FDC37M60X View Datasheet(PDF) - SMSC -> Microchip
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Description
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FDC37M60X Datasheet PDF : 182 Pages
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FIGURE 13B - EPP 1.9 DATA OR ADDRESS READ CYCLE TIMING PARAMETERS
NAME
DESCRIPTION
MIN TYP MAX UNITS
t1 PDATA Hi-Z to Command Asserted
0
30
ns
t2 nIOR Asserted to PDATA Hi-Z
0
50
ns
t3 nWAIT Deasserted to Command Deasserted
(Note 1)
60
180
ns
t4 Command Deasserted to PDATA Hi-Z
0
ns
t5 Command Asserted to PDATA Valid
0
ns
t6 PDATA Hi-Z to nWAIT Deasserted
0
µs
t7 PDATA Valid to nWAIT Deasserted
0
ns
t8 nIOR Asserted to IOCHRDY Asserted
0
24
ns
t9 nWRITE Deasserted to nIOR Asserted (Note 2)
0
ns
t10 nWAIT Deasserted to IOCHRDY Deasserted
(Note 1)
60
160
ns
t11 IOCHRDY Deasserted to nIOR Deasserted
0
ns
t12 nIOR Deasserted to SDATA Hi-Z (Hold Time)
0
40
ns
t13 PDATA Valid to SDATA Valid
0
75
ns
t14 nWAIT Asserted to Command Asserted
0
195
ns
t15 Time Out
10
12
µs
t16 nWAIT Deasserted to PDATA Driven (Note 1)
60
190
ns
t17 nWAIT Deasserted to nWRITE Modified (Notes 1,2)
60
190
ns
t18 SDATA Valid to IOCHRDY Deasserted (Note 3)
0
85
ns
t19 Ax Valid to nIOR Asserted
40
ns
t20 nIOR Deasserted to Ax Invalid
10
10
ns
t21 nWAIT Asserted to nWRITE Deasserted
0
185
ns
t22 nIOR Deasserted to nIOW or nIOR Asserted
40
ns
t23 nWAIT Asserted to PDIR Set (Note 1)
60
185
ns
t24 PDATA Hi-Z to PDIR Set
0
ns
t25 nWAIT Asserted to PDATA Hi-Z (Note 1)
60
180
ns
t26 PDIR Set to Command
0
20
ns
t27 nWAIT Deasserted to PDIR Low (Note 1)
60
180
ns
t28 nWRITE Deasserted to Command
1
ns
Note 1: nWAIT is considered to have settled after it does not transition for a minimum of 50 ns.
Note 2: When not executing a write cycle, EPP nWRITE is inactive high.
Note 3: 85 is true only if t7 = 0.
166
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