ACS8520 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8520' PDF : 150 Pages View PDF
ADVANCED COMMUNICATIONS
Application Information
Figure 31 Simplified Application Schematic
FINAL
ACS8520 SETS
DATASHEET
P1
5v
0v
term_connect
VDD5v
IC2
EZ1086CT-3.3
VDD
3
2
VIN
1
VOUT
GND
(+)
100uF
C2
(+)
100nF
C4
C3
10uF_TANT
C7
100nF
ZD1
BZV90C-5.6v
Decoupling capacitor, C21 should be placed close to the xtal
pins that are being decoupled
CC parts are easily cut links that can also take SM
capacitors or Ohm resistor links.
All tcxo options to be placed as close as possible to IC1,
with short output track.
DGND
VDD2
VDD3
VDDA
AGND
DGND3
DGND2
Power supply and ground
connections to 'star'
connect back to these
decoupling capacitors at
the regulator and only
connect together at this
point
O1
O2
O3
O4
O5
O9
DGND
VDD
txco
12.8MHz
AGND
VDDA
R1
C10
100nF
C21
100nF
X1
2 vdd
3 gnd1
Vectron
output
10R
VDD3
1
gnd2
5
4 optn
VDDA
C11
100nF
R6 DGND3
10R C12
100nF
DGND
AGND
C5
10uF_TANT
VDD2
C6
100nF
(+)
DGND2
VDDA
AGND
1 AGND
2 TRST
3 IC1
4 IC2
5 AGND1
6 VA1+
7 TMS
8 INTREQ
9 TCK
10 REFCLK
11 DGND1
12 VD1+
13 VD3+
14 DGND3
15 DGND2
16 VD2+
17 IC3
18 SRCSW
19 VA2+
20 AGND2
21 TDO
22 IC4
23 TDI
24 I1
25 I2
C23
100n
T1
Pe-68865
R41
optn
R38
optn
optn
C22
O8P
DGND2
C16
C17
470nF 470nF
I1
I2
DGND
Optional Processor/EPROM
interface type selection
Int
SrSwit
RDY RDB CSB
ALE WRB
Optional EPROM interface
selection
VDD
C29
100nF
C9
100nF
IC1
ACS8520
DGND
RDY 75
PORB 74
ALE 73
RDB 72
WRB 71
CSB 70
A0 69
A1 68
A2 67
A3 66
A4 65
A5 64
A6 63
DGNDd 62
VDDd 61
UPSEL0 60
UPSEL1 59
UPSEL2 58
I14 57
I13 56
I12 55
I11 54
I10 53
I9 52
I8 51
C8
1nF
DGND
All decoupling capacitors, C29,
C9, C13, C14, C15, C6, C5,
C12, C11, C10,C32 should be
placed close to the IC1 pins that
are being decoupled
VDD
100nF
C13
DGND
UPSEL0
UPSEL1
UPSEL2
Optional
Processor
interface type
selection
VDD2
VDD2
C15
100nF
C32
100nF
DGND2
DGND2
VDD
C14
100nF
DGND
I4
I8
I10
I12
I14
I3
I7
I9
I11
I13
DGND
F8520D_031EvalBdSchem_01
Revision 3.02/October 2005 © Semtech Corp.
Page 145
www.semtech.com
Share Link: 
