ATMEGA325A-AUR Atmel, ATMEGA325A-AUR Datasheet - Page 674
![IC MCU AVR 32K FLASH 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA325A-AUR
Manufacturer Part Number
ATMEGA325A-AUR
Description
IC MCU AVR 32K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA325A-AUR
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-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number
Manufacturer
Quantity
Price
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ii
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/645
9
10 System Control and Reset .................................................................... 46
11 Interrupts ................................................................................................ 55
12 External Interrupts ................................................................................. 62
13 I/O-Ports .................................................................................................. 68
Power Management and Sleep Modes ................................................. 39
8.4Calibrated Internal RC Oscillator .............................................................................31
8.5Crystal Oscillator .....................................................................................................32
8.6Low-frequency Crystal Oscillator .............................................................................33
8.7External Clock .........................................................................................................35
8.8Timer/Counter Oscillator .........................................................................................36
8.9Clock Output Buffer .................................................................................................36
8.10System Clock Prescaler ........................................................................................36
8.11Register Description ..............................................................................................37
9.1Overview .................................................................................................................39
9.2Sleep Modes ...........................................................................................................39
9.3BOD Disable
9.4Idle Mode .................................................................................................................40
9.5ADC Noise Reduction Mode ...................................................................................40
9.6Power-down Mode ..................................................................................................40
9.7Power-save Mode ...................................................................................................41
9.8Standby Mode .........................................................................................................41
9.9Power Reduction Register .......................................................................................41
9.10Minimizing Power Consumption ............................................................................41
9.11Register Description ..............................................................................................44
10.1Resetting the AVR .................................................................................................46
10.2Reset Sources .......................................................................................................46
10.3Internal Voltage Reference ....................................................................................50
10.4Watchdog Timer ....................................................................................................50
10.5Register Description ..............................................................................................53
11.1Interrupt Vectors ....................................................................................................55
11.2Moving Interrupts Between Application and Boot Space ......................................60
11.3Register Description ..............................................................................................61
12.1Pin Change Interrupt Timing .................................................................................62
12.2Register Description ..............................................................................................64
(1)
.........................................................................................................39
8285B–AVR–03/11
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