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PTK8756 데이터 시트보기 (PDF) - Unspecified
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PTK8756
8 Bit Micro-controller
Unspecified
PTK8756 Datasheet PDF : 20 Pages
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PTK8756 Data Sheet
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14. PTK8756 RC 振盪頻率
–
建議阻值表
14.1 RC 振盪
示意圖
OSCI
PAD
OSCO
PAD
3V
R
C
外接電阻 R
6.2 K
Ω
11 K
Ω
15 K
Ω
27 K
Ω
56 K
Ω
130 K
Ω
1.8 M
Ω
外接電容 C
22 pF
22 pF
22 pF
22 pF
22 pF
22 pF
22 pF
OSCO(OSCI)振盪頻率
1.58MHz (6.32MHz)
0.99MHz (3.96MHz)
821KHz (3.28MHz)
493KHz (1.97MHz)
249.2KHz (997KHz)
111.6KHz (446.4KHz)
7.87KHz (31.48KHz)
示意圖
外接電阻 R 外接電容 C OSCO(OSCI)振盪頻率
OSCI
PAD
R
C
OSCO
PAD
5V
8.2 K
Ω
13 K
Ω
15 K
Ω
27 K
Ω
56 K
Ω
130 K
Ω
22 pF
22 pF
22 pF
22 pF
22 pF
22 pF
1.528MHz (6.112MHz)
1.022MHz (4.088MHz)
896KHz (3.584MHz)
515KHz (2.060MHz)
257.2KHz (1.028MHz)
111.75KHz (447.0KHz)
1.8 M
Ω
22 pF
8.01KHz (32.04KHz)
a. 振盪電容擺放位置,必須盡量靠近 OSCI。
b. 振盪電容接 GND 線,請貼近主要 GND 區域,且 GND 線越粗越好。
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