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Z8FS021 bảng dữ liệu(PDF) 51 Page - Zilog, Inc.

tên linh kiện Z8FS021
Giải thích chi tiết về linh kiện  Select from an assortment of lenses and pyroelectric sensors to best fit your application
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Z8FS021 bảng dữ liệu(HTML) 51 Page - Zilog, Inc.

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PS028806-0315
Advanced API Register Set
ZMOTION® Intrusion Detection
Product Specification
43
Table 26 summarizes the maximum Noise Sensitivity values for each window size.
Table 26. Maximum Noise Sensitivity Values
Window Size
Max PIR Noise Sensitivity
Value
Typical Value
Small
0Ch
08h
Medium
1Dh
12h
Large
46h
2D
Table 27. PIR Signal
(ePIR_Signal)
Bit
15
14
13
12
11
10
9876543210
Field
PIR Signal
Control
Read
Address
FAH
FBH
PIR Signal (Bits 15–0)
Controlled by the PIR Engine.
• These registers contain the last PIR signal obtained by the Engine. Each time the Engine generates
a new PIR signal sample it will place it in these registers and set the New Sample bit in the PIR
Advanced Status/Control 0 Register. This gives the application direct visibility to the PIR generated
signal for debugging purposes.
• Note: The 16 bit value provided by these two 8 bit registers must be read as an atomic operation by
the application. This can be ensured by either using the CPU's ATM instruction or by disabling
interrupts while reading the two 8 bit registers.



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