80C186EC Datasheet, PDF (35/57 Pages) Intel Corporation – 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS

80C186EC 188EC 80L186EC 188EC
AC Characteristics 80L186EC16 (Continued)
NOTES
1 See AC Timing Waveforms for waveforms and definition
2 Measure at V_IH for high time V_IL for low time
3 Only required to guarantee I_CC Maximum limits are bounded by T_C T_CH and T_CL
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_CHOV1 applies to BHE (RFSH) LOCK and A19 16 only after a HOLD release
8 T_CHOV2 applies to RD and WR only after a HOLD release
9 Setup and Hold are required to guarantee recognition
10 Setup and Hold are required for proper operation
Relative Timings (80C186EC-25 20 13 80L186EC-16 13)
Symbol
Parameter
Min
Max
RELATIVE TIMINGS
T_LHLL
T_AVLL
T_PLLL
T_LLAX
T_LLWL
T_LLRL
T_WHLH
T_AFRL
T_RLRH
T_WLWH
T_RHAX
T_WHDX
T_WHPH
T_RHPH
T_PHPL
ALE Active Pulse Width
AD Valid Setup before ALE Falls
Chip Select Valid before ALE Falls
AD Hold after ALE Falls
ALE Falling to WR Falling
ALE Falling to RD Falling
WR Rising to Next ALE Rising
AD Float to RD Falling
RD Active Pulse Width
WR Active Pulse Width
RD Rising to Next Address Active
Output Data Hold after WR Rising
WR Rise to Chip Select Rise
RD Rise to Chip Select Rise
Chip Select Inactive to Next Chip
Select Active
T ^b 15
T ^b 10
T ^b 10
T ^b 10
T ^b 15
T ^b 15
T ^b 10
0
2T ^b 5
2T ^b 5
T ^b 15
T ^b 15
T ^b 10
T ^b 10
T ^b 10
T_OVRH
T_RHOX
T_IHIL
ONCE Active Setup to RESIN Rising
ONCE Hold after RESIN Rise
INTA High to Next INTA Low
during INTA Cycle
T
T
4T ^b 5
T_ILIH
T_CVIL
INTA Active Pulse Width
CAS2 0 Setup before 2nd INTA
Pulse Low
2T ^b 5
8T
T_ILCX
CAS2 0 Hold after 2nd INTA Pulse Low
4T
T_IRES
Interrupt Resolution Time
150
T_IRLH
IR Low Time to Reset Edge Detector
50
T_IRHIF
IR Hold Time after 1st INTA Falling
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1
1
1
1
2
2
1
1
1
4
24
24
24
3
45
35