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SH79F6489P/080PR 데이터시트(PDF) 39 Page - SINOWEALTH Electronic Ltd

부품명 SH79F6489P/080PR
상세설명  Enhanced 8051 Microcontroller with 20bit Σ-ΔADC and LCD Driver
PDF  152 Pages
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제조업체  SINOWEALTH [SINOWEALTH Electronic Ltd]
홈페이지  https://en.sinowealth.com
Logo SINOWEALTH - SINOWEALTH Electronic Ltd

SH79F6489P/080PR 데이터시트(HTML) 39 Page - SINOWEALTH Electronic Ltd

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SH79F6488/SH79F6489
39
7.5.6 Oscillator Type
(1) OP_OSC = 0000: internal RC, XTAL and XTALX are shared with IO
XTALX1
XTALX2
XTAL1
XTAL2
(2) OP_OSC = 1010: 32.768kHz Crystal Oscillator at XTAL, Internal RC can be enabled, XTALX shared with I/O
XTALX1
XTALX2
XTAL1
XTAL2
C1
C2
32.768kHz
(3) OP_OSC = 1101: 32.768kHz Crystal Oscillator at XTAL, 400k - 16M Crystal/Ceramic Oscillator at XTALX
XTALX1
XTALX2
XTAL1
XTAL2
C1
C2
32.768kHz
C1
C2
Crystal/
Ceramic
7.5.7 Capacitor Selection for Oscillator
Ceramic Resonators
Frequency
C1
C2
455kHz
47 - 100pF
47 - 100pF
8MHz
8 - 15pF
8 - 15pF
16MHz
8 - 15pF
8 - 15pF
Crystal Oscillator
Frequency
C1
C2
32.768kHz
5 - 12.5pF
5 - 12.5pF
8MHz
8 - 15pF
8 - 15pF
16MHz
8 - 15pF
8 - 15pF
Notes:
(1) Capacitor values are used for design guidance only!
(2) These capacitors were tested with the crystals listed above for basic start-up and operation. They are not optimized.
(3) Be careful for the stray capacitance on PCB board, the user should test the performance of the oscillator over the expected
VDD and the temperature range for the application.
Before selecting crystal/ceramic, the user should consult the crystal/ceramic manufacturer for appropriate value of external
component to get best performance, visit http://www.sinowealth.com for more recommended manufactures.



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