Z8FS021 Datasheet, PDF(63/68 Page) Zilog, Inc. – Select from an assortment of lenses and pyroelectric sensors to best fit your application

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

Z8FS021 Datasheet, PDF (63/68 Pages) Zilog, Inc. – Select from an assortment of lenses and pyroelectric sensors to best fit your application

◁

ZMOTIONÂ® Intrusion Detection

Product Specification

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.

VDD (3.3V)

1uF

Pyro Electric

Sensor 1

VD D

SI G

47K

GND

V DD (3. 3V )

1uF

Pyr o Electric

Sensor 2

VDD

SI G

47K

GND

Status LED &

WhiteL ight

Detection

470

1 ANA2

2 P B4/A NA7

3 PB5/ VRE F

4 ANA3

5 AV DD

6 VDD

7 PA0/ T0IN/T0OUT/X IN

8 PA 1/T0OUT/X OUT

9 V SS

10 AVS S

11 P A2/DE0

P A3/CTS 0

13 P A4/RXD0

14 P A5/T XD0

PB 1/ANA1 28

PB 0/ ANA0

P C3/ COUT 26

PC2/A NA 6 25

P C1/ ANA5/CI NN 24

P C0/ ANA4/CINP 23

DBG 22

RE SE T/PD0

PC7 20

PC6 19

PA 7/T1OUT 18

PC5 17

PC4 16

PA6/ T1IN/T1OUT 15

Z 8FS021xHH20EG

VDD (3.3V)

10K

Debug Header

1 V CC

2 RES ET

3 GND

4 DBG

5 GND

6 NC

Figure 11. Required Circuit Connections for the Z8FS021xHJ20EG (28-Pin) ZMOTION Intrusion

Detection MCU, Dual Pyro Mode

PS028806-0315

Appendix A. Example Application Schematics

▷