AM186ED Datasheet, PDF (74/88 Pages) Advanced Micro Devices – High Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers

PRELIMINARY
SWITCHING CHARACTERISTICS over COMMERCIAL and INDUSTRIAL operating ranges
Interrupt Acknowledge Cycle (20 MHz and 25 MHz)
Preliminary
Parameter
20 MHz
25 MHz
No. Symbol
Description
Min
Max
Min
Max Unit
General Timing Requirements
1
t_DVCL Data in Setup
2
t_CLDX Data in Hold
General Timing Responses
10
10
ns
3
3
ns
3
t_CHSV Status Active Delay
0
25
0
20
ns
4
t_CLSH Status Inactive Delay
0
25
0
20
ns
7
t_CLDV Data Valid Delay
0
25
0
20
ns
8
t_CHDX Status Hold Time
0
0
ns
9
t_CHLH ALE Active Delay
25
20
ns
10
t_LHLL ALE Width
t_CLCL – 10 = 40
t_CLCL – 10 = 30
ns
11
t_CHLL ALE Inactive Delay
25
20
ns
12
t_AVLL AD Address Invalid to ALE Low^(a)
t_CLCH – 2
t_CLCH – 2
ns
15
t_CLAZ AD Address Float Delay
19
t_DXDL DEN Inactive to DT/R Low^(a)
20
t_CVCTV Control Active Delay 1^(b)
t_CLAX =0
25
t_CLAX = 0
20
ns
0
0
ns
0
25
0
20
ns
T 21
t_CVDEX DEN Inactive Delay
22
t_CHCTV Control Active Delay 2^(c)
0
25
0
20
ns
0
25
0
20
ns
23
t_LHAV ALE High to Address Valid
F ³¹
t_CVCTX Control Inactive Delay^(b)
20
15
ns
0
25
0
20
ns
68
t_CHAV CLKOUTA High to A Address Valid
0
25
0
20
ns
Notes:
All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions
are with C_L =50 pF. For switching tests, V_IL=0.45 V and V_IH =2.4 V, except at X1 where V_IH =V_CC – 0.5 V.
A _{a Testing is performed with equal loading on referenced pins.}
b This parameter applies to the INTA1–INTA0 signals.
D ^{R c This parameter applies to the DEN and DT/R signals.}
74
Am186ED/EDLV Microcontrollers