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PC8477B Scheda tecnica(PDF) 48 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte PC8477B
Spiegazioni elettronici  Advanced Floppy Disk Controller
PDF  54 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC8477B Scheda tecnica(HTML) 48 Page - National Semiconductor (TI)

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70 Reference Section (Continued)
TABLE 7-1 8477B – 82077 Parameter Comparison
Description
PC8477B
82077AA
82077SL
Units
Absolute Maximum Ratings
Supply Voltage
b
05 – 70
b
05 – 80
b
05 – 80
V
DC Limits
VIH Clock MIN
20
39
39
V
IOL MFM pin (VOL e 04V)
40
25
25
mA
IOH MFM pin (VOH e 30V)
b
40
b
25
b
25
mA
ICC Low Power (Analog a Digital) Typical
0505
15
mA
ICCLow Power (Analog a Digital) Tested
205
no spec
mA
AC Timings
t5 (tICP)–INTERNAL Clock Period
1 Mbs
125
125
125
ns
500 kbs
125
250
250
ns
300 kbs
208
420
420
ns
250 kbs
250
500
500
ns
t8 (tRR)–Read Active Pulse Width MIN
60
90
90
ns
t10 (tRD)–Read to Valid Data
45
80
80
ns
t11 (tRH)–Read Inactive Pulse Width
45
60
60
ns
t12 (tDF)–Delay to Float
25
35
35
ns
t13 (tRI)–Interrupt Delay from Read Inactive MAX
1 Mbs
55
250
250
ns
500 kbs
55
375
375
ns
300 kbs
55
545
545
ns
250 kbs
55
625
625
ns
t16 (tWW)–Write Active Pulse Width MIN
60
90
90
ns
t19 (tDW)–Data Setup to Write Active
30
70
70
ns
t18 (tWH)–Write Inactive Pulse Width
45
60
60
ns
tADW–Address Setup to Write Inactive MIN
65
no spec
no spec
ns
t21 (tWI)–Interrupt Delay from Write Inactive
1 Mbs
55
250
250
ns
500 kbs
55
375
375
ns
300 kbs
55
545
545
ns
250 kbs
55
625
625
ns
t22 (tQP)–DRQ Cycle Period MIN
8
65
65
m
s
t23 (tKQ)–DACK Active to DRQ Inactive MAX
65
75
75
ns
t23a (tQK a tKK)–DRQ to DACK Inactive
1 Mbs
60
no spec
83
ns
500 kbs
60
no spec
166
ns
300 kbs
60
no spec
280
ns
250 kbs
60
no spec
333
ns
t24 (tRQ)–RD WR Active to DRQ Inactive MAX
65
100
100
ns
t27 (tQR)–DRQ to RD WR Active MIN
15
0
0
ns
t29 (tTQ)–TC Active to DRQ Inactive MAX
75
150
150
ns
tKK–DACK Active Pulse Width MIN
65
no spec
no spec
ns
tKI–DACK Inactive Pulse Width MIN
25
no spec
no spec
ns
tQK–DRQ to DACK Active MIN
10
no spec
no spec
ns
t30 (tRW)–Reset Pulse Width MIN
100
7083
7083
ns
t30a (tRW)–Software Reset Pulse Width MIN (Worst Case)
100
3500
500
ns
t31 (tRC)–Reset to Control Inactive
160
2000
2000
ns
t32 (tWDW)–Write Data Pulse Width MIN
1 Mbs
250
150
150
ns
500 kbs
250
360
360
ns
300 kbs
416
615
615
ns
250 kbs
500
740
740
ns
48



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