Pin | Role
----+------
1   | RESET
2   | OD0
3   | OD1
4   | OD2
5   | OD3
6   | OD4
7   | VCC
8   | GND
9   | PP6
10  | PP7
11  | OD5
12  | OD6
13  | OD7
14  | PP0
15  | PP1
16  | PP2
17  | PP3
18  | PP4
19  | PP5
20  | VCC
21  | INT
22  | GND
23  | AD0
24  | AD1
25  | N/C
26  | N/C
27  | SDA
28  | SCL

PDIP28 Pin | Name    | Role
-----------+---------+------
1          |  PC6    | RESET
2          |  PD0    | OD0
3          |  PD1    | OD1
4          |  PD2    | OD2
5          |  PD3    | OD3
6          |  PD4    | OD4
7          |  VCC    | VCC
8          |  GND    | GND
9          |  PB6    | PP6
10         |  PB7    | PP7
11         |  PD5    | OD5
12         |  PD6    | OD6
13         |  PD7    | OD7
14         |  PB0    | PP0
15         |  PB1    | PP1
16         |  PB2    | PP2
17         |  PB3    | PP3
18         |  PB4    | PP4
19         |  PB5    | PP5
20         |  AVCC   | VCC
21         |  PC7    | INT
22         |  GND    | GND
23         |  PC0    | AD0
24         |  PC1    | AD1
25         |  PC2    | N/C
26         |  PC3    | N/C
27         |  PC4    | SDA
28         |  PC5    | SCL

Add the Atmel pin names to the mapping table
Add the Atmel pin names to the mapping table

Since the ATtiny 48/88 come in a variety of packages with different pin numberings, add the Atmel pin designators for ease of layout