AM186EM-20KC/W AMD [Advanced Micro Devices], AM186EM-20KC/W Datasheet - Page 73

• Manufacturer Part Number: AM186EM-20KC/W
• Description: High Performance, 80C186-/80C188-Compatible and 80L186-/80L188-Compatible, 16-Bit Embedded Microcontrollers
• Manufacturer: AMD [Advanced Micro Devices]

SWITCHING CHARACTERISTICS over COMMERCIAL operating range
PSRAM Write Cycle (33 MHz and 40 MHz)
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
a Equal loading on referenced pins.
b This parameter applies to the DEN , WR, WHB, and WLB signals.
General Timing Responses
Write Cycle Timing Responses
No.
10
11
20
23
80
81
84
30
31
32
33
34
65
68
87
5
7
8
9
Symbol
t
t
t
t
t
t
t
t
t
t
CLDOX
t
t
t
t
t
CVCTV
t
CVCTX
t
t
CLCLX
CLCSL
t
WLWH
L
WHLH
WHDX
CHDX
AVWL
CHAV
CLAV
CLDV
CHLH
LHAV
LHLL
CHLL
LRLL
AVBL
= 50 pF. For switching tests, V
AD Address Valid Delay and
BHE
Data Valid Delay
Status Hold Time
ALE Active Delay
ALE Width
ALE Inactive Delay
Control Active Delay 1
ALE High to Address Valid
LCS Inactive Delay
LCS Active Delay
LCS Precharge Pulse Width
Data Hold Time
Control Inactive Delay
WR Pulse Width
WR Inactive to ALE High
Data Hold after WR
A Address Valid to WR Low
CLKOUTA High to A
Address Valid
A Address Valid to WHB,
WLB Low
Parameter
Description
Am186/188EM and Am186/188EMLV Microcontrollers
(a)
IL
(b)
(b)
= 0.45 V and V
(a)
P R E L I M I N A R Y
t
t
t
t
CLCL
CLCL
CLCL
CLCL
2t
t
t
CLCH
CHCL
CLCL
IH
Min
=50
–10=20
10
–3
–10=20
–3
+ t
+t
0
0
0
0
0
0
0
0
0
33 MHz
= 2.4 V, except at X1 where V
–10
CHCL
–2
–3
CLCH
Preliminary
Max
15
15
15
15
15
15
15
15
15
15
t
t
t
CLCL
t
CLCL
t
CLCL
CLCL
2t
CHCL
t
CLCH
CLCL
–1.25
–1.25
Min
=40
7.5
–10=15
–5=20
+ t
+t
0
0
0
0
0
0
0
0
0
40 MHz
–1.25
CHCL
–10
–2
CLCH
IH
= V
CC
Max
12
12
12
12
12
12
12
12
10
12
– 0.5 V.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
73