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80C186EC 188EC 80L186EC 188EC
AC SPECIFICATIONS
AC Characteristics 80C186EC-20 80C186EC-13
Symbol
Parameter
INPUT CLOCK
TF
CLKIN Frequency
TC
CLKIN Period
TCH
CLKIN High Time
TCL
CLKIN Low Time
TCR
CLKIN Rise Time
TCF
CLKIN Fall Time
OUTPUT CLOCK
T
CLKIN to CLKOUT Delay
CD
T
CLKOUT Period
T
CLKOUT High Time
PH
T
CLKOUT Low Time
PL
T
CLKOUT Rise Time
PR
T
CLKOUT Fall Time
PF
OUTPUT DELAYS
T
ALE S2 0 DEN DT R
CHOV1
BHE (RFSH) LOCK A19 16
T
GCS7 0 LCS UCS
CHOV2
RD WR NCS WDTOUT
T
BHE (RFSH) DEN LOCK RESOUT
CLOV1
HLDA T0OUT T1OUT
T
RD WR GSC7 0 LCS UCS AD15 0
CLOV2
(AD7 0 A15 8) NCS INTA S2 0 A19 16
T
RD WR BHE (RFSH) DT R LOCK
CHOF
S2 0 A19 16
T
DEN AD15 0 (AD7 0 A15 8)
CLOF
INPUT REQUIREMENTS
T
TEST NMI T1IN T0IN READY
CHIS
CTS1 0 BCLK1 0 P3 4 P3 5
T
TEST NMI T1IN T0IN READY
CHIH
CTS1 0 BCLK1 0 P3 4 P3 5
T
AD15 0 (AD7 0) READY
CLIS
T
AD15 0 (AD7 0) READY
CLIH
T
HOLD RESIN PEREQ ERROR DRQ3 0
CLIS
T
HOLD RESIN REREQ ERROR DRQ3 0
CLIH
NOTES
1 See AC Timing Waveforms for waveforms and definition
2 Measure at V
for high time V
IH
3 Only required to guarantee I
4 Specified for a 50 pF load see Figure 14 for capacitive derating information
5 Specified for a 50 pF load see Figure 15 for rise and fall times outside 50 pF
6 See Figure 15 for rise and fall times
7 T
applies to BHE (RFSH) LOCK and A19 16 only after a HOLD release
CHOV1
8 T
applies to RD and WR only after a HOLD release
CHOV2
9 Setup and Hold are required to guarantee recognition
10 Setup and Hold are required for proper operation
32
(T 2)
(T 2)
for low time
IL
Maximum limits are bounded by T
CC
Min
Max
Min
20 MHz
13 MHz
0
40
0
25
38 5
%
10
12
%
10
12
%
1
10
1
1
10
1
0
17
0
2 TC
5 (T 2)
5 (T 2)
b
a
b
5 (T 2)
5 (T 2)
b
a
b
1
6
1
1
6
1
3
20
3
3
23
3
3
20
3
3
23
3
0
25
0
0
25
0
10
10
3
3
10
10
3
3
10
10
3
3
T
and T
C
CH
CL
Max
Unit Notes
26
MHz
1
ns
1
%
ns
1 2
%
ns
1 2
%
10
ns
1 3
10
ns
1 3
23
ns
1 4
2 TC
ns
1
5 (T 2)
5 ns
1
a
5 (T 2)
5 ns
1
a
6
ns
1 5
6
ns
1 5
25
ns 1 4 6 7
30
ns 1 4 6 8
25
ns
1 4 6
30
ns
1 4 6
30
ns
1
30
ns
1
ns
1 9
ns
1 9
ns
1 10
ns
1 10
ns
1 9
ns
1 9
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