Z8FS040 Datasheet, PDF (46/56 Pages) Zilog, Inc. – ZMOTION Detection and Control Family Featuring Zilog’s PIR Technology

ZMOTION^TM Detection and Control Family
Product Specification
Appendix A
Example Application Schematics
Z8FS040xSB20EG - (8 Pin)
Figure 10 shows an example circuit for the 8 pin device of the ZMOTION^TM Detection and
Control MCU Family. The interface to the pyroelectric sensor is via the dedicated input ANA2
(pin 5). The status LED is driven by pin 6 which is normally configured as a GPIO by the
application to control the state of the LED. Pin 2 is used as the debug input to the chip, but can
be used for other functions as required. Pin 4 is set up for the Reset function, but may also be
used for other functions as the application requires. Pull-up resistors (10K) are provided on the
Debug and Reset signals as required for the Debug interface. The signals on pins 3 and 7 can
be used as needed. The power supply design is left to the application needs.
In Dual Pyro mode, the second Pyroelectric sensor is connected to Pin 3 (ANA3). All other
connections remain the same.
VDD (3.3V)
1uF
Debug Header
VCC ¹
RESET ²
GND ³
DBG ⁴
GND ⁵
NC ⁶
10K 10K
1 _VDD
VSS ⁸
2 _{PA0/T0IN/T0OUT/XIN//DBG}
PA5/TXD0/T1OUT/ANA0/CINP ⁷
3 _{PA1/T0OUT/XOUT/ANA3/VREF/CLKIN PA4/RXD0/ANA1/CINN} 6
4 _{PA2/RESET/DE0/T1OUT}
ANA2 ⁵
Z8FS040xSB20EG
VDD (3.3V)
To Second Pyro Electric
Sensor in Dual Pyro Mode
1uF
Pyro Electric
VDD
Sensor
SIG
GND
470
Status LED
47K
Figure 10 - Required Circuit Connections of Z8FS040xSB20EG
(8 Pin) Motion Detection MCU
PS028506-1110
PRELIMINARY
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