Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

TC1272AZVNBTR Datasheet(PDF) 4 Page - Microchip Technology

Part # TC1272AZVNBTR
Description  3-Pin Reset Monitor
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC1272AZVNBTR Datasheet(HTML) 4 Page - Microchip Technology

  TC1272AZVNBTR Datasheet HTML 1Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 2Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 3Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 4Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 5Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 6Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 7Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 8Page - Microchip Technology TC1272AZVNBTR Datasheet HTML 9Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 12 page
background image
TC1272A
DS21877A-page 4
 2004 Microchip Technology Inc.
3.0
APPLICATIONS INFORMATION
3.1
VDD Transient Rejection
The TC1272A provides accurate VDD monitoring and
reset timing during power-up, power-down and brown-
out/sag conditions. These devices also reject negative-
going transients (glitches) on the power supply line.
Figure 3-1 shows the maximum transient duration vs.
maximum negative excursion (overdrive) for glitch
rejection. Any combination of duration and overdrive
that lies under the curve will not generate a reset
signal.
FIGURE 3-1:
Maximum Transient
Duration vs. Overdrive for Glitch Rejection at
+25°C.
Combinations above the curve are detected as a
brown-out or power-down condition. Transient immu-
nity can be improved by adding a capacitor in close
proximity to the VDD pin of the TC1272A.
3.2
RESET Signal Integrity During
Power-Down
The TC1272A RESET output is valid to VDD = 1.0V.
Below this voltage, the output becomes an "open cir-
cuit" and does not sink current. This means CMOS
logic inputs to the microcontroller will be floating at an
undetermined voltage. Most digital systems are com-
pletely shut down well above this voltage. However, in
situations where RESET must be maintained valid to
VDD = 0V, a pull-down resistor must be connected from
RESET to ground to discharge stray capacitances and
hold the output low (Figure 3-2). This resistor value,
though not critical, should be chosen such that it does
not appreciably load RESET under normal operation
(100 k
Ω will be suitable for most applications).
FIGURE 3-2:
The addition of R1 at the
RESET output of the TC1272A ensures that the
RESET output is valid to VDD = 0V.
Reset Comparator Overdrive
[V
TH - VDD] (mv)
400
240
160
320
80
0
1
5
100
1000
T
A = +25°C
V
TH
Duration
Overdrive
V
DD
TC1272A/L/M/J
TC1272A/Z/R/S/T
[V
TH - VDD] (mv)
30
40
50
60
70
80
90
100
110
120
130
1
10
100
1000
Reset Comparator Overdrive (mV)
TC1272A/L/M/J
TC1272A/Z/R/S/T
TC1272A
V
DD
V
DD
R1
100 k
RESET
GND


Similar Part No. - TC1272AZVNBTR

ManufacturerPart #DatasheetDescription
logo
Microchip Technology
TC1272A MICROCHIP-TC1272A Datasheet
208Kb / 14P
   3-Pin Reset Monitor
11/29/12
More results

Similar Description - TC1272AZVNBTR

ManufacturerPart #DatasheetDescription
logo
Microchip Technology
TC1272A MICROCHIP-TC1272A Datasheet
208Kb / 14P
   3-Pin Reset Monitor
11/29/12
logo
E-CMOS Corporation
EC95809 E-CMOS-EC95809 Datasheet
246Kb / 6P
   3-Pin Microprocessor Reset Monitor
logo
Seaward Electronics Inc...
SE810 SEAWARD-SE810 Datasheet
209Kb / 6P
   3-Pin Microprocessor Reset Monitor
logo
YOBON TECHNOLOGIES,INC.
YB1921 YOBON-YB1921 Datasheet
149Kb / 5P
   3-Pin Microprocessor Reset Monitor
logo
Seaward Electronics Inc...
SE809 SEAWARD-SE809 Datasheet
184Kb / 5P
   3-Pin Microprocessor Reset Monitor
logo
List of Unclassifed Man...
CYT809 ETC2-CYT809 Datasheet
170Kb / 4P
   3-Pin Microprocessor Reset Monitor (Preliminary)
logo
Seaward Electronics Inc...
SE811 SEAWARD-SE811 Datasheet
235Kb / 8P
   4-Pin Microprocessor Reset Monitor
logo
ON Semiconductor
MAX803 ONSEMI-MAX803_07 Datasheet
108Kb / 10P
   Very Low Supply Current 3-Pin Microprocessor Reset Monitor
October, 2007 - Rev. 4
MAX803 ONSEMI-MAX803 Datasheet
86Kb / 9P
   Very Low Supply Current 3-Pin Microprocessor Reset Monitor
March, 2006 ??Rev. 0
NCP803 ONSEMI-NCP803 Datasheet
55Kb / 8P
   Very Low Supply Current 3-Pin Microprocessor Reset Monitor
May, 2003 - Rev. 4
More results


Html Pages

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


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