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EM78P451SWM Datasheet(PDF) 43 Page - ELAN Microelectronics Corp

Part # EM78P451SWM
Description  8-Bit Microcontroller with OTP ROM
PDF  54 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P451SWM Datasheet(HTML) 43 Page - ELAN Microelectronics Corp

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EM78P451S
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 06.01.2004
• 39
(This specification is subject to change without further notice)
OSCI
OSCO
EM 78P451S
Ext. Clock
Fig. 18 Circuit for External Clock Input
OSCI
OSCO
EM 78P451S
C1
C2
XTAL
RS
Fig. 19 Circuit for Crystal/Resonator
Table 11 Capacitor Selection Guide for Crystal Oscillator Ceramic Resonators
Oscillator Type
Frequency Mode
Frequency
C1 (pF)
C2 (pF)
455 KHz
10~150
10~150
1.0 MHz
40~80
40~80
2.0 MHz
20~40
20~40
Ceramic Resonator
HXT
4.0 MHz
10~30
10~30
32.768 KHz
25
15
100 KHz
25
25
LXT
200 KHz
25
25
455 KHz
20~40
20~150
1.0 MHz
15~30
15~30
2.0 MHz
15
15
Crystal Oscillator
HXT
4.0 MHz
15
15



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