Compare Arduino board specs
This table shows a quick comparison between the characteristics of all the Arduino and Genuino boards.
|
Name
|
Processor
|
Operating/Input
Voltage |
CPU Speed
|
Analog In/Out
|
Digital IO/PWM
|
EEPROM [kB]
|
SRAM [kB]
|
Flash [kB]
|
USB
|
UART
|
|
Intel® Curie
|
3.3 V/ 7-12V
|
32MHz
|
6/0
|
14/4
|
-
|
24
|
196
|
Regular
|
-
|
|
|
ATtiny85
|
3.3 V / 4-16 V
|
8 MHz
|
1/0
|
3/2
|
0.5
|
0.5
|
8
|
Micro
|
0
|
|
|
ATmega168V
ATmega328P |
2.7-5.5 V /
2.7-5.5 V |
8MHz
|
6/0
|
14/6
|
0.512
|
1
|
16
|
-
|
-
|
|
|
ATmega328P
|
2.7-5.5 V /
2.7-5.5 V |
8 MHz
|
4/0
|
9/4
|
1
|
2
|
32
|
-
|
-
|
|
|
ATmega32U4
|
3.3 V / 3.8-5 V
|
8 MHz
|
4/0
|
9/4
|
1
|
2.5
|
32
|
Micro
|
-
|
|
|
ATmega2560
|
5 V / 7-12 V
|
16 MHz
|
16/0
|
54/15
|
4
|
8
|
256
|
Regular
|
4
|
|
|
ATmega32U4
|
5 V / 7-12 V
|
16 MHz
|
12/0
|
20/7
|
1
|
2.5
|
32
|
Micro
|
1
|
|
|
SAMD21 Cortex-M0+
|
3.3 V/ 5V
|
48MHz
|
7/1
|
8/4
|
-
|
32
|
256
|
Micro
|
1
|
|
|
ATmega168
ATmega328P |
3.3 V / 3.35-12 V
5 V / 5-12 V |
8 MHz
16 MHz |
6/0
|
14/6
|
0.512
1 |
1
2 |
16
32 |
-
|
1
|
|
|
ATmega328P
|
3.3 V / 3.35-12 V
5 V / 5-12 V |
8 MHz
16 MHz |
6/0
|
14/6
|
1
|
2
|
32
|
-
|
1
|
|
|
ATmega328P
|
5 V / 7-12 V
|
16 MHz
|
6/0
|
14/6
|
1
|
2
|
32
|
Regular
|
1
|
|
|
ATSAMD21G18
|
3.3 V / 7-12 V
|
48 MHz
|
6/1
|
14/10
|
-
|
32
|
256
|
2 Micro
|
2
|
|
|
ATSAM3X8E
|
3.3 V / 7-12 V
|
84 MHz
|
12/2
|
54/12
|
-
|
96
|
512
|
2 Micro
|
4
|
|
|
ATmega32U4
|
5 V / 7-12 V
|
16 MHz
|
-
|
-
|
1
|
2.5
|
32
|
Micro
|
-
|
|
|
ATmega328P
|
5 V / 7-12 V
|
16 MHz
|
6/0
|
14/4
|
1
|
2
|
32
|
Regular
|
-
|
|
|
ATmega32U4
|
5 V / 7-12 V
|
16 MHz
|
12/0
|
20/7
|
1
|
2.5
|
32
|
Micro
|
1
|
|
|
ATmega2560
|
5 V / 7-12 V
|
16 MHz
|
16/0
|
54/15
|
4
|
8
|
256
|
Regular
|
4
|
|
|
ATmega328P
|
5 V / 7-9 V
|
16 MHz
|
8/0
|
14/6
|
1
|
2
|
32
|
-
|
-
|
|
|
ATmega168
ATmega328P |
5 V / 7-9 V
|
16 MHz
|
8/0
|
14/6
|
0.512
1 |
1
2 |
16
32 |
Mini
|
1
|
|
|
ATmega32U4
AR9331 Linux |
5 V
|
16 MHz
400MHz |
12/0
|
20/7
|
1
|
2.5
16MB |
32
64MB |
Micro
|
1
|
|
|
ATmega32u4
|
5 V
|
16 MHz
|
6/0
|
20/6
|
1 KB (ATmega32u4)/
512 Kbit (I2C) |
2.5 KB
(ATmega32u4) |
32 KB (ATmega32u4) of which
4 KB used by bootloader |
1
|
1
|
|
|
SAMD21
Cortex-M0+ 32bit low power ARM MCU |
3.3 V
|
48 MHz
|
7 (ADC 8/10/12 bit)/1
(DAC 10 bit) |
22/12
|
No
|
32 KB
|
256 KB
|
1
|
1
|
Arduino Retired boards specs
|
Name
|
Processor
|
Operating/Input
Voltage |
CPU Speed
|
Analog In/Out
|
Digital IO/PWM
|
EEPROM [kB]
|
SRAM [kB]
|
Flash [kB]
|
USB
|
UART
|
|
ATmega328P
|
5 V / 2.5-12 V
|
16 MHz
|
6/0
|
14/6
|
1
|
2
|
32
|
-
|
1
|
|
|
ATmega328P
|
3.3 V / 3.7-7 V
|
8 MHz
|
8/0
|
14/6
|
1
|
2
|
32
|
Mini
|
1
|