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80C186XL Datasheet, PDF (21/48 Pages) Intel Corporation – 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS
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80C186XL 80C188XL
Table 8 SQFP Pin Functions with Location
AD Bus
Bus Control
Processor Control
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8 (A8)
AD9 (A9)
AD10 (A10)
AD11 (A11)
AD12 (A12)
AD13 (A13)
AD14 (A14)
AD15 (A15)
A16 S3
A17 S4
A18 S5
A19 S6
1
ALE QS0
29
3
BHE (RFSH)
26
6
S0
40
8
S1
39
12
S2
38
14
RD QSMD
28
16
WR QS1
27
18
ARDY
37
2
SRDY
44
5
DEN
56
7
DT R
54
9
LOCK
45
13
HOLD
43
15
HLDA
42
17
19
21
No Connection
22
NC
4
23
NC
25
24
NC
35
NC
55
NC
72
NOTE
Pin names in parentheses apply to the 80C188XL
RES
73
RESET
34
X1
32
X2
33
CLKOUT
36
TEST BUSY
46
NMI
47
INT0
48
INT1 SELECT 49
INT2 INTA0
52
INT3 INTA1
53
Power and Ground
VCC
10
VCC
11
VCC
20
VCC
50
VCC
51
VCC
61
VSS
30
VSS
31
VSS
41
VSS
70
VSS
80
1 AD0
2 AD8 (A8)
3 AD1
4 NC
5 AD9 (A9)
6 AD2
7 AD10 (A10)
8 AD3
9 AD11 (A11)
10 VCC
11 VCC
12 AD4
13 AD12 (A12)
14 AD5
15 AD13 (A13)
16 AD6
17 AD14 (A14)
18 AD7
19 AD15 (A15)
20 VCC
Table 9 SQFP Pin Locations with Pin Names
21 A16 S3
22 A17 S4
23 A18 S5
24 A19 S6
25 N C
26 BHE (RFSH)
27 WR QS1
28 RD QSMD
29 ALE QS0
30 VSS
31 VSS
32 X1
33 X2
34 RESET
35 N C
36 CLKOUT
37 ARDY
38 S2
39 S1
40 S0
41 VSS
42 HLDA
43 HOLD
44 SRDY
45 LOCK
46 TEST BUSY
47 NMI
48 INT0
49 INT1 SELECT
50 VCC
51 VCC
52 INT2 INTA0
53 INT3 INTA1
54 DT R
55 N C
56 DEN
57 MCS0 PEREQ
58 MCS1 ERROR
59 MCS2
60 MCS3 NPS
NOTE
Pin names in parentheses apply to the 80C188XL
IO
UCS
62
LCS
63
MCS0 PEREQ 57
MCS1 ERROR 58
MCS2
59
MCS3 NPS
60
PCS0
71
PCS1
69
PCS2
68
PCS3
67
PCS4
66
PCS5 A1
65
PCS6 A2
64
TMR IN 0
77
TMR IN 1
76
TMR OUT 0
75
TMR OUT 1
74
DRQ0
79
DRQ1
78
61 VCC
62 UCS
63 LCS
64 PCS6 A2
65 PCS5 A1
66 PCS4
67 PCS3
68 PCS2
69 PCS1
70 VSS
71 PCS0
72 N C
73 RES
74 TMR OUT 1
75 TMR OUT 0
76 TMR IN 1
77 TMR IN 0
78 DRQ1
79 DRQ0
80 VSS
21
21
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