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| 型號： | HE847701 |
| 廠商： | King Billion Electronics Co., Ltd. |
| 英文描述： | 8-bit Micro-controller |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 15/29頁 |
| 文件大小： | 438K |
| 代理商： | HE847701 |
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King Billion Electronics Co., Ltd
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HE847701
HE80000 SERIES
The RC oscillator has a built-in capacitor. An external resistor is needed to connect from FXI to GND to
March 26, 2004
This specification is subject to change without notice. Please contact sales person for the latest version before use.
Page 15 of 29
V1.03
determine the oscillation frequency. The capacitance of internal RC oscillator is selected by mask option
MO_RCAP[2..0].
MO_RCAP[2..0] Internal RC Cap. OSC. (pF)
000
001
010
011
100
101
110
111
2
4
7
14
20
40
50
60
The following table shows the combinations of R and C, and the resulting frequency. Please note that
oscillation frequency in the table only represents oscillation frequencies of certain samples. The actual
oscillation frequency may vary up to
±
15% from lot to lot due to process parameter variations. User must
take this into consideration when using this chip in applications.
Ring Oscillator Frequency Table
R(K ohm
)\
C (pF)
30.20
19.92
9.98
40
0.8
1.2
2.3
20
1.5
2.2
4.0
14
2.0
2.8
5.1
7
3.0
4.4
7.5
4
4.0
5.6
9.4
2
5.0 MHz
7.0 MHz
11.4 MHz
Two types of oscillator, crystal and RC, can be used as slow clock by mask option MO_SXTAL. If used
for time keeping function or other applications that required the accurate timing, crystal oscillator is
recommended. If the timing accuracy is not important, then RC type oscillator can be used to reduce cost.
MO_SXTAL
0
1
Slow clock type
R/C oscillator
Crystal oscillator
SXI
SXI
SXO
SXO
Crystal Osc.
RC Osc.
With two clock sources available, the system can switch among operation modes of Fast, Slow, Idle, and
Sleep modes by the setting of OP1 and OP2 registers as shown in tables below to suit the needs of
application such as power saving, etc.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| HE847701(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE84770C(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE84770D | 制造商:KB 制造商全稱:KB 功能描述:8-bit Micro-controller |
| HE84771(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE847711(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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