Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

MB3793-34A Datasheet(PDF) 15 Page - Cypress Semiconductor

Part # MB3793-34A
Description  Precise detection of power voltage fall: ?깍?2.5%
Download  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

MB3793-34A Datasheet(HTML) 15 Page - Cypress Semiconductor

Back Button MB3793-34A Datasheet HTML 11Page - Cypress Semiconductor MB3793-34A Datasheet HTML 12Page - Cypress Semiconductor MB3793-34A Datasheet HTML 13Page - Cypress Semiconductor MB3793-34A Datasheet HTML 14Page - Cypress Semiconductor MB3793-34A Datasheet HTML 15Page - Cypress Semiconductor MB3793-34A Datasheet HTML 16Page - Cypress Semiconductor MB3793-34A Datasheet HTML 17Page - Cypress Semiconductor MB3793-34A Datasheet HTML 18Page - Cypress Semiconductor MB3793-34A Datasheet HTML 19Page - Cypress Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 15 / 26 page
background image
MB3793-34A
Document Number: 002-08556 Rev. *A
Page 15 of 26
7. When a certain period of time tWR has passed (until the CTP pin voltage reaches or exceeds Vth again after recharging the CTP),
the MB3793 cancels the reset signal and starts operating the watchdog timer.
The watchdog timer monitor reset time tWR is set with the following equation:
tWR (ms) D × CTP (F)
The value of D is 100 with VCC = 5.0 V.
The MB3793 repeats operations (4) and (5) as long as the CK1/CK2 pin inputs clock pulses. If no clock pulse is input, the MB3793
repeats operations (6) and (7).
8. If VCC is lowered to the fall-time detected voltage (VSL) or less, the CTP pin voltage decreases and the MB3793 outputs a reset
signal (setting the RESET pin to “L” level from “H” level).
The value of VSL is 3.40 V (Typ).
9. When VCC reaches or exceeds VSH again, the MB3793 starts charging the CTP.
10.When the CTP pin voltage reaches or exceeds Vth, the MB3793 cancels the reset and restarts operating the watchdog timer. It
repeats operations 4 and 5 as long as the CK1/CK2 pin inputs clock pulses.
11.Making the inhibit pin active (setting the INH pin to “H” from “L”) forces the watchdog timer to stop operation.
This stops only the watchdog timer, leaving the MB3793 monitoring VCC (operations 8 to 10).
The watchdog timer remains inactive unless the inhibit input is canceled.
The inhibition (INH) pin must be connecting a voltage of more low impedance, to evade of the noise.
12.Cancelling the inhibit input (setting the INH pin to “L” from “H”) restarts the watchdog timer.
13.The reset signal is output when the power supply is turned off to set VCC to VSL or less.
.
.
=
1.
Equation of time-setting capacitances (CTP and CTW) and set time
tPR [ms]
A × CTP [μF]
tWD [ms]
B × CTW [μF] + C × CTP [μF]
However, when CTP/CTW
10 or less, tWD [ms]
B × CTW [μF]
tWR [ms]
D × CTP [μF]
Values of A, B, C, and D
Note: The width of value of tPR, tWD and tWR becomes the same ratio as width (Min, Max) of each
specification value.
2. Example (when CTP = 0.1 μF and CTW = 0.01 μF)
ABCD
Remark
1300
1500
0
100
VCC = 5.0 V
time
(ms)
Symbol
VCC = 5.0 V
tPR
130
tWD
15
tWR
10
=
.
.
=
.
.
=
.
.
=
.
.
=
.
.


Similar Part No. - MB3793-34A

ManufacturerPart #DatasheetDescription
logo
Cypress Semiconductor
MB3793-34D CYPRESS-MB3793-34D Datasheet
781Kb / 24P
   Power-Voltage Monitoring IC with Watchdog Timer
More results

Similar Description - MB3793-34A

ManufacturerPart #DatasheetDescription
logo
Cypress Semiconductor
MB3793-27A CYPRESS-MB3793-27A Datasheet
610Kb / 30P
   Precise detection of power voltage fall: 2.5%
logo
STMicroelectronics
LIS2DH12 STMICROELECTRONICS-LIS2DH12 Datasheet
1Mb / 53P
   Free-fall detection
May 2017 Rev 6
logo
NXP Semiconductors
HEF4520BT-653 NXP-HEF4520BT-653 Datasheet
159Kb / 14P
   Tolerant of slow clock rise and fall times
Rev. 6-18 November 2011
logo
Figaro Engineering Inc.
FECS45-10 FIGARO-FECS45-10 Datasheet
328Kb / 2P
   Detection of Chlorine
TGS826 FIGARO-TGS826 Datasheet
82Kb / 2P
   Detection of Ammonia
TGS2611 FIGARO-TGS2611 Datasheet
278Kb / 2P
   Detection of Methane
logo
NXP Semiconductors
HEF4015BT-653 NXP-HEF4015BT-653 Datasheet
108Kb / 15P
   Tolerant of slow clock rise and fall times
Rev. 8-21 November 2011
HEC4013BT,118 NXP-HEC4013BT,118 Datasheet
128Kb / 17P
   Tolerant of slow clock rise and fall times
Rev. 8-21 November 2011
HEF4013BT-653 NXP-HEF4013BT-653 Datasheet
122Kb / 16P
   Tolerant of slow clock rise and fall times
Rev. 8-21 November 2011
logo
Figaro Engineering Inc.
FECS42-20 FIGARO-FECS42-20 Datasheet
348Kb / 2P
   Detection of Nitrogen Dioxide
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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