Port A
Bit No.

Bit 7

Bit 6

Bit 5

Bit 4
RA4

Bit 3
RA3

Bit 2
RA2

Bit 1
RA1

Bit 0
RA0

Power of 2

128

64

32

16

8

4

2

1

HEX value

0x80

0x40

0x20

0x10

0x08

0x04

0x02

0x01

N/C

N/C

N/C

PIN 3

PIN 2

PIN 1

PIN 18

PIN 17

Port B
Bit No.

Bit 7
RB7

Bit 6
RB6

Bit 5
RB5

Bit 4
RB4

Bit 3
RB3

Bit 2
RB2

Bit 1
RB1

Bit 0
RB0

Power of 2

128

64

32

16

8

4

2

1

HEX value

0x80

0x40

0x20

0x10

0x08

0x04

0x02

0z01

PIN 13

PIN 12

PIN 11

PIN 10

PIN 9

PIN 8

PIN 7

PIN 6