80C186EC Datasheet, PDF (21/57 Pages) Intel Corporation – 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS

AD Bus
AD0
73
AD1
72
AD2
71
AD3
70
AD4
66
AD5
65
AD6
64
AD7
63
AD8 (A8)
60
AD9 (A9)
59
AD10 (A10) 58
AD11 (A11) 57
AD12 (A12) 56
AD13 (A13) 55
AD14 (A14) 54
AD15 (A15) 53
A16
77
A17
76
A18
75
A19 ONCE 74
80C186EC 188EC 80L186EC 188EC
Table 7 SQFP Pin Functions with Location
Bus Control
Processor Control
ALE
52
BHE (RFSH) 51
S0
78
S1
79
S2
80
RD
50
WR
49
READY
85
DT R
46
DEN
47
LOCK
48
HOLD
44
HLDA
45
RESIN
8
RESOUT
7
CLKIN
10
OSCOUT
11
CLKOUT
6
TEST BUSY 83
NMI
82
INT0
30
INT1
31
INT2
32
INT3
33
INT4
40
INT5
41
INT6
42
INT7
43
INTA
34
PEREQ (V_SS) 81
ERROR (V_CC) 84
NCS (N C )
35
PDTMR
9
Power and Ground
V_CC
13
V_CC
14
V_CC
38
V_CC
62
V_CC
67
V_CC
69
V_CC
86
V_SS
12
V_SS
15
V_SS
37
V_SS
39
V_SS
61
V_SS
68
V_SS
87
IO
UCS
88
LCS
89
P1 0 GCS0
97
P1 1 GCS1
96
P1 2 GCS2
95
P1 3 GCS3
94
P1 4 GCS4
93
P1 5 GCS5
92
P1 6 GCS6
91
P1 7 GCS7
90
P2 0 RXD0
16
P2 1 TXD0
17
P2 2 BCLK0
18
P2 3 CTS0
19
P2 4 RXD1
20
P2 5 TXD1
21
P2 6 BCLK1
22
P2 7 CTS1
23
P3 0 RXI1
24
P3 1 TXI1
25
P3 2 DMAI0
26
P3 3 DMAI1
27
P3 4
28
P3 5
29
DRQ0
98
DRQ1
99
DRQ2
100
DRQ3
1
T0IN
3
T0OUT
2
T1IN
5
T1OUT
4
WDTOUT
36
21