Electronics America Personal Computer User Manual

µ PD75P308
22
AC TIMING TEST POINT (excluding X1 and XT1 inputs)
Test points
0.8 V
DD
0.2 VDD
0.8 VDD
0.2 VDD
CLOCK TIMING
X1 input
V
DD –0.5V
0.4 V
tXL tXH
1/fX
XT1 input
V
DD –0.5V
0.4 V
tXTL tXTH
1/fXT
TI0
tTIL tTIH
1/fTI
TI0 TIMING