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Z8FS021 Datasheet(PDF) 60 Page - Zilog, Inc.

No. de pieza Z8FS021
Descripción Electrónicos  Select from an assortment of lenses and pyroelectric sensors to best fit your application
PDF  68 Pages
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Fabricante Electrónico  ZILOG [Zilog, Inc.]
Página de inicio  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z8FS021 Datasheet(HTML) 60 Page - Zilog, Inc.

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PS028806-0315
Appendix A. Example Application Schematics
ZMOTION® Intrusion Detection
Product Specification
52
Dual Pyroelectric Sensors
In Dual Pyro mode, the second pyroelectric sensor is connected to ANA3. The signal from
VREF to ANA3 is not required. In this design example, the internal VREF is used with
PIR_ASC0 bit 7 set to '0'. The user could choose to use an externally generated VREF
source in which case it would be connected to pin 18 and PIR_ASC0 bit 7 would be set to
'1'. All other connections remain the same as Single Pyro Mode. See Figure 9.
Figure 9. Example Circuit with the Z8FS021xHH20EG (20-Pin) ZMOTION Intrusion Detection MCU,
Dual Pyro Mode
10K
VDD(3.3V)
1
2
3
4
5
6
VCC
RESET
GND
DBG
GND
NC
Debug Header
Z8FS021xHH20EG
1
2
3
4
14
16
15
17
VDD
6
5
7
10
20
19
18
13
12
11
8
9
PB1/ANA1
ANA2
ANA3
PA0/T0IN/T0OUT/XIN
VSS
PA 1/T0OUT/XOUT
PA2/DE0
PA4/RXD0
PA 3/CTS0
PB0/ANA0
PC3/COUT
PC2/ANA6/LED/V
REF
PC1/ANA5/CINN
PC0/ANA4/CINP
DBG
PA7/T1OUT
PA5/TXD0
RESET/PD0
PA6/T1IN/T1OUT
10K
VDD (3.3V)
1uF
1uF
47K
Pyro Electric
Sensor 1
VDD
GND
SIG
470
VDD (3.3V)
Status LED &
White Light
Detection
1uF
47K
Pyro Electric
Sensor 2
VDD
GND
SIG
VDD (3.3V)



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