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CAT1161WI45

Description
Supervisory Circuits 16K I2C Memory w/WDT
CategoryPower/power management    The power supply circuit   
File Size145KB,13 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Environmental Compliance
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CAT1161WI45 Overview

Supervisory Circuits 16K I2C Memory w/WDT

CAT1161WI45 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerON Semiconductor
Parts packaging codeSOIC
package instructionSOP,
Contacts8
Reach Compliance Codecompliant
ECCN codeEAR99
Base Number Matches1
CAT1161, CAT1162
Supervisory Circuits with
I
2
C Serial CMOS EEPROM,
Precision Reset Controller
and Watchdog Timer (16K)
Description
http://onsemi.com
The CAT1161/2 is a complete memory and supervisory solution for
microcontroller−based systems. A serial EEPROM memory (16K)
with hardware memory write protection, a system power supervisor
with brown out protection and a watchdog timer are integrated
together in low power CMOS technology. Memory interface is via an
I
2
C bus.
The 1.6−second watchdog circuit returns a system to a known good
state if a software or hardware glitch halts or “hangs” the system. The
CAT1161 watchdog monitors the SDA line, making an additional PC
board trace unnecessary. The lower cost CAT1162 does not have a
watchdog timer.
The power supply monitor and reset circuit protects 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, a reset pin can be used as a
debounced input for pushbutton manual reset capability.
The CAT1161/2 memory features a 16−byte page. In addition,
hardware data protection is provided by a write protect pin WP and 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 a surface mount,
8−pin SO package.
Features
PDIP−8
CASE 646AA
SOIC−8
CASE 751BD
PIN CONFIGURATION
DC
RESET
WP
GND
1
2
3
4
CAT1161
CAT1162
8
7
6
5
V
CC
RESET
SCL
SDA
PIN FUNCTIONS
Pin Name
DC
RESET
WP
GND
SDA
SCL
RESET
V
CC
Function
Do Not Connect
Active Low Reset I/O
Write Protect
Ground
Serial Data/Address
Clock Input
Active High Reset I/O
Power Supply
Watchdog Monitors SDA Signal (CAT1161)
400 kHz I
2
C Bus Compatible
2.7 V to 6 V Operation
Low Power CMOS Technology
16−Byte Page Write Buffer
Built−in Inadvertent Write Protection
V
CC
Lock Out
Write Protection Pin, WP
Active High or Low Reset
Precision Power Supply Voltage Monitor
5 V, 3.3 V and 3 V Systems
Five Threshold Voltage Options
ORDERING INFORMATION
For Ordering Information details, see page 11.
1,000,000 Program/Erase Cycles
Manual Reset
100 Year Data Retention
8−Pin DIP or 8−Pin SOIC
Commercial and Industrial Temperature Ranges
These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
©
Semiconductor Components Industries, LLC, 2012
July, 2012
Rev. 12
1
Publication Order Number:
CAT1161/D

CAT1161WI45 Related Products

CAT1161WI45 CAT1161LI42 CAT1161LI25 CAT1161WI25 CAT1161LI28
Description Supervisory Circuits 16K I2C Memory w/WDT Supervisory Circuits 16K I2C Memory w/WDT Supervisory Circuits 16K I2C Memory w/WDT Supervisory Circuits 16K I2C Memory w/WDT Supervisory Circuits 16K I2C Memory w/WDT
Is it lead-free? Lead free Lead free Lead free Lead free Lead free
Is it Rohs certified? conform to conform to conform to conform to conform to
Maker ON Semiconductor ON Semiconductor ON Semiconductor ON Semiconductor ON Semiconductor
Parts packaging code SOIC DIP DIP SOIC DIP
package instruction SOP, DIP, DIP, SOP, DIP,
Contacts 8 8 8 8 8
Reach Compliance Code compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
Base Number Matches 1 - 1 1 1
Other features - RESET THRESHOLD VOLTAGES ARE 4.375V; MANUAL RESET INPUT RESET THRESHOLD VOLTAGES ARE 2.625V; MANUAL RESET INPUT - RESET THRESHOLD VOLTAGES ARE 2.925V; MANUAL RESET INPUT
Adjustable threshold - NO NO NO NO
Analog Integrated Circuits - Other Types - POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code - R-PDIP-T8 R-PDIP-T8 R-PDSO-G8 R-PDIP-T8
JESD-609 code - e3 e3 e3 e3
length - 9.59 mm 9.59 mm 4.9 mm 9.59 mm
Number of channels - 1 1 1 1
Number of functions - 1 1 1 1
Number of terminals - 8 8 8 8
Maximum operating temperature - 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature - -40 °C -40 °C -40 °C -40 °C
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - DIP DIP SOP DIP
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form - IN-LINE IN-LINE SMALL OUTLINE IN-LINE
Peak Reflow Temperature (Celsius) - 260 260 260 260
Certification status - Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height - 4.57 mm 4.57 mm 1.75 mm 4.57 mm
Maximum supply voltage (Vsup) - 6 V 6 V 6 V 6 V
Minimum supply voltage (Vsup) - 2.7 V 2.7 V 2.7 V 2.7 V
Nominal supply voltage (Vsup) - 3.3 V 3.3 V 5 V 3.3 V
surface mount - NO NO YES NO
technology - CMOS CMOS CMOS CMOS
Temperature level - INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface - Tin (Sn) Tin (Sn) Tin (Sn) Tin (Sn)
Terminal form - THROUGH-HOLE THROUGH-HOLE GULL WING THROUGH-HOLE
Terminal pitch - 2.54 mm 2.54 mm 1.27 mm 2.54 mm
Terminal location - DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature - 40 40 40 40
width - 7.62 mm 7.62 mm 3.9 mm 7.62 mm
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