31
Pin No.
Name
I/O
INPUT
OUTPUT
I/O buffer
Comment
[V]
Current
1
D5
I/O
3.3
-4mA/4mA
5V tolerant
2
D6
I/O
3.3
-4mA/4mA
5V tolerant
3
Vss*
DGND
4
D7
I/O
3.3
-4mA/4mA
5V tolerant
5
A0
I
3.3
5V tolerant
6
V
DD
*
3.3
7
A1
I
3.3
5V tolerant
8
V
DD
5V*
5.0
9
A2
I
3.3
5V tolerant
10
A3
I
3.3
5V tolerant
11
A4
I
3.3
5V tolerant
12
A5
I
3.3
5V tolerant
13
A6
I
3.3
5V tolerant
14
A7
I
3.3
5V tolerant
15
Vss*
DGND
16
XWAIT
I/O
3.3
-4mA/4mA
5V tolerant
17
XRD
I
3.3
5V tolerant
18
XWR
I
3.3
5V tolerant
19
XCS
I
3.3
5V tolerant
20
XINT0
O
3.3
-8mA/8mA
21
XINT1
I/O
3.3
-8mA/8mA
5V tolerant
22
V
DD
*
3.3
23
XHRS
I
5.0
ATAPI PULL
UP
24
HDB7
I/O
5.0
-4mA/12mA
ATAPI
25
Vss*
DGND
26
HDB8
I/O
5.0
-4mA/12mA
ATAPI
27
HDB6
I/O
5.0
-4mA/12mA
ATAPI
28
V
DD
S*
5.0
29
HDB9
I/O
5.0
-4mA/12mA
ATAPI
30
HDB5
I/O
5.0
-4mA/12mA
ATAPI
31
HDBA
I/O
5.0
-4mA/12mA
ATAPI
32
HDB4
I/O
5.0
-4mA/12mA
ATAPI
33
Vss*
DGND
34
HDBB
I/O
5.0
-4mA/12mA
ATAPI
35
HDB3
I/O
5.0
-4mA/12mA
ATAPI
36
V
DD
*
3.3
37
HDBC
I/O
5.0
-4mA/12mA
ATAPI
38
V
DD
S*
5.0
39
HDB2
I/O
5.0
-4mA/12mA
ATAPI
40
HDBD
I/O
5.0
-4mA/12mA
ATAPI
41
HDB1
I/O
5.0
-4mA/12mA
ATAPI
42
Vss*
DGND
43
HDBE
I/O
5.0
-4mA/12mA
ATAPI
44
HDB0
I/O
5.0
-4mA/12mA
ATAPI
45
HDBF
I/O
5.0
-4mA/12mA
ATAPI
46
HDRQ
O
5.0
-4mA/12mA
ATAPI
47
V
DD
S*
5.0
48
XHWR
I/O
5.0
-4mA/12mA
ATAPI
49
XHRD
I/O
5.0
-4mA/12mA
ATAPI
50
V
DD
*
3.3