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Z8FS040 Datasheet, PDF (47/56 Pages) Zilog, Inc. – ZMOTION Detection and Control Family Featuring Zilog’s PIR Technology
ZMOTIONTM Detection and Control Family
Product Specification
Z8FS040xHH20EG - (20 Pin)
Single Pyroelectric Sensor
Figure 11 shows an example circuit for the 20 pin device of the ZMOTIONTM Detection and
Control MCU Family with a single Pyro Electric sensor. The interface to the pyroelectric sensor
is via the dedicated input ANA2 (pin 2). VREF (pin 18) must be externally tied to ANA3 (pin 3).
The status LED is driven by pin 19 (PC3/COUT) which is normally configured as a GPIO by
the application to control the state of the LED. This pin provides a programmable constant
current sink specifically for LED drive without using an external resistor. Pin 15 is dedicated as
the Debug pin and is connected to pin 4 of the Debug Header. Pin 14 is set up for the Reset
function, but may also be used as PD0 (general purpose I/O) as the application requires. Pull-
up resistors (10K) are provided on the Debug and Reset signals as required for the Debug
interface. All other signals may be used as needed. The power supply design is left to the
application needs.
VDD (3.3V)
1uF
VDD (3.3V)
Pyro Electric
Sensor
VDD
SIG
47K
GND
1uF
VDD (3.3V)
Status LED
1 PB1/ANA1
PB0/ANA0 20
2 ANA2
PC3/COUT 19
3 ANA3
4 VDD
PC2/ANA6/LED/VREF 18
PC1/ANA5/CINN 17
5 PA0/T0IN/T0OUT/XIN PC0/ANA4/CINP 16
6 PA1/T0OUT/XOUT
DBG 15
7 VSS
8 PA2/DE0
14
RESET/PD0
PA7/T1OUT 13
9
PA3/CTS0
10 PA4/RXD0
PA6/T1IN/T1OUT 12
PA5/TXD0 11
Z8FS040xHH020EG
VDD (3.3V)
10K
10K
Debug Header
1 VCC
2 RESET
3 GND
4 DBG
5 GND
6 NC
Figure 11 - Required Circuit Connections of Z8FS040xHH20EG
(20 Pin) Motion Detection MCU – Single Pyro Mode
PS028506-1110
PRELIMINARY
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