BL35P02 View Datasheet(PDF) - Shanghai Belling Co., Ltd.
Part Name
Description
MFG CO.
'BL35P02' PDF : 27 Pages View PDF
上海贝岭股份有限公司
Shanghai Belling Co., Ltd.
6．Function Description
6.1 Instructions
See Section 7 for details on the instructions.
BL35P02 DATASHEET
6.2 Address Spaces
$0000-$000F：Control registers
$0010-$00DF：Reserved
$00E0-$00FF：RAM
$0100-$17FF：Reserved
$1800-$1FFF：OTP ROM
6.3 Crystal Oscillator
6.3.1 High frequency Oscillator
Simplified external crystal/ceramic oscillator circuits are shown in Figure 6.3.1.1. An external crystal or
ceramic oscillation source provides 355KHz~8MHz. The load capacitor Cx which values used in the oscillator
circuit design should include all stray capacitance is necessary, but frequency is more than 3.5MHz, Cx can be
removed. The crystal and components should be mounted as close as possible to the pins for start-up
stabilization and to minimize output distortion.
OSCI OSCO
Cx
Cx
Frequency
8MHz
4MHz
3.64MHz
Value of Cx
0/15p
0/15p/30p
0/15p/30p
O scillator
Figure 6.3.1.1
6.3.2 455KHz Oscillator
Using 455KHz crystal/ceramic oscillation is shown Figure 6.3.2.1，generally OSCI/OSCO must be
connected external 200pF capacitor. Otherwise OSCO can be connected 2KΩ to 5KΩ resistor that can be
used by carbon film resistor.
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Figure 6.3.2.1
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