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Z8FS021 Datasheet(PDF) 63 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) 63 Page - Zilog, Inc.

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PS028806-0315
Appendix A. Example Application Schematics
ZMOTION® Intrusion Detection
Product Specification
55
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 3 and PIR_ASC0 bit 7 would be set to 1.
All other connections remain the same as Single Pyro Mode. See Figure 11.
Figure 11. Required Circuit Connections for the Z8FS021xHJ20EG (28-Pin) ZMOTION Intrusion
Detection MCU, Dual Pyro Mode
10K
VDD (3.3V)
1
2
3
4
5
6
VCC
RES ET
GND
DBG
GND
NC
Debug Header
10K
VDD (3.3V )
1uF
Z8FS021xHH20EG
1
2
3
4
22
24
23
25
VDD
6
5
7
10
28
27
26
21
20
19
8
9
PB1/ANA1
ANA2
ANA3
PA0/T0IN/T0OUT/X IN
VSS
PA 1/T0OUT/X OUT
PA2/DE0
PA4/RXD0
PA3/CTS0
PB0/ANA0
PC3/COUT
PB5/VRE F
PC1/ANA5/CINN
PC0/ANA4/CINP
DBG
PA 7/T1OUT
PA5/T XD0
RE SE T/PD0
PA6/T1IN/T1OUT
11
14
12
13
18
17
16
15
PB4/ANA7
AV DD
AVSS
PC5
PC4
PC6
PC7
PC2/ANA 6
1uF
47K
Pyro Electric
Sensor 1
VDD
GND
SIG
VDD (3.3V)
470
Status LED &
WhiteL ight
Detection
47K
Pyro Electric
Sensor 2
VDD
GND
SIG



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