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PC87332 Datasheet(PDF) 86 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87332
Description  PC87332VLJ (3.3V/5V) and PC87332VLJ-5 (5V) (SuperI/OTM III Premium Green) Floppy Disk Controller, Dual UARTs, IEEE1284 Parallel Port, and IDE Interfac
PDF  98 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87332 Datasheet(HTML) 86 Page - National Semiconductor (TI)

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90 Electrical Characteristics (Continued)
93 AC Electrical Characteristics 50V g10% 33V g10%
931 AC Test Conditions
TA e 0 Cto70 C VDD e 50V g 10% 33V g 10%
Input Pulse Levels
Ground to 3V
Input Rise and Fall Times
6 ns
Input and Output Reference Levels
14V
TRI-STATE Reference Levels
Active High b05V
Active Low a05V
LOAD CIRCUIT
(Notes 1 2 3 4)
TLC11930 – 22
Note 1
CL e 100 pF includes jig and scope capacitance
Note 2
S1 e Open for push-pull outputs S1 e VDD for high impedance to active low and active low to high impedance measurements S1 e GND for high
impedance to active high and active high to high impedance measurements RL e 10 kX for mP interface pins
Note 3
For the FDC Open Drive Interface Pins S1 e VDD and RL e 150X
Note 4
For 3V operation it is recommended to connect all reset strap pins to the CMOS input
AC TESTING INPUT AND OUTPUT WAVEFORM
TLC11930 – 23
932 Clock Timing
Symbol
Parameter
Min
Max
Units
tCH
Clock High Pulse Width
16
ns
tCL
Clock Low Pulse Width
16
ns
tCP
Clock Period
40
43
ns
tICP
Internal Clock Period
(See Table 10-1)
ns
tDRP
Data Rate Period
(See Table 10-1)
ns
TABLE 9-1 Nominal tICP and tDRP Values
MFM Data Rate
tDRP
tICP
Value
Units
1 Mbps
1000
3 c tCP
125
ns
500 kbps
2000
3 c tCP
125
ns
300 kbps
3333
5 c tCP
208
ns
250 kbps
4000
6 c tCP
250
ns
TLC11930 – 24
FIGURE 9-1 Clock Timing
86



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