PC87334VLJ datasheet(88/102 Pages) NSC

88 / 102 page

100 Electrical Characteristics (Continued)

103 AC Electrical Characteristics 50V g10% 33V g10%

1031 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)

TLC12039 – 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

TLC12039 – 23

1032 Clock Timing

Symbol

Parameter

Min

Max

Units

tCH

Clock High Pulse Width

tCL

Clock Low Pulse Width

tCP

Clock Period

tICP

Internal Clock Period

(See Table 10-1)

tDRP

Data Rate Period

(See Table 10-1)

TABLE 10-1 Nominal tICP and tDRP Values

MFM Data Rate

tDRP

tICP

Value

Units

1 Mbps

1000

3 c tCP

125

500 kbps

2000

3 c tCP

125

300 kbps

3333

5 c tCP

208

250 kbps

4000

6 c tCP

250

TLC12039 – 24

FIGURE 10-1 Clock Timing

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