80C186EC/188EC, 80L186EC/188EC
AC SPECIFICATIONS
AC CharacteristicsÐ80C186EC25
Symbol
Parameter
25 MHz
Units
Notes
Min
Max
INPUT CLOCK
T
F
CLKIN Frequency
0
50
MHz
1
T
C
CLKIN Period
20
%
ns
1
T
CH
CLKIN High Time
8
%
ns
1, 2
T
CL
CLKIN Low Time
8
%
ns
1, 2
T
CR
CLKIN Rise Time
1
10
ns
1, 3
T
CF
CLKIN Fall Time
1
10
ns
1, 3
OUTPUT CLOCK
T
CD
CLKIN to CLKOUT Delay
0
17
ns
1, 4
T
CLKOUT Period
2
*
T
C
ns
1
T
PH
CLKOUT High Time
(T/2)
b
5
(T/2)
a
5
ns
1
T
PL
CLKOUT Low Time
(T/2)
b
5
(T/2)
a
5
ns
1
T
PR
CLKOUT Rise Time
1
6
ns
1, 5
T
PF
CLKOUT Fall Time
1
6
ns
1, 5
OUTPUT DELAYS
T
CHOV1
ALE, S2:0, DEN, DT/R,
3
17
ns
1, 4, 6, 7
BHE (RFSH), LOCK, A19:16
T
CHOV2
GCS0:7, LCS, UCS, NCS, RD, WR
3
20
ns
1, 4, 6, 8
T
CLOV1
BHE (RFSH), DEN, LOCK, RESOUT,
3
17
ns
1, 4, 6
HLDA, T0OUT, T1OUT, A19:16
T
CLOV2
RD, WR, GCS7:0, LCS, UCS, AD15:0
3
20
ns
1, 4, 6
(AD7:0, A15:8), NCS, INTA1:0, S2:0
T
CHOF
RD, WR, BHE (RFSH), DT/R,
0
20
ns
1
LOCK, S2:0, A19:16
T
CLOF
DEN, AD15:0 (AD7:0, A15:8)
0
20
ns
1
30