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AM186EM-33VC/W Scheda tecnica(PDF) 75 Page - Advanced Micro Devices

Il numero della parte AM186EM-33VC/W
Spiegazioni elettronici  High Performance, 80C186-/80C188-Compatible and 80L186-/80L188-Compatible, 16-Bit Embedded Microcontrollers
PDF  98 Pages
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Produttore elettronici  AMD [Advanced Micro Devices]
Homepage  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM186EM-33VC/W Scheda tecnica(HTML) 75 Page - Advanced Micro Devices

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Am186/188EM and Am186/188EMLV Microcontrollers
75
P R E L IMINAR Y
SWITCHING CHARACTERISTICS over COMMERCIAL operating range
PSRAM Refresh Cycle (20 MHz and 25 MHz)
Note:
All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions
are with CL = 50 pF. For switching tests, VIL = 0.45 V and VIH = 2.4 V, except at X1 where VIH = VCC – 0.5 V.
a
Equal loading on referenced pins.
Preliminary
Parameter
20 MHz
25 MHz
No.
Symbol
Description
Min
Max
Min
Max
Unit
General Timing Responses
9
tCHLH
ALE Active Delay
25
20
ns
10
tLHLL
ALE Width
tCLCL–10=
40
tCLCL–10=
30
ns
11
tCHLL
ALE Inactive Delay
25
20
ns
Read/Write Cycle Timing Responses
25
tCLRL
RD Active Delay
0
25
0
20
ns
26
tRLRH
RD Pulse Width
2tCLCL–15
=85
2tCLCL–15
=65
ns
27
tCLRH
RD Inactive Delay
0
25
0
20
ns
28
tRHLH
RD Inactive to ALE High(a)
tCLCH–3
tCLCH–3
ns
80
tCLCLX
LCS Inactive Delay
0
25
0
20
ns
81
tCLCSL
LCS Active Delay
0
25
0
20
ns
Refresh Timing Cycle Parameters
79
tCLRFD
CLKOUTA Low to RFSH Valid
0
25
0
20
ns
82
tCLRF
CLKOUTA High to RFSH Invalid
0
25
0
20
ns
85
tRFCY
RFSH Cycle Time
6
• t
CLCL
6
• t
CLCL
ns
86
tLCRF
LCS Inactive to RFSH Active Delay
2tCLCL–3
2tCLCL–3



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