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COM20020IP3V Scheda tecnica(PDF) 64 Page - SMSC Corporation

Il numero della parte COM20020IP3V
Spiegazioni elettronici  COM20020 3.3V ULANC Universal Local Area Network Controller with 2K x 8 On-Board RAM
PDF  72 Pages
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Produttore elettronici  SMSC [SMSC Corporation]
Homepage  http://www.smsc.com
Logo SMSC - SMSC Corporation

COM20020IP3V Scheda tecnica(HTML) 64 Page - SMSC Corporation

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FIGURE 21 – TTL INPUT TIMING ON XTAL1 PIN
FIGURE 22 – RESET AND INTERRUPT TIMING
t1
t3
Parameter
Input Clock High Time
Input Clock Period
min
10
25
max
units
nS
nS
XTAL1
t1
t4
Input Clock Frequency
100
t2
Input Clock Low Time
nS
t3
10
typ
10
t2
40
MHz
t5
Frequency Accuracy*
-200
200
''
Note*: Input clock frequency must be 20 MHz ( 100ppm or better) to use the internal Clock Multiplier.
()
 '' !
4.0V
1.0V
50% of VDD
t1
Parameter
nRESET Pulse Width***
min
max
units
nRESET
t1
t2
nINTR High to Next nINTR Low
typ
t2
nINTR
5TXTL*
EF = 0
EF = 1
TDR**/2
4TXTL*
Note*: TXTL is period of external XTAL oscillation frequency.
Note**: TDR is period of Data Rate (i.e. at 2.5 Mbps, TDR = 400 nS)
Note***: When the power is turned on, t1 is measured from stable XTAL
 * + ,!*!



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