6.0 XTAL1 CLOCK DRIVE TIMING CHARACTERISTICS
SYMBOL
PARAMETER
Oscillator Frequency
MINIMUM
MAXIMUM
UNIT
1(note 1)
fOSC
20
MHz
)
1000(note 1
TOSC
tOSCH
tOSCL
tOSCR
tOSCF
Oscillator Period
High Time
Low Time
50
ns
ns
ns
ns
ns
17(note 1)
17(note 1)
10(note 2)
Rise Time
)
10(note 2
Fall Time
Note:
1. Tested only at initial qualification, and after any design or process changes which may affect this characteristic.
2. Supplied as a design limit, but not guaranteed or tested.
t
OSCH
t
t
OSCR
OSCF
t
OSCL
0.7 V
0.7 V
DD
DD
0.7 V
DD
0.3V
0.3V
DD
DD
T
OSC
Figure 7. External Clock Drive Timing Waveforms
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