S3C9442/C9444/F9444/C9452/C9454/F9454
ELECTRICAL DATA
(TA = – 40°C to + 85°C)
Table 13-4. Oscillator Characteristics
Oscillator
Main crystal or
ceramic
Clock Circuit
C1
XIN
Test Condition
VDD = 4.5 to 5.5 V
Min Typ Max Unit
1
–
10
MHz
C2
XOUT
External clock
(Main System)
External RC
oscillator
Internal RC
Oscillator
VDD = 2.7 to 4.5 V
VDD = 2.0 to 2.7 V
XIN
VDD = 4.5 to 5.5 V
XOUT
–
VDD = 2.7 to 4.5 V
VDD = 2.0 to 2.7 V
VDD = 4.75 to 5.25 V
Tolerance:10 %
VDD = 4.75 to 5.25 V
1
–
6
MHz
1
–
3
MHz
1
–
10
MHz
1
–
6
MHz
1
–
3
MHz
–
4
–
MHz
3.2
0.5
Table 13-5. Oscillation Stabilization Time
(TA = - 40 °C to + 85 °C, VDD = 3.0 V to 5.5 V)
Oscillator
Test Condition
Min
Typ
Max
Unit
Main crystal
fOSC > 1.0 MHz
–
–
20
ms
Main ceramic
Oscillation stabilization occurs when VDD is
–
equal to the minimum oscillator voltage range.
–
10
ms
External clock
(main system)
Oscillator
stabilization
XIN input high and low width (tXH, tXL)
tWAIT when released by a reset (1)
25
–
500
ns
–
216/fOSC
–
ms
wait time
tWAIT when released by an interrupt (2)
–
–
–
ms
NOTES:
1. fOSC is the oscillator frequency.
2. The duration of the oscillator stabilization wait time, tWAIT, when it is released by an interrupt is determined by the
settings in the basic timer control register, BTCON.
13-5