參數(shù)資料
型號: M37640E8
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCONTROLLER
中文描述: 單芯片8位CMOS單片機
文件頁數(shù): 142/172頁
文件大?。?/td> 1193K
代理商: M37640E8
4-6
8/10/98
Frequency Synthesizer Interface
7600 Series
M37640E8-XXXF Preliminary Specification
Mitsubishi Microcomputers
4.4
Frequency Synthesizer Interface
All passive components should be in close proximity to pin 18 (LPF). The recommended values are as
follows:
See Figure 4-1 for a schematic of the LPF.
Figure 4-1. LPF Filter Schematic
Analog V
ss
and Analog V
dd
, pins 19 and 17 should have isolated connectors to the digital V
ss
and
V
dd
ground planes. Figure 4-2 illustrates the power supply isolation.
Figure 4-2. Power Supply Isolation
Table 4-2. Recommended Values
R
000
C2=680 pf
C1=0.1
μ
f
1/8 watt
10%
5 V
5 V
10%
10%
R
C1
C2
Pin 18
(LPF)
Pin 19
A
vss
Digital
V
dd
(on card)
Digital
V
ss
Analog
V
ss
(Pin 19)
Analog
V
dd
(Pin 17)
C
C
Decoupling
Capacitors
Ferrite Beads
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