CAT1161WI-25-G ON Semiconductor, CAT1161WI-25-G Datasheet

no-image

CAT1161WI-25-G

Manufacturer Part Number
CAT1161WI-25-G
Description
Supervisory Circuits CPU w/16K
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAT1161WI-25-G

Product Category
Supervisory Circuits
Rohs
yes
Number Of Voltages Monitored
1
Monitored Voltage
3 V, 3.3 V, 5 V
Undervoltage Threshold
2.55 V
Overvoltage Threshold
2.7 V
Output Type
Active High, Active Low, Open Drain
Manual Reset
Resettable
Watchdog
Watchdog
Battery Backup Switching
No Backup
Power-up Reset Delay (typ)
270 ms
Supply Voltage - Max
6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8 Wide
Chip Enable Signals
No
Maximum Power Dissipation
1000 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
3000 uA
Supply Voltage - Min
2.7 V
CAT1161, CAT1162
Supervisory Circuits with
I
Precision Reset Controller
and Watchdog Timer (16K)
Description
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
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.
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.
hardware data protection is provided by a write protect pin WP and by
a V
below the reset threshold or until V
during power up.
8−pin SO package.
Features
© Semiconductor Components Industries, LLC, 2012
July, 2012 − Rev. 12
2
2
C bus.
The CAT1161/2 is a complete memory and supervisory solution for
The 1.6−second watchdog circuit returns a system to a known good
The power supply monitor and reset circuit protects memory and
The CAT1161/2 memory features a 16−byte page. In addition,
Available packages include an 8−pin DIP and a surface mount,
Watchdog Monitors SDA Signal (CAT1161)
400 kHz I
2.7 V to 6 V Operation
Low Power CMOS Technology
16−Byte Page Write Buffer
Built−in Inadvertent Write Protection
Active High or Low Reset
CC
C Serial CMOS EEPROM,
V
Write Protection Pin, WP
Precision Power Supply Voltage Monitor
5 V, 3.3 V and 3 V Systems
Five Threshold Voltage Options
sense circuit that prevents writes to memory whenever V
CC
Lock Out
2
C Bus Compatible
CC
reaches the reset threshold
1
CC
falls
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
Pin Name
For Ordering Information details, see page 11.
RESET
RESET
GND
SDA
SCL
V
WP
DC
CC
RESET
CASE 646AA
GND
ORDERING INFORMATION
WP
DC
PDIP−8
PIN CONFIGURATION
http://onsemi.com
PIN FUNCTIONS
1
2
3
4
Function
Do Not Connect
Active Low Reset I/O
Write Protect
Ground
Serial Data/Address
Clock Input
Active High Reset I/O
Power Supply
CAT1161
CAT1162
Publication Order Number:
CASE 751BD
SOIC−8
8
7
6
5
V
RESET
SCL
SDA
CC
CAT1161/D

Related parts for CAT1161WI-25-G

CAT1161WI-25-G Summary of contents

Page 1

... CAT1161, CAT1162 Supervisory Circuits with Serial CMOS EEPROM, Precision Reset Controller and Watchdog Timer (16K) Description The CAT1161 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 ...

Page 2

Table 1. RESET THRESHOLD OPTION Part Dash Minimum Number Threshold −45 4.50 −42 4.25 −30 3.00 −28 2.85 −25 2.55 BLOCK DIAGRAM EXTERNAL LOAD D OUT ACK V CC WORDADDRESS GND BUFFERS START/STOP SDA LOGIC XDEC CONTROL WP LOGIC RESET ...

Page 3

Table 2. ABSOLUTE MAXIMUM RATINGS Parameters Temperature Under Bias Storage Temperature Voltage on any Pin with Respect to Ground (Note 1) V with Respect to Ground CC Package Power Dissipation Capability (T Lead Soldering Temperature (10 sec) Output Short Circuit ...

Page 4

Table 6. AC CHARACTERISTICS 6.0 V unless otherwise specified. Output Load is TTL Gate and 100 pF. CC Symbol F Clock Frequency SCL T (Note 1) Noise Suppression Time Constant at SCL, SDA Inputs 1 ...

Page 5

WP: WRITE PROTECT If the pin is tied to V the entire memory array becomes CC Write Protected (READ only). When the pin is tied to GND or left floating normal read/write operations are allowed to the device. RESET/RESET: RESET ...

Page 6

Hardware Data Protection The CAT1161/2 is designed with the following hardware data protection features to provide a high degree of data integrity. 1. The CAT1161/2 features a WP pin. When the WP pin is tied high the entire memory array ...

Page 7

The CAT1161/2 supports the I C Bus data transmission protocol. This Inter−Integrated Circuit Bus protocol defines any device that sends data to the bus transmitter and any device receiving data receiver. The transfer ...

Page 8

Byte Write In the Byte Write mode, the Master device sends the START condition and the slave address information (with the R/W bit set to zero) to the Slave device. After the Slave generates an acknowledge, the Master sends a ...

Page 9

The READ operation for the CAT1161/2 is initiated in the same manner as the write operation with one exception, that R/W bit is set to one. Three different READ operations are possible: Immediate/Current Selective/Random READ and Sequential READ. Immediate/Current Address ...

Page 10

BUS ACTIVITY: SLAVE R MASTER ADDRESS T SDA LINE S Figure 10. Selective Read Timing BUS ACTIVITY: SLAVE MASTER ADDRESS DATA n SDA LINE Figure 11. Sequential Read Timing BYTE SLAVE ...

Page 11

... CAT1161LI−25−G 2.55 V − 2.70 V CAT1161WI−45−GT3 4.50 V − 4.75 V CAT1161WI−42−GT3 4.25 V − 4.50 V CAT1161WI−30−GT3 3.00 V − 3.15 V CAT1161WI−28−GT3 2.85 V − 3.00 V CAT1161WI−25−GT3 2.55 V − 2.70 V CAT1162LI−45−G 4.50 V − 4.75 V CAT1162LI−42−G 4.25 V − 4.50 V CAT1162LI−30−G 3.00 V − 3.15 V CAT1162LI−28−G 2.85 V − 3.00 V CAT1162LI−25−G 2.55 V − ...

Page 12

PIN # 1 IDENTIFICATION D TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MS-001. PACKAGE DIMENSIONS PDIP−8, 300 mils CASE 646AA−01 ISSUE A SYMBOL ...

Page 13

... SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303− ...

Related keywords