EEWORLDEEWORLDEEWORLD

Part Number

Search

FM1233AC

Description
3-Pin C Supervisor Circuit
File Size62KB,7 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Download Datasheet Compare View All

FM1233AC Overview

3-Pin C Supervisor Circuit

FM1233A 3-Pin µC Supervisor Circuit
September 2004
FM1233A
3-Pin µC Supervisor Circuit
General Description
The FM1233A is a supervisor circuit that monitors a micropro-
cessor power supply or other system voltage and issues a reset
pulse when a fault condition exists. Several different threshold
voltages are offered to accommodate 3.3V and 3.0V systems
with different tolerances.
FM1233A features a precision temperature-compensated volt-
age reference and comparator. When V
CC
falls to the threshold
voltage, a RESET pulse is issued, holding the output in the
active state. When power rises above V
TH
, the reset remains
asserted for a minimum period (t
RST
) to allow the system clock
and other circuits to stabilize. The reset output of FM1233A is of
open-drain active low type.
The FM1233A also can monitor a switch closure on its output,
enabling it to recognize an external reset from a pushbutton
switch or a µP. In the case of a switch, the closure will be
debounced by circuitry internal to the FM1233A.
Features
Precision monitoring of 3.3V and lower voltage
microprocessor systems
V
TH
values of 3.08V, 2.88V and 2.72V
Automatic restart of microprocessor after power failure
Reset Timeout Period Choice:
– Options AC and AD: 140ms (min)/256ms (typ)
– Option ABA: 17ms (min)/32ms (typ)
– Available on request: 64ms (typ) and 128ms (typ)
Internal 5k
pull-up resistor
Operating Temperature -40°C to +105°C
Monitors external pushbutton override
Internal switch debounce circuitry
SOT23-3 package
Typical Operating Circuit
V
CC
3
FM1233A
Controller
1
GND
2
RESET
Connection Diagram
GND
1
FM1233A
3
V
CC
RESET
2
SOT23-3 Package
©2004 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
FM1233A Rev. E

FM1233AC Related Products

FM1233AC FM1233AD
Description 3-Pin C Supervisor Circuit 3-Pin C Supervisor Circuit
Why can the .out file run even though it has unresolved symbols?
A simple program: #include "stdioLib.h" int main() { char a1[10]; char a2[10]="123456789"; memcpy(a1,a2,10); printf(a1); return 1; } After compiling and generating the .out file, use the objdumppentiu...
cgl123456 Embedded System
Inverter Refrigerator Control Solution
Inverter Refrigerator Control Solution...
lorant Industrial Control Electronics
What to do with the real estate certificate if the developer runs away? Lawyers give advice on how to obtain the certificate through litigation
Question How can the hard-earned money for buying a house go to waste? [img]http://news.xinhuanet.com/house/2008-03/05/xin_552030505144164054143.jpg[/img] Xiao Wang, who came to Beijing from other pla...
jiaju3721 Talking
I really feel like my hands cramp from deleting posts
Is there a better way to solve this problem? Is someone trying to trick us? Ximen has even become the number one swearer! But swearing is not the solution to solve the problem!These are all advertisem...
DIAG Talking
What you need to know about embedded learning
Embedded systems include almost all electrical appliances in life, such as handheld PDAs, mobile computing devices, TV set-top boxes, mobile Internet access, digital TV, multimedia, automobiles, micro...
zde Microcontroller MCU
Please tell me how I should design this waveform generation and control circuit
Hello everyone! I want to design a circuit that can generate two synchronous waveforms, and trigger a data acquisition card to collect data when the waveform reaches a certain point. Which one should ...
武帝座一 FPGA/CPLD

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2665  1176  1982  2336  209  54  24  40  48  5 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号