Jameco Electronics 2000 ユーザーズマニュアル
226
Rabbit 3000 Microprocessor
Figure 16-7. Clock Doubler and Memory Timing
Oscillator
Oscillator delayed
and inverted
and inverted
Doubled clock
Delay
time
time
48%
52%
P
0.48P
0.52P
0.48P
0.52P
Data out
Example
Write
Cycle
Write
Cycle
write pulse
early write pulse
option
option
Example
Read
Cycle
Read
Cycle
address, /CS
address, /CS
output enb
early output enb
option
option
Valid data out from mem