EEWORLDEEWORLDEEWORLD

Part Number

Search

X40626S14I-2.7A

Description
RTC Module With CPU Supervisor
Categoryaccessories   
File Size517KB,23 Pages
ManufacturerXicon Passive Components
Websitehttp://www.xicor.com
Download Datasheet View All

X40626S14I-2.7A Overview

RTC Module With CPU Supervisor

Preliminary Information
64K
X40626
Dual Voltage CPU Supervisor with 64K Serial EEPROM
DESCRIPTION
8K x 8 Bit
FEATURES
• Dual voltage monitoring
—V
2Mon
operates independent of V
CC
• Watchdog timer with selectable timeout intervals
• Low V
CC
detection and reset assertion
—Four standard reset threshold voltages
—User programmable V
TRIP
threshold
—Reset signal valid to V
CC
=1V
• Low power CMOS
—20µA max standby current, watchdog on
—1µA standby current, watchdog OFF
• 64Kbits of EEPROM
—64 byte page size
• Built-in inadvertent write protection
—Power-up/power-down protection circuitry
—Protect 0, 1/4, 1/2, all or 64, 128, 256 or 512
bytes of EEPROM array with programmable
Block Lock
protection
• 400kHz 2-wire interface
—Slave addressing supports up to 4 devices on
the same bus
• 2.7V to 5.5V power supply operation
• Available Packages
—14-lead SOIC
—14-lead TSSOP
BLOCK DIAGRAM
V2MON
V2 Monitor
Logic
Watchdog Transition
Detector
WP
Data
Register
Command
Decode &
Control
Logic
V
CC
Threshold
Reset logic
Block Lock Control
The X40626 combines four popular functions, Power-on
Reset Control, Watchdog Timer, Dual Supply Voltage
Supervision, and Serial EEPROM Memory in one pack-
age. This combination lowers system cost, reduces
board space requirements, and increases reliability.
Applying power to the device activates the power on
reset circuit which holds RESET active for a period of
time. This allows the power supply and oscillator to stabi-
lize before the processor can execute code.
The Watchdog Timer provides an independent protection
mechanism for microcontrollers. When the microcontrol-
ler fails to restart a timer within a selectable time-out
interval, the device activates the RESET signal. The user
selects the interval from three preset values. Once
selected, the interval does not change, even after cycling
the power.
The device’s low V
CC
detection circuitry protects the
user’s system from low voltage conditions, resetting the
system when V
CC
falls below the set minimum V
CC
trip
point. RESET is asserted until V
CC
returns to proper
+
V
TRIP2
-
V2FAIL
Watchdog
Timer Reset
Protect Logic
RESET
Status
Register
Reset &
Watchdog
Timebase
SDA
SCL
S0
S1
64KB
EEPROM
Array
V
CC
V
TRIP
+
-
Power on and
Low Voltage
Reset
Generation
REV 1.1.15 2/11/04
www.xicor.com
Characteristics subject to change without notice.
1 of 23
Following the MSP430 matrix button scanning program high and low levels (usual idea)
[img]file:///C:/Users/user/Documents/Tencent%20Files/2353005372/Image/]SHU[U69~H3%60I7~V1VCJIKW.jpg[/img] [img]file:///C:/Users/user/AppData/Roaming/Tencent/Users/2353005372/QQ/WinTemp/RichOle/[XAI54Z...
qxdzhidao Microcontroller MCU
【CN0197】Li-ion battery pack monitor with integrated signal and power isolation
Circuit Function and Benefits Lithium-ion (Li-Ion) battery stacks contain a large number of battery cells that must be properly monitored to improve battery efficiency and extend battery life. The 6-c...
EEWORLD社区 ADI Reference Circuit
HD74LS74 usage essentials!
How should the PRESETt and CLEAR ports of HD74LS74 be connected to Vcc when I want to set the voltage level high? I checked its PDF document and found that there is a uA level current limit. . . . . ....
snowie Embedded System
EEWORLD University Hall ---- Machine Learning Bell Labs Huang Dawei
Machine Learning Bell Labs Huang Dawei : https://training.eeworld.com.cn/course/4582Machine learning is the study of how computers simulate or implement human learning behavior to acquire new knowledg...
老白菜 DIY/Open Source Hardware
Customized WinCE 5.0 supports video formats such as avi and mpg
I customized the wince 5.0 system on the 2440 development board, but neither the built-in Media Player nor other playback software can play avi and mpg files. (Media Player prompts that the path or fi...
szkyd Embedded System
[Anxinke NB-IoT Development Board EC-01F-Kit] Part 1: Getting to know EC-01F-Kit
[i=s]This post was last edited by oxygen_sh on 2022-1-13 21:52[/i]1. First impression of the development board Development board components: development board, antenna, mobile data card2. Development ...
oxygen_sh RF/Wirelessly

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2036  2690  2509  545  476  41  55  51  11  10 
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