參數(shù)資料
型號: S3P863A
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: S3C8639/C863A/P863A MICROCONTROLLERS
中文描述: S3C8639/C863A/P863A微控制器
文件頁數(shù): 15/23頁
文件大?。?/td> 169K
代理商: S3P863A
S3C8639/C863A/P863A
ELECTRICAL DATA
19-7
Table 19-7. Oscillation Characteristics
(T
A
= – 40
°
C + 85
°
C)
Oscillator
Main crystal or
ceramic
Clock Circuit
Conditions
Min
8
Typ
Max
12
Unit
MHz
C2
C1
X
IN
X
OUT
V
DD
= 3.0 V to 5.5 V
External clock
(main)
X
IN
X
OUT
V
DD
= 3.0 V to 5.5 V
8
12
MHz
NOTE
: The maximum oscillator frequency is 12 MHz. If you use an oscillator frequency higher than 12 MHz, you cannot
select a non-divided CPU clock using CLKCON settings. That is, you must select one of the divide-by values.
Table 19-8. Oscillation Stabilization Time
(T
A
= – 40
°
C + 85
°
C, V
DD
= 3.0 V to 5.5 V)
Oscillator
Crystal
Test Condition
Min
Typ
Max
20
Unit
ms
V
DD
= 3.0 V to 5.5 V
V
DD
= 3.0 V to 5.5V
X
IN
input high and low level width
(t
XH
, t
XL
)
Ceramic
10
External clock
25
500
ns
NOTE
: Oscillation stabilization time is the time required for the CPU clock to return to its normal oscillation frequency after a
power-on occurs, or when Stop mode is released.
X
IN
t
XH
t
XL
1/fx
V
DD
- 0.5 V
0.4 V
Figure 19-3. Clock Timing Measurement Points for X
IN
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