Device
Flash (Kbytes)
EEPROM (Kbytes)
SRAM (Bytes)
Max I/O Pins
F.max (MHz)
Vcc (V)
16-bit Timers
8-bit Timer
PWM (channels)
RTC
SPI
UART
TWI
ISP
10-bit A/D (channels)
Analog Comparator
Brown Out Detector
Watchdog
On Chip Oscillator
Hardware Multiplier
Interrupts
Ext Interrupts
Self Program Memory
Packages
Green Packages
AT90CAN128 Automotive
128
4
4096
53
16
2.7-5.5
2
2
8
Yes
Yes
2
--
Yes
8
Yes
Yes
Yes
Yes
Yes
34
8
Yes
MLF 64 LQFP 64
MLF 64
MLF 64 LQFP 64
AT90PWM1
8
0.5
512
19
16
2.7-5.5
1
1
7
Yes
1
No
--
Yes
8
Yes
Yes
Yes
Yes
Yes
--
4
Yes
Narrow SOIC 24
Narrow SOIC 24
AT90PWM2
8
0.5
512
19
16
2.7-5.5
1
1
7
Yes
1
Yes
--
Yes
8
Yes
Yes
Yes
Yes
Yes
--
4
Yes
Narrow SOIC 24
Narrow SOIC 24
AT90PWM3
8
0.5
512
27
16
2.7-5.5
1
1
10
Yes
1
Yes
--
Yes
11
Yes
Yes
Yes
Yes
Yes
--
4
Yes
MLF 32
MLF 32 Narrow SOIC 32
ATmega128
128
4
4096
53
16
2.7-5.5
2
2
8
Yes
1
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
34
8
Yes
MLF 64
MLF 64 TQFP 64
ATmega1280
128
4
8192
86
16
1.8-5.5
4
2
16
Yes
1+USART
4
Yes
Yes
16
Yes
Yes
Yes
Yes
Yes
57
32
Yes
TQFP 100 CBGA 100
TQFP 100
ATmega1281
128
4
8192
54
16
1.8-5.5
4
2
9
Yes
1+USART
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
48
17
Yes
MLF 64 TQFP 64
MLF 64
ATmega128RZA
128
4
8192
54
16
1.8-5.5
4
2
9
Yes
1+USART
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
48
17
Yes
MLF 64 TQFP 64
MLF 64
ATmega128RZB
128
4
8192
86
16
1.8-5.5
4
2
16
Yes
1+USART
4
Yes
Yes
16
Yes
Yes
Yes
Yes
Yes
57
32
Yes
TQFP 100
TQFP 100
ATmega16
16
0.5
1024
32
16
2.7-5.5
1
2
4
Yes
1
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
20
3
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega162
16
0.5
1024
35
16
1.8-5.5
2
2
6
Yes
1
2
--
Yes
--
Yes
Yes
Yes
Yes
Yes
28
3
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega164P
16
0.512
1024
32
20
1.8-5.5
1
2
6
Yes
1+USART
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
31
32
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega165
16
0.5
1024
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
23
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega165P
16
0.5
1024
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
23
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega168
16
0.5
1024
23
20
1.8-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
26
26
Yes
MLF 32
MLF 32 PDIP 28 TQFP 32
ATmega168 Automotive
16
0.512
1024
23
16
2.7-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
26
26
Yes
MLF 32
MLF 32 TQFP 32
ATmega169
16
0.5
1024
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
23
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega169P
16
0.5
1024
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
23
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega2560
256
4
8192
86
16
1.8-5.5
4
2
16
Yes
1+USART
4
Yes
Yes
16
Yes
Yes
Yes
Yes
Yes
57
32
Yes
CBGA 100
TQFP 100
TQFP 100
ATmega2561
256
4
8192
54
16
1.8-5.5
4
2
9
Yes
1+USART
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
48
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega256RZA
256
4
8192
54
16
1.8-5.5
4
2
9
Yes
1+USART
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
48
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega256RZB
256
4
8192
86
16
1.8-5.5
4
2
16
Yes
1+USART
4
Yes
Yes
16
Yes
Yes
Yes
Yes
Yes
57
32
Yes
TQFP 100
TQFP 100
ATmega32
32
1
2048
32
16
2.7-5.5
1
2
4
Yes
1
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
19
3
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega324P
32
1
2048
32
20
1.8-5.5
1
2
6
Yes
1+USART
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
31
32
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega325
32
1
2048
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
23
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega3250
32
1
2048
69
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
32
17
Yes
MLF 64
MLF 64
TQFP 64 TQFP 100
ATmega329
32
1
2048
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
25
17
Yes
MLF 64
MLF 64 TQFP 64 TQFP 100
ATmega3290
32
1
2048
69
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
25
32
Yes
MLF 64
MLF 64
TQFP 64 TQFP 100
ATmega406
40
0.512
2048
18
1
4-25
1
1
1
Yes
--
--
Yes
Yes
--
Yes
Yes
Yes
Yes
Yes
23
4
Yes
LQFP 48
LQFP 48
ATmega48
4
0.256
512
23
20
1.8-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
26
26
Yes
MLF 32
MLF 32 PDIP 28 TQFP 32
ATmega48 Automotive
4
0.256
512
23
16
2.7-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
26
26
Yes
MLF 32
MLF 32 TQFP 32
ATmega64
64
2
4096
54
16
2.7-5.5
2
2
8
Yes
1
2
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
34
8
Yes
MLF 64
MLF 64 TQFP 64
ATmega640
64
4
8192
86
16
1.8-5.5
4
2
16
Yes
1+USART
4
Yes
Yes
16
Yes
Yes
Yes
Yes
Yes
57
32
Yes
TQFP 100 CBGA 100
TQFP 100
ATmega644
64
2
4096
32
20
1.8-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
31
32
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega644P
64
2
4096
32
20
1.8-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
31
32
Yes
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega645
64
2
4096
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
23
17
Yes
MLF 64
MLF 64 TQFP 64
ATmega6450
64
2
4096
69
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
32
17
Yes
MLF 64
MLF 64
TQFP 64 TQFP 100
ATmega649
64
2
4096
54
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
25
17
Yes
MLF 64
MLF 64 TQFP 64 TQFP 100
ATmega6490
64
2
4096
69
16
1.8-5.5
1
2
4
Yes
1+USI
1
USI
Yes
8
Yes
Yes
Yes
Yes
Yes
25
32
Yes
MLF 64
MLF 64
TQFP 64 TQFP 100
ATmega64RZA
64
2
4096
32
20
1.8-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
31
32
Yes
MLF 44
MLF 44 PDIP 42 TQFP 44
ATmega8
8
0.5
1024
23
16
2.7-5.5
1
2
3
Yes
1
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
18
2
Yes
MLF 32
MLF 32 PDIP 28 TQFP 32
ATmega8515
8
0.5
512
35
16
2.7-5.5
1
1
3
--
1
1
--
Yes
--
--
Yes
Yes
Yes
Yes
16
3
Yes
PLCC 44
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega8535
8
0.5
512
32
16
2.7-5.5
1
2
4
--
1
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
20
3
Yes
PLCC 44
MLF 44
MLF 44 PDIP 40 TQFP 44
ATmega88
8
0.5
1024
23
20
1.8-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
26
26
Yes
MLF 32
MLF 32 PDIP 28 TQFP 32
ATmega88 Automotive
8
0.512
1024
23
16
2.7-5.5
1
2
6
Yes
1+USART
1
Yes
Yes
8
Yes
Yes
Yes
Yes
Yes
26
26
Yes
MLF 32
MLF 32 TQFP 32
ATtiny11
1
--
--
6
6
2.7-5.5
--
1
--
--
--
--
--
--
--
Yes
--
Yes
Yes
--
4
1
--
PDIP 8
PDIP 8 SOIC (EIAJ) 8
ATtiny12
1
0.064
--
6
8
1.8-5.5
--
1
--
--
--
--
--
Yes
--
Yes
Yes
Yes
Yes
--
5
1
--
PDIP 8
PDIP 8 SOIC (EIAJ) 8
ATtiny13
1
0.064
64B + 32 reg
6
20
1.8-5.5
--
1
2
--
--
--
--
Yes
4
Yes
Yes
Yes
Yes
No
9
6
Yes
PDIP 8
PDIP 8 SOIC 8 SOIC (EIAJ) 8 MLF 20
ATtiny15L
1
0.0625
--
6
1.6
2.7-5.5
--
2
1
--
--
--
--
Yes
4
Yes
Yes
Yes
Yes
--
8
1(+5)
--
PDIP 8 SOIC (208mil) 8
PDIP 8
ATtiny2313
2
0.128
128
18
20
1.8-5.5
1
1
4
--
USI
1
USI
Yes
--
Yes
Yes
Yes
Yes
--
8
2
Yes
PDIP 20
PDIP 20 SOIC 20 MLF 20
ATtiny24
2
0.128
128
12
20
1.8-5.5
1
1
4
--
USI
--
USI
Yes
8
Yes
Yes
Yes
Yes
--
17
12
Yes
SOIC 14
SOIC 14 MLF 20 PDIP 14
ATtiny25
2
0.128
128
6
20
1.8-5.5
--
2
4
--
USI
--
USI
Yes
4
Yes
Yes
Yes
Yes
--
15
7
Yes
PDIP 8
PDIP 8 SOIC (208mil) 8 MLF 20
ATtiny25 Automotive
2
0.128
128
6
16
2.7-5.5
--
2
4
--
USI
--
USI
Yes
4
Yes
Yes
Yes
Yes
--
15
7
Yes
SOIC (208mil) 8
SOIC (208mil) 8
ATtiny26
2
0.125
128
16
16
2.7-5.5
--
2
2
--
USI
--
USI
Yes
11
Yes
Yes
Yes
Yes
--
11
1
--
MLF 32
MLF 32 PDIP 20 SOIC 20
ATtiny261
2
0.128
128
16
20
1.8 - 5.5
1
2
2
--
Yes
--
USI
Yes
11
Yes
Yes
Yes
Yes
--
19
2
Yes
MLF 32
MLF 32 PDIP 20 SOIC 20
ATtiny28L
2
--
32
11
4
1.8-5.5
--
1
--
--
--
--
--
--
--
Yes
--
Yes
Yes
--
5
2(+8)
--
MLF 32 PDIP 28 TQFP 32
MLF 32
ATtiny44
4
0.256
256
12
20
1.8-5.5
1
1
4
--
USI
--
USI
Yes
8
Yes
Yes
Yes
Yes
--
17
12
Yes
SOIC 14
SOIC 14 MLF 20 PDIP 14
ATtiny45
4
0.256
256
6
20
1.8-5.5
--
2
4
--
USI
--
USI
Yes
4
Yes
Yes
Yes
Yes
--
15
7
Yes
PDIP 8
PDIP 8 SOIC (208mil) 8 MLF 20
ATtiny45 Automotive
2
0.256
256
6
16
2.7-5.5
--
2
4
--
USI
--
USI
Yes
4
Yes
Yes
Yes
Yes
--
15
7
Yes
SOIC (208mil) 8
SOIC (208mil) 8
ATtiny461
4
0.256
256
16
20
1.8 - 5.5
1
2
2
--
Yes
--
USI
Yes
11
Yes
Yes
Yes
Yes
--
19
2
Yes
MLF 32
MLF 32 PDIP 20 SOIC 20
ATtiny84
8
0.512
512
12
20
1.8-5.5
1
1
4
--
USI
--
USI
Yes
8
Yes
Yes
Yes
Yes
--
17
12
Yes
SOIC 14
SOIC 14 MLF 20 PDIP 14
ATtiny85
8
0.512
512
6
20
1.8-5.5
--
2
4
--
USI
--
USI
Yes
4
Yes
Yes
Yes
Yes
--
15
7
Yes
PDIP 8
PDIP 8 SOIC (208mil) 8 MLF 20
ATtiny85 Automotive
8
0.512
512
6
16
2.7-5.5
--
2
4
--
USI
--
USI
Yes
4
Yes
Yes
Yes
Yes
--
15
7
Yes
SOIC (208mil) 8
SOIC (208mil) 8
ATtiny861
8
0.512
512
16
20
1.8 - 5.5
1
2
2
--
Yes
--
USI
Yes
11
Yes
Yes
Yes
Yes
--
19
2
Yes
MLF 32
MLF 32 PDIP 20 SOIC 20