ATMEGA325A-MU Atmel, ATMEGA325A-MU Datasheet - Page 55

• Manufacturer Part Number: ATMEGA325A-MU
• Description: IC MCU AVR 32K FLASH 64VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA325A-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11. Interrupts
11.1
8285B–AVR–03/11
Interrupt Vectors
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
T h i s s e c t i o n d e s c r i b e s t h e s p e c i f i c s o f t h e i n t e r r u p t h a n d l i n g a s p e r f o r m e d i n
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P. For a general
explanation of the AVR interrupt handling, refer to
Table 11-1.
Notes:
Vector
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1
2
3
4
5
6
7
8
9
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader address at
reset, see
Address
Program
0x0000
0x000C
0x001C
0x002C
0x0002
0x0004
0x0006
0x0008
0x000A
0x000E
0x0010
0x0012
0x0016
0x001A
0x001E
0x0020
0x0022
0x0026
0x002A
0x002E
0x0030
0x0014
0x0018
0x0024
0x0028
Reset and Interrupt Vectors
(1)
(2)
”Boot Loader Support – Read-While-Write Self-Programming” on page
Source
RESET
INT0
PCINT0
PCINT1
TIMER2 COMP
TIMER2 OVF
TIMER1 CAPT
TIMER1 COMPA
TIMER1 COMPB
TIMER1 OVF
TIMER0 COMP
TIMER0 OVF
SPI, STC
USART, RX
USART, UDREn
USART, TX
USI START
USI OVERFLOW
ANALOG COMP
ADC
EE READY
SPM READY
NOT_USED
PCINT2
PCINT3
Interrupt Definition
External Pin, Power-on Reset, Brown-out Reset,
Watchdog Reset, and JTAG AVR Reset
External Interrupt Request 0
Pin Change Interrupt Request 0
Pin Change Interrupt Request 1
Timer/Counter2 Compare Match
Timer/Counter2 Overflow
Timer/Counter1 Capture Event
Timer/Counter1 Compare Match A
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter0 Compare Match
Timer/Counter0 Overflow
SPI Serial Transfer Complete
USART0, Rx Complete
USART0 Data Register Empty
USART0, Tx Complete
USI Start Condition
USI Overflow
Analog Comparator
ADC Conversion Complete
EEPROM Ready
Store Program Memory Ready
RESERVED
Pin Change Interrupt Request 2
Pin Change Interrupt Request 3
”Reset and Interrupt Handling” on page
266.
16.
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