16-Bit High-Integration Embedded Processors Specification Sheet

80C186EA/80C188EA, 80L186EA/80L188EA
Table 8. SQFP Pin Functions with Package Location
AD Bus
AD0 1
AD1 3
AD2 6
AD3 8
AD4 12
AD5 14
AD6 16
AD7 18
AD8 (A8) 2
AD9 (A9) 5
AD10 (A10) 7
AD11 (A11) 9
AD12 (A12) 13
AD13 (A13) 15
AD14 (A14) 17
AD15 (A15) 19
A16/S3 21
A17/S4 22
A18/S5 23
A19/S6 24
Bus Control
ALE/QS0 29
BHE
/(RFSH)26
S0
40
S1
39
S2
38
RD
/QSMD 28
WR/QS1 27
ARDY 37
SRDY 44
DEN
56
DT/R
54
LOCK
45
HOLD 43
HLDA 42
No Connection
N.C. 4
N.C. 25
N.C. 35
N.C. 72
Processor Control
RESIN 73
RESOUT 34
CLKIN 32
OSCOUT 33
CLKOUT 36
TEST
/BUSY 46
NMI 47
INT0 48
INT1/SELECT
49
INT2/INTA0
52
INT3/INTA1
53
PDTMR 55
Power and Ground
V
CC
10
V
CC
11
V
CC
20
V
CC
50
V
CC
51
V
CC
61
V
SS
30
V
SS
31
V
SS
41
V
SS
70
V
SS
80
I/O
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
NOTE:
Pin names in parentheses apply to the 80C186EA/80L188EA.
Table 9. SQFP Pin Locations with Pin Names
1 AD0
2 AD8 (A8)
3 AD1
4 N.C.
5 AD9 (A9)
6 AD2
7 AD10 (A10)
8 AD3
9 AD11 (A11)
10 V
CC
11 V
CC
12 AD4
13 AD12 (A12)
14 AD5
15 AD13 (A13)
16 AD6
17 AD14 (A14)
18 AD7
19 AD15 (A15)
20 V
CC
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 V
SS
31 V
SS
32 X1
33 X2
34 RESET
35 N.C.
36 CLKOUT
37 ARDY
38 S2
39 S1
40 S0
41 V
SS
42 HLDA
43 HOLD
44 SRDY
45 LOCK
46 TEST/BUSY
47 NMI
48 INT0
49 INT1/SELECT
50 V
CC
51 V
CC
52 INT2/INTA0
53 INT3/INTA1
54 DT/R
55 PDTMR
56 DEN
57 MCS0/PEREQ
58 MCS1
/ERROR
59 MCS2
60 MCS3/NPS
61 V
CC
62 UCS
63 LCS
64 PCS6/A2
65 PCS5
/A1
66 PCS4
67 PCS3
68 PCS2
69 PCS1
70 V
SS
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 V
SS
NOTE:
Pin names in parentheses apply to the 80C186EA/80L188EA.
19
19