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RE46C145SW16F bảng dữ liệu(PDF) 8 Page - Microchip Technology

tên linh kiện RE46C145SW16F
Giải thích chi tiết về linh kiện  CMOS Photoelectric Smoke Detector ASIC with Interconnect and Timer Mode
PDF  26 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RE46C145SW16F bảng dữ liệu(HTML) 8 Page - Microchip Technology

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RE46C145
DS22181C-page 8
 2009-2012 Microchip Technology Inc.
2.9
Horn Feedback Pin (FEED)
Usually this pin is connected to the feedback electrode
through a current limiting resistor. If not used, this pin
must be connected to VDD or VSS.
2.10
LED Driver Pin (LED)
This pin is an open drain NMOS output used to drive a
visible LED.
2.11
Oscillator Capacitor Input (COSC)
A capacitor connected to this pin, with a parallel
resistor, sets the internal clock low time, which is
approximately the clock period.
2.12
Oscillator Resistor Drive Low
(ROSC)
A resistor between this pin and COSC pin sets the
internal clock high time. This also sets the IRED pulse
width (100 - 200 µs).
2.13
Hush Timer Sensitivity Pin (VSEN)
In Timer mode, this input pin can be used to set an
external smoke comparator reference.
2.14
TEST Pin
This input is used to invoke two test modes and the
Timer mode. This input has an internal pull-down.



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