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參數(shù)資料
| 型號： | MC68HC05E16CFU |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16256 bytes of user ROM, 320bytes of EPROM and 352 bytes of RAM |
| 中文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁數(shù)： | 17/96頁 |
| 文件大小： | 3045K |
| 代理商： | MC68HC05E16CFU |
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Freescale
2-4
MC68HC05SR3
PIN DESCRIPTIONS
2
2.2.3
RC Oscillator Option
This configuration is intended to be the lowest cost option in applications where oscillator accuracy
is not important. An internal constant current source and a capacitor have been integrated on-chip,
connected between the OSC2 pin and VSS. Thus by either connecting a resistor to VDD from
OSC2 or by putting a wire strap between OSC1 and OSC2 self-oscillations at the frequency as
shown in Figure 2-2 and Figure 2-3 can be induced.
Figure 2-2 Typical Oscillator Frequency for Selected External Resistor
Figure 2-3 Typical Oscillator Frequency for Wire-Strap Connection
60
30
40
50
70
90
100
110
80
4.0
3.5
3.0
2.5
2.0
1.5
Resistance (K)
O
scill
ator
Frequen
cy
(M
Hz)
3.5
2.0
2.5
3.0
4.0
5.0
5.5
6.0
4.5
2.25
2.00
1.75
1.50
1.25
1.00
VDD (V)
Oscillator
F
requency
(M
Hz)
T=0°C
T=25°C
T=50°C
TPG
22
05SR3.Book Page 4 Thursday, August 4, 2005 1:08 PM
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| MC68HC05E16FB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16256 bytes of user ROM, 320bytes of EPROM and 352 bytes of RAM |
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