AVR pin	AVR func.	Bus pin	Bus func.	Notes
1	PB0,XCK,T0	35	/R	
2	PB1,T1	33	/W
3	PB2,INT2,AIN0
4	PB3,OC0,AIN1	30	PWM0	New in AVR version
5	PB4,/SS	13	ADDR0
6	PB5,MOSI	11	ADDR1
7	PB6,MISO	7	ADDR2
8	PB7,SCK	5	ADDR3
9	/RESET
10	Vcc	17	+5V
11	Gnd	19	Gnd
12	XTAL2
13	XTAL1
14	PD0,RXD
15	PD1,TXD
16	PD2,INT0
17	PD3,INT1
18	PD4,OC1B	34	PWM2
19	PD5,OC1A	32	PWM1
20	PD6,ICP1
21	PD7,OC2	36	PWM3	New in AVR version
22	PC0,SCL	38	DATA0
23	PC1,SDA	40	DATA1
24	PC2,TCK	39	DATA2
25	PC3,TMS	37	DATA3
26	PC4,TDO	27	DATA4
27	PC5,TDI	25	DATA5
28	PC6,TOSC1	23	DATA6
29	PC7,TOSC2	21	DATA7
30	AVcc
31	Gnd	19	Gnd
32	AREF
33	PA7,ADC7	20	ADC7
34	PA6,ADC6	18	ADC6
35	PA5,ADC5	16	ADC5
36	PA4,ADC4	14	ADC4
37	PA3,ADC3	10	ADC3
38	PA2,ADC2	8	ADC2
39	PA1,ADC1	6	ADC1
40	PA0,ADC0	4	ADC0