ATMEGA168-20MI Atmel, ATMEGA168-20MI Datasheet - Page 60
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ATMEGA168-20MI
Manufacturer Part Number
ATMEGA168-20MI
Description
IC AVR MCU 16K 20MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA168-20MI
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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11.4
Table 11-4.
60
VectorNo.
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 ATmega168
ATmega48/88/168
Reset and Interrupt Vectors in ATmega168
Address
Program
0x0000
0x000C
0x001C
0x002C
0x0002
0x0004
0x0006
0x0008
0x000A
0x000E
0x0010
0x0012
0x0014
0x0016
0x0018
0x001A
0x001E
0x0020
0x0022
0x0024
0x0026
0x0028
0x002A
0x002E
0x0030
0x0032
(1)
(2)
Notes:
0xC1B
0xC1C
0xC1D
0xC1E
0xC1F
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
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at
reset, see
ATmega168” on page
“Boot Loader Support – Read-While-Write Self-Programming, ATmega88 and
out
ldi
out
sei
<instr>
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
SPH,r16
r16,low(RAMEND)
SPL,r16
268.
xxx
; Set Stack Pointer to top of RAM
; Enable interrupts
2545S–AVR–07/10
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