8x300 design guide - Al Kossow's Bitsavers - Trailing-Edge
8x300 design guide - Al Kossow's Bitsavers - Trailing-Edge
8x300 design guide - Al Kossow's Bitsavers - Trailing-Edge
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+ X1=~<br />
~<br />
:~ 50!}<br />
.. ~<br />
PULSE<br />
8X300<br />
GENERATOR MICROCONTROLLER<br />
..<br />
J.. -<br />
~ 50!}<br />
PULSE GENERATOR CHARACTERISTICS<br />
ZOUT = 50n VOUT = 0-1 VOLT<br />
RISETIME ~ 10 ns SKEW ~ 10 ns<br />
- X2=~<br />
Figure 2-9. Pulse Generator Clocking<br />
The final method of oscillator control involves driving the oscillator<br />
with an external TTL clock. The interfacing of a master TTL clock<br />
to the 8X300 is illustrated in Figure 2-10.<br />
__ ---tl~.~-------..... --__I X1=~<br />
1K<br />
CLOCK<br />
•<br />
• = OPEN COLLECTOR<br />
1K<br />
8X300<br />
MICROCONTROLLER<br />
X2=~<br />
TTL DRIVER CHARACTERISTICS:<br />
FALL TIME ~ 10 ns<br />
SKEW BETWEEN COMPLEMENTARY OUTPUTS<br />
~ 10 ns<br />
Figure 2-10. TTL Clocking<br />
2-15