER2 COMPA
TIMER2 COMPB
TIMER2 OVF
TIMER1 CAPT
TIMER1 COMPA
TIMER1 COMPB
TIMER1 OVF
TIMER0 COMPA
TIMER0 COMPB
TIMER0 OVF
SPI, STC
USART, RX
USART, UDRE
USART, TX
ADC
EE READY
ANALOG COMP
TWI
SPM READY
shows reset and Interrupt Vectors placement for the various combina-
Interrupt Definition
External Pin, Power-on Reset, Brown-out Reset and Watchdog System Reset
External Interrupt Request 0
External Interrupt Request 1
Pin Change Interrupt Request 0
Pin Change Interrupt Request 1
Pin Change Interrupt Request 2
Watchdog Time-out Interrupt
Timer/Counter2 Compare Match A
Timer/Counter2 Compare Match B
Timer/Counter2 Overflow
Timer/Counter1 Capture Event
Timer/Counter1 Compare Match A
Timer/Coutner1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter0 Compare Match A
Timer/Counter0 Compare Match B
Timer/Counter0 Overflow
SPI Serial Transfer Complete
USART Rx Complete
USART, Data Register Empty
USART, Tx Complete
ADC Conversion Complete
EEPROM Ready
Analog Comparator
2-wire Serial Interface
Store Program Memory Ready
275.
”Boot Loader Sup-
8025M–AVR–6/11

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