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S3C8248/C8245/P8245/C8247/C8249/P8249
X
, XT
IN
IN
°
°
(T
= -40
C + 85
C, V
A
Oscillator
Crystal
External Clock
t
, t
XL
XTL
Figure 19-7. Clock Timing Measurement at X
Table 19-13. Sub Oscillator Frequency (f
= 1.8 V to 5.5 V)
DD
Clock Circuit
XT
XT
IN
OUT
R
C1
C2
XT
XT
IN
OUT
1/fosc1, 1/fosc2
Test Condition
Crystal oscillation frequency
C1 = 22 pF,
C2 = 33 pF
R = 39 KΩ
XT
input frequency
IN
t
, t
XH
XTH
V
DD
IN
)
OSC2
Min
Typ
32
32.768
32
–
ELECTRICAL DATA
- 0.1V
0.1V
Max
Unit
35
kHz
100
kHz
19-13
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