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| Z8FS040 Datasheet, PDF (49/56 Pages) Zilog, Inc. – ZMOTION Detection and Control Family Featuring Zilog’s PIR Technology | |||
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ZMOTIONTM Detection and Control Family
Product Specification
Z8FS040xHJ20EG - (28 Pin)
Single Pyroelectric Sensor
Figure 13 shows an example circuit for the 28 pin device of the ZMOTIONTM Detection and
Control MCU Family with a single Pyroelectric sensor. The interface to the pyroelectric sensor
is via the dedicated input ANA2 (pin 1). VREF (pin 3) must be externally tied to ANA3 (pin 4).
The status LED is driven by pin 26 (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 22 is dedicated as
the Debug pin and is connected to pin 4 of the Debug Header. Pin 21 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
Pyro Electric
Sensor
VDD
SIG
GND
47K
VDD (3.3V)
1uF
VDD (3.3V)
Status LED
1 ANA2
2 PB4/ANA7
3 PB5/VREF
4 ANA3
5 AVDD
6 VDD
7 PA0/T0IN/T0OUT/XIN
8 PA1/T0OUT/XOUT
9 VSS
10 AVSS
11 PA2/DE0
12 PA3/CTS0
13 PA4/RXD0
14 PA5/TXD0
PB1/ANA1 28
PB0/ANA0 27
PC3/COUT 26
PC2/ANA6 25
PC1/ANA5/CINN 24
PC0/ANA4/CINP 23
DBG 22
21
RESET/PD0
PC7 20
PC6 19
PA7/T1OUT 18
PC5 17
PC4 16
PA6/T1IN/T1OUT 15
Z8FS040xHH020EG
VDD (3.3V)
Debug Header
10K
10K
1 VCC
2 RESET
3 GND
4 DBG
5 GND
6 NC
Figure 13 - Required Circuit Connections of Z8FS040xHJ20EG
(28 Pin) Motion Detection MCU â Single Pyro Mode
PS028506-1110
PRELIMINARY
44
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