External Connectors - Atmel AT89C5131A Hardware User's Manual

Hardware Description
2.5 External
Connectors
2-8
4245A–USB–11/04
These two external connectors to build a customer extended board easily.
Figure 2-7. Top View of J5 and J6 Connectors
J5
48 47
P1.0
45
46
P1.1
44 43
P1.2
41
42
P1.3
40 39
P1.4
37
38
P1.5
36 35
P1.6
34 33
P1.7
31
32
P3.0
30 29
P3.1
27
28
P3.2
26 25
P3.3
23
24
P3.4
22 21
P3.5
20 19
P3.6 - WR
18 17
P3.7 - RD
16 15
NC
14 13
NC
12 11
NC
10 9
NC
8 7
NC
5
6
NC
4 3
NC
1
2
NC
VCC
VSS
SDA
SCL
NC
RESET
EA
BP1
A16
NC
VSS
XTAL2
VSS
NC
NC
NC
NC
NC
NC
NC
NC
BUZZER
VSS
VSS
AT89C5131A Starter Kit Hardware User Guide
J6
48 47
4.35 12V P0.0
45
46
4.35 12V P0.1
44 43
VSS P0.2
41
42
NC P0.3
40 39
NC P0.4
37
38
NC P0.5
36 35
NC P0.6
34 33
NC P0.7
31
32
NC P2.0
30 29
NC P2.1
27
28
NC P2.2
26 25
PSEN P2.3
23
24
VSS P2.4
22 21
ALE P2.5
20 19
P1.0 - KBD 0 P2.6
18 17
P1.1 - KBD 1 P2.7
16 15
P1.2 - KBD 2 P4.0
14 13
P1.3 - KBD 3 P4.1
12 11
P1.4 - KBD 4 NC
10 9
P1.5 - KBD 5 NC
8 7
P1.6 - KBD 6 NC
5
6
P1.7 - KBD 7 NC
4 3
VSS NC
1
2
VSS NC