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AC SPECIFICATIONS
AC Characteristics 80C186EC25
Symbol
SYNCHRONOUS INPUTS
T
TEST NMI INT4 0 BCLK1 0 T1 0IN READY CTS1 0
CHIS
P2 6 P2 7
T
TEST NMI INT4 0 BCLK1 0 T1 0IN READY CTS1 0
CHIH
T
AD15 0 (AD7 0) READY
CLIS
T
READY AD15 0 (AD7 0)
CLIH
T
HOLD PEREQ ERROR
CLIS
T
HOLD PEREQ ERROR
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 13 for capacitive derating information
5 Specified for a 50 pF load see Figure 14 for rise and fall times outside 50 pF
6 See Figure 14 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
(Continued)
Parameter
for low time
IL
Maximum limits are bounded by T
CC
80C186EC 188EC 80L186EC 188EC
25 MHz
Min
Max
10
3
10
3
10
3
T
and T
C
CH
CL
Units
Notes
ns
1 9
ns
1 9
ns
1 10
ns
1 10
ns
1 9
ns
1 9
31
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