Datasheet > CAT24C083JI-28TE13

CAT24C083JI-28TE13

更新时间： 2024-02-14 03:29:30

品牌	Logo	应用领域
CATALYST		监控控制器可编程只读存储器
页数	文件大小	规格书
12页	89K
描述
Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer

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CAT24C163/083/043/023

Advanced

PIN DESCRIPTIONS

with open drain RESET outputs. During power-up, the

RESET outputs remain active until V_CCreaches the

V_THthreshold and will continue driving the outputs for

approximately 200ms (t_PURST) after reaching V_TH.After

the t_PURSTtimeout interval, the device will cease to drive

resetoutputs.Atthispointtheresetoutputswillbepulled

upordownbytheirrespectivepullup/pulldowndevices.

During power-down, the RESET outputs will begin driv-

ing active when V_CCfalls below V_TH.The RESET

outputs will be valid so long as V_CCis >1.0V (V_RVALID).

WDI: WATCHDOG INPUT

If there is no transition on the WDI for more than 1.6

seconds, the watchdog timer times out.

WP: WRITE PROTECT

If the pin is tied to V_CCthe entire memory array becomes

WriteProtected(READonly). WhenthepinistiedtoV_SS

or left floating normal read/write operations are allowed

to the device.

The RESET pins are I/Os; therefore, the CAT24CXXX

can act as a signal conditioning circuit for an externally

applied reset. The inputs are level triggered; that is, the

RESET input in the 24CXXX will initiate a reset timeout

after detecting a high and the RESET input in the

24CXXXwillinitiatearesettimeoutafterdetectingalow.

SCL: SERIAL CLOCK

The serial clock input clocks all data transferred into or

out of the device.

RESET/RESET: RESET I/O

These are open drain pins and can be used as reset

triggerinputs. Byforcingaresetconditiononthepinsthe

device will initiate and maintain a reset condition for

approximately 200ms. RESET pin must be connected

through a pull-down and RESET pin must be connected

through a pull-up device.

Watchdog Timer

The Watchdog Timer provides an independent protec-

tion for microcontrollers. During a system failure, the

CAT24CXXX will respond with a reset signal after a

time-outintervalof1.6secondsforalackofactivity. The

24CXX3 is designed with a WDI input pin for the Watch-

dogTimerfunction. Forthe24CXX3,ifthemicrocontroller

doesnot toggletheWDIinputpinwithin1.6seconds,the

Watchdog Timer times out. This will generate a reset

condition on reset outputs. The Watchdog Timer is

cleared by any transition on WDI.

SDA: SERIAL DATA/ADDRESS

The bidirectional serial data/address pin is used to

transfer all data into and out of the device. The SDA pin

is an open drain output and can be wire-ORed with other

open drain or open collector outputs.

DEVICE OPERATION

Reset Controller Description

As long as the reset signal is asserted, the Watchdog

Timer will not count and will stay cleared.

The CAT24CXXX provides a precision RESET control-

ler that ensures correct system operation during brown-

out and power up/down conditions. It is configured

Figure 1. RESET Output Timing

GLITCH

RVALID

RPD

PURST

RESET

RPD

RESET

Doc. No. 25080-00 3/98 M-1

1 2 3 456 7 8...12

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与CAT24C083JI-28TE13相关器件

型号	品牌	描述	获取价格	数据表
CAT24C083JI-30	CATALYST	EEPROM, 1KX8, Serial, CMOS, PDSO8	获取价格
CAT24C083JI-30TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C083JI-42TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C083JI-45TE13	CATALYST	Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog	获取价格
CAT24C083P	CATALYST	EEPROM	获取价格
CAT24C083P-25	CATALYST	Power Supply Management Circuit, Adjustable, 1 Channel, CMOS, PDIP8, PLASTIC, DIP-8	获取价格

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