參數(shù)資料
型號： KS88C4504
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： new SAM87RC family of 8-bit single-chip CMOS microcontrollers offers a fast and efficient CPU, a wide range of integrated peripherals, and various mas
中文描述： 新SAM87RC家庭的8位單芯片CMOS微控制器提供了快速，高效的CPU，一個廣泛的集成外設(shè)，以及各種馬航
文件頁數(shù)： 24/36頁
文件大?。?/td> 293K
代理商： KS88C4504
ELECTRICAL DATA
KS88C4504/P4504
18-10
Table 18-8. Main Oscillator Frequency (f
OSC1
)
(T
A
= – 40
°
C + 85
°
C, V
DD
= 4.5 V to 5.5 V)
Oscillator
Crystal
Clock Circuit
Test Condition
CPU clock oscillation
frequency
Min
4
Typ
–
Max
25
Unit
MHz
C2
C1
X
IN
X
OUT
Ceramic
C2
C1
X
IN
X
OUT
CPU clock oscillation
frequency
4
–
25
MHz
External clock
X
IN
X
OUT
a
a
X
IN
input frequency
4
–
25
MHz
Table 18-9. Main Oscillator Clock Stabilization Time (t
ST1
)
(T
A
= -40
°
C + 85
°
C, V
DD
= 4.5 V to 5.5 V)
Oscillator
Crystal
Test Condition
Min
–
Typ
–
Max
10
Unit
ms
V
DD
= 4.5 V to 5.5 V
Stabilization occurs when V
DD
is equal to the minimum
oscillator voltage range.
X
IN
input high and low level width (t
XH
, t
XL
)
Ceramic
–
–
4
ms
External clock
50
–
–
ns
NOTE
:
Oscillation stabilization time (tST1) 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 ended by a
RESET
signal. The
RESET
should therefore
be held at low level until the tST1 time has elapsed.
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