EEWORLDEEWORLDEEWORLD

Part Number

Search

CAT1023PI-45-TE13

Description
Monitoring circuit 2K bit 4.5V ind temp
Categorysemiconductor    Other integrated circuit (IC)   
File Size197KB,21 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Download Datasheet View All

CAT1023PI-45-TE13 Overview

Monitoring circuit 2K bit 4.5V ind temp

CAT1021, CAT1022, CAT1023
Supervisory Circuits with I
2
C Serial 2k-bit CMOS
EEPROM, Manual Reset and Watchdog Timer
FEATURES
Precision Power Supply Voltage Monitor
— 5 V, 3.3 V and 3 V systems
— Five threshold voltage options
Watchdog Timer
Active High or Low Reset
— Valid reset guaranteed at V
CC
= 1 V
400 kHz I
2
C Bus
2.7 V to 5.5 V Operation
Low power CMOS technology
16-Byte Page Write Buffer
Built-in inadvertent write protection
— WP pin (CAT1021)
1,000,000 Program/Erase cycles
Manual Reset Input
100 year data retention
Industrial and extended temperature ranges
8-pin DIP, SOIC, TSSOP, MSOP or TDFN
(3 x 3 mm foot-print) packages
— TDFN max height is 0.8 mm
DESCRIPTION
The CAT1021, CAT1022 and CAT1023 are complete
memory and supervisory solutions for microcontroller-
based systems. A 2k-bit serial EEPROM memory and a
system power supervisor with brown-out protection are
integrated together in low power CMOS technology.
Memory interface is via a 400 kHz I
2
C bus.
The CAT1021 and CAT1023 provide a precision V
CC
sense circuit and two open drain outputs: one (RESET)
¯¯¯¯¯¯
drives high and the other (RESET) drives low whenever
V
CC
falls below the reset threshold voltage. The
¯¯¯¯¯¯
CAT1022 has only a RESET output and does not have
a Write Protect input. The CAT1021 also has a Write
Protect input (WP). Write operations are disabled if WP
is connected to a logic high.
All supervisors have a 1.6 second watchdog timer circuit
that resets a system to a known state if software or a
hardware glitch halts or “hangs” the system. For the
CAT1021 and CAT1022, the watchdog timer monitors
the SDA signal. The CAT1023 has a separate watchdog
timer interrupt input pin, WDI.
The power supply monitor and reset circuit protect
memory and system controllers during power up/down
and against brownout conditions. Five reset threshold
voltages support 5 V, 3.3 V and 3 V systems. If power
supply voltages are out of tolerance reset signals
become active, preventing the system microcontroller,
ASIC or peripherals from operating. Reset signals
become inactive typically 200 ms after the supply voltage
exceeds the reset threshold level. With both active high
and low reset signals, interface to microcontrollers and
¯¯¯¯¯¯
other ICs is simple. In addition, the RESET pin or a
separate input, ¯¯¯, can be used as an input for push-
MR
button manual reset capability.
The on-chip, 2k-bit EEPROM memory features a 16-byte
page. In addition, hardware data protection is provided
by a V
CC
sense circuit that prevents writes to memory
whenever V
CC
falls below the reset threshold or until V
CC
reaches the reset threshold during power up.
Available packages include an 8-pin DIP and surface
mount 8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin
MSOP packages. The TDFN package thickness is
0.8mm maximum. TDFN footprint options are 3 x 3mm.
For Ordering Information details, see page 19.
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
1
Doc. No. MD-3009 Rev. P
Do something bad and get all the information on the IC website to your local computer
It is too troublesome to download information frequently, and some websites often have problems from time to time, which is too time-consuming. For convenience, I wrote a program to move all the infor...
littleshrimp Talking about work
Haven't been here for a long time.
Long time no see, water...
icfb Talking
Does anyone have an experiment of controlling a relay with ZigBee? Please help!
Newbie looking for zigbee control relay example...
wyc21ly RF/Wirelessly
How to intercept phone calls and set the screen orientation on a PDA
I want to make a small program to achieve the following effect: When the call button is pressed or there is an incoming call, the screen will switch to the vertical screen immediately regardless of wh...
maq9627 Embedded System
[Showing the "festival" flavor] Visiting many relatives in one day~~
There are two purposes for posting this. First, remind everyone that there are still activities related to the Spring Festival in our community, so when visiting relatives, don't forget to bring your ...
soso Talking
Urgent help! Can anyone familiar with vxworks/tornado development help me?
I chose the vxworks course, but I was busy with other things for the whole semester. I have a few days left to hand in my homework. I am in a hurry. I sincerely need help from experts. Price is negoti...
ttsurvive Real-time operating system RTOS

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1792  1489  1606  2737  1666  37  30  33  56  34 
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