P R E L I M I N A R Y
KEY TO SWITCHING WAVEFORMS
WAVEFORM
INPUTS
OUTPUTS
Must be
Steady
Will be
Steady
May
Change
from H to L
Will be
Changing
from H to L
May
Change
from L to H
Will be
Changing
from L to H
Don’t Care,
Any Change
Permitted
Changing,
State
Unknown
Does Not
Apply
Center
Line is High-
Impedance
“Off” State
KS00010
SWITCHING WAVEFORMS
tCLKR
tCLKF
tCLK
tCLKH
tCLKL
19880B-11
Figure 7. Clock (CLK) Timing
tRST
tPRST
RST
19880B-12
Figure 8. Reset Pulse
20
Am79C988A