Intel 80L186EA User Manual
Page 25
80C186EA 80C188EA 80L186EA 80L188EA
AC SPECIFICATIONS
AC Characteristics
80C186EA25 80C186EA20 80C186EA13
Symbol
Parameter
Min
Max
Min
Max
Min
Max Units
Notes
INPUT CLOCK
25 MHz
(12)
20 MHz
13 MHz
T
F
CLKIN Frequency
0
50
0
40
0
26
MHz
1
T
C
CLKIN Period
20
%
25
%
38 5
%
ns
1
T
CH
CLKIN High Time
10
%
10
%
12
%
ns
1 2
T
CL
CLKIN Low Time
10
%
10
%
12
%
ns
1 2
T
CR
CLKIN Rise Time
1
8
1
8
1
8
ns
1 3
T
CF
CLKIN Fall Time
1
8
1
8
1
8
ns
1 3
OUTPUT CLOCK
T
CD
CLKIN to CLKOUT Delay
0
15
0
17
0
23
ns
1 4
T
CLKOUT Period
2T
C
2 T
C
2 T
C
ns
1
T
PH
CLKOUT High Time
(T 2)
b
5
(T 2)
b
5
(T 2)
b
5
ns
1
T
PL
CLKOUT Low Time
(T 2)
b
5
(T 2)
b
5
(T 2)
b
5
ns
1
T
PR
CLKOUT Rise Time
1
6
1
6
1
6
ns
1 5
T
PF
CLKOUT Fall Time
1
6
1
6
1
6
ns
1 5
OUTPUT DELAYS
T
CHOV1
ALE S2 0 DEN DT R
3
20
3
22
3
25
ns
1 4 6 7
BHE (RFSH) LOCK A19 16
T
CHOV2
MCS3 0 LCS UCS PCS6 0
3
25
3
27
3
30
ns
1 4 6 8
NCS RD WR
T
CLOV1
BHE (RFSH) DEN LOCK
3
20
3
22
3
25
ns
1 4 6
RESOUT HLDA
T0OUT T1OUT A19 16
T
CLOV2
RD WR MCS3 0 LCS
3
25
3
27
3
30
ns
1 4 6
UCS PCS6 0 AD15 0
(A15 8 AD7 0)
NCS INTA1 0 S2 0
T
CHOF
RD WR BHE (RFSH) DT R
0
25
0
25
0
25
ns
1
LOCK S2 0 A19 16
T
CLOF
DEN AD15 0 (A15 8 AD7 0)
0
25
0
25
0
25
ns
1
25
25