công cụ tìm kiếm bảng dữ liệu linh kiện điện tử
  Vietnamese  ▼
ALLDATASHEET.VN

X  

MC145012DW bảng dữ liệu(PDF) 11 Page - Freescale Semiconductor, Inc

tên linh kiện MC145012DW
Giải thích chi tiết về linh kiện  Photoelectric Smoke Detector IC with I/O and Temporal Pattern Horn Driver
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC145012DW bảng dữ liệu(HTML) 11 Page - Freescale Semiconductor, Inc

Back Button MC145012DW Datasheet HTML 6Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 7Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 8Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 9Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 10Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 11Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 12Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 13Page - Freescale Semiconductor, Inc MC145012DW Datasheet HTML 14Page - Freescale Semiconductor, Inc  
Zoom Inzoom in Zoom Outzoom out
 11 / 14 page
background image
Sensors
Freescale Semiconductor
11
MC145012
CALIBRATION
To facilitate checking the sensitivity and calibrating smoke
detectors, the MC145012 can be placed in a calibration
mode. In this mode, certain device pins are controlled/
reconfigured as shown in Table 5. To place the part in the
calibration mode, Pin 16 (Test) must be pulled below the VSS
pin with 100
µA continuously drawn out of the pin for at least
one cycle on the OSC pin. To exit this mode, the Test pin is
floated for at least one OSC cycle.
In the calibration mode, the IRED pulse rate is increased
to one for every OSC cycle. Also, Strobe is always active low.
Figure 9. Recommended PCB Layout
Table 5. Configuration of Pins in the Calibration Mode
Description
Pin
Comment
I/O
7
Disabled as an output. Forcing this pin high places the photo amp output on Pin 1 or 2, as determined by Low-
Supply Trip. The amp's output appears as pulses and is referenced to VDD etc.
Low-Supply Trip
15
If the I/O pin is high, Pin 15 controls which gain capacitor is used. Low: normal gain, amp output on Pin 1. High:
supervisory gain, amp output on Pin 2.
Feedback
10
Driving this input high enables hysteresis (10% gain increase) in the photo amp; Pin 15 must be low.
OSC
12
Driving this input high brings the internal clock high. Driving the input low brings the internal clock low. If
desired, the RC network for the oscillator may be left intact; this allows the oscillator to run similar to the normal
mode of operation.
Silver
9
This pin becomes the smoke comparator output. When the OSC pin is toggling, positive pulses indicate that
smoke has been detected. A static low level indicates no smoke.
Brass
8
This pin becomes the smoke integrator output. That is, 2 consecutive smoke detections are required for “on”
(static high level) and 2 consecutive no-detections for “off” (static low level).
NOTES: Illustration is bottom view of layout using a DIP. Top view for SOIC layout is mirror image.
Optional potentiometer R9 is not included.
Drawing is not to scale.
Leads on D2, R11, R8, and R10 and their associated traces must be kept as short as possible. This practice minimizes noise
pick up.
Pin 3 must be decoupled from all other traces.
Do Not Run Any
Additional Traces
In This Region
PIN 8
Pin 16
Pin 9
Pin 1
R8
R11
D2
R14
C1
MOUNTED IN
CHAMBER


Số phần tương tự - MC145012DW

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Freescale Semiconductor...
MC145012DW FREESCALE-MC145012DW Datasheet
383Kb / 14P
   Photoelectric Smoke Detector IC with I/O and Temporal Pattern Horn Driver
More results

Mô tả tương tự - MC145012DW

nhà sản xuấttên linh kiệnbảng dữ liệuGiải thích chi tiết về linh kiện
logo
Freescale Semiconductor...
MC145012 FREESCALE-MC145012 Datasheet
383Kb / 14P
   Photoelectric Smoke Detector IC with I/O and Temporal Pattern Horn Driver
logo
Motorola, Inc
MC145018 MOTOROLA-MC145018 Datasheet
263Kb / 8P
   LONIZATION SMOKE DETECTOR IC WITH INTERCONNECT AND TEMPORAL HORN DRIVER
logo
Freescale Semiconductor...
MC145017 FREESCALE-MC145017_07 Datasheet
267Kb / 10P
   Low-Power CMOS Ionization Smoke Detector IC with Temporal Pattern Horn Driver
MC145017 FREESCALE-MC145017 Datasheet
225Kb / 8P
   Low-Power CMOS Ionization Smoke Detector IC with Temporal Pattern Horn Driver
MC145010 FREESCALE-MC145010 Datasheet
403Kb / 12P
   Photoelectric Smoke Detector IC with I/O
MC145018 FREESCALE-MC145018 Datasheet
229Kb / 8P
   Low-Power CMOS Ionization Smoke Detector IC with Interconnect and Temporal Horn Driver
MC145011 FREESCALE-MC145011 Datasheet
266Kb / 12P
   Photoelectric Smoke Detector IC with I/O For Line-Powered Applications
logo
SHANGHAI BELLING CO., L...
BL59A12 BELLING-BL59A12 Datasheet
271Kb / 8P
   PHOTOELECTRIC SMOKE DETECTOR IC
BL59A10 BELLING-BL59A10 Datasheet
244Kb / 8P
   PHOTOELECTRIC SMOKE DETECTOR IC
logo
Renesas Technology Corp
RAA239101 RENESAS-RAA239101 Datasheet
258Kb / 4P
   Photoelectric Smoke Detector AFE IC
Jun 27, 2022
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


bảng dữ liệu tải về

Go To PDF Page


Link URL




Chính sách bảo mật
ALLDATASHEET.VN
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không?  [ DONATE ] 

Alldatasheet là   |   Quảng cáo   |   Liên lạc với chúng tôi   |   Chính sách bảo mật   |   Trao đổi link   |   Tìm kiếm theo nhà sản xuất
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com