CAT1026WI-25-G ON Semiconductor, CAT1026WI-25-G Datasheet

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CAT1026WI-25-G

Manufacturer Part Number
CAT1026WI-25-G
Description
Supervisory Circuits CPU w/2K
Manufacturer
ON Semiconductor
Datasheet

Specifications of CAT1026WI-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
Manual Reset
Not Resettable
Watchdog
No Watchdog
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-8 Wide
Maximum Power Dissipation
1000 mW
Minimum Operating Temperature
- 40 C
Supply Current (typ)
3000 uA
Supply Voltage - Min
2.7 V
CAT1026, CAT1027
Dual Voltage Supervisory
Circuits with I
2k-bit CMOS EEPROM
Description
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
with five reset threshold voltage options that support 5 V, 3.3 V and
3 V systems. The power supply monitor and reset circuit protects
memory and systems controllers during power up/down and against
brownout conditions. If power supply voltages are out of tolerance
reset signals become active preventing the system microcontroller,
ASIC, or peripherals from operating.
drives high and the other (RESET) drives low whenever V
below the threshold. Reset outputs become inactive typically 200 ms
after the supply voltage exceeds the reset threshold value. With both
active high and low reset signals, interface to microcontrollers and
other ICs is simple. CAT1027 has only a RESET output. In addition,
the RESET pin can be used as an input for push−button manual reset
capability.
input, V
auxiliary high impedance comparator drives the open drain output,
V
that resets a system to a known state if software or a hardware glitch
halts or “hangs” the system. The CAT1027 features a watchdog timer
interrupt input, WDI.
sense circuit that prevents writes to memory whenever V
threshold during power up.
packages. The TDFN package thickness is 0.8 mm maximum. TDFN footprint is 3 x 3 mm.
Features
© Semiconductor Components Industries, LLC, 2011
November, 2011 − Rev. 18
LOW
The CAT1026 and CAT1027 are complete memory and supervisory
The CAT1026 and CAT1027 provide a precision V
The CAT1026 features two open drain reset outputs: one (RESET)
The CAT1026 and CAT1027 provide an auxiliary voltage sensor
The CAT1027 is designed with a 1.6 second watchdog timer circuit
The on−chip 2k−bit EEPROM memory features a 16−byte page. In addition, hardware data protection is provided by a V
Available packages include an 8−pin DIP and surface mount, 8−pin SO, 8−pin TSSOP, 8−pin TDFN and 8−pin MSOP
Precision V
Additional Voltage Monitoring
Watchdog Timer (CAT1027 Only)
Active High or Low Reset
400 kHz I
2.7 V to 5.5 V Operation
Low Power CMOS Technology
5 V, 3.3 V and 3 V Systems
Five Threshold Voltage Options
Externally Adjustable Down to 1.25 V
Valid Reset Guaranteed at V
, whenever the sense voltage is below 1.25 V threshold.
SENSE
2
, which is used to monitor a second system supply. The
C Bus
CC
Power Supply Voltage Monitor
CC
2
2
= 1 V
C Serial
C bus.
CC
sense circuit
CC
1
falls below the reset threshold or until V
CC
falls
16−Byte Page Write Buffer
Built−in Inadvertent Write Protection
1,000,000 Program/Erase Cycles
Manual Reset Capability
100 Year Data Retention
Industrial and Extended Temperature Ranges
8−Pin DIP, SOIC, TSSOP, MSOP or TDFN (3 x 3 mm
foot−print) Packages
These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
TDFN max Height is 0.8 mm
For Ordering Information details, see page 13.
CASE 646AA
CASE 846AD
ORDERING INFORMATION
MSOP−8
PDIP−8
http://onsemi.com
CASE 751BD
SOIC−8
Publication Order Number:
CASE 511AL
CASE 948S
CC
TSSOP−8
TDFN−8
reaches the reset
CAT1026/D
CC

Related parts for CAT1026WI-25-G

CAT1026WI-25-G Summary of contents

Page 1

CAT1026, CAT1027 Dual Voltage Supervisory 2 Circuits with I 2k-bit CMOS EEPROM Description The CAT1026 and CAT1027 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 ...

Page 2

Table 1. RESET THRESHOLD OPTION Part Dash Number −45 −42 −30 −28 −25 EXTERNAL LOAD SDA V CC Monitor REF AuxiliaryVoltage Monitor V SENSE + V LOW - V REF Minimum ...

Page 3

DIP Package (L) SOIC Package (W) TSSOP Package (Y) MSOP Package ( LOW RESET 2 CAT1026 3 V SENSE LOW RESET 2 CAT1027 3 V SENSE RESET/RESET: RESET OUTPUTs (RESET ...

Page 4

... CAT1024 n CAT1025 n CAT1026 CAT1027 n NOTE: For supervisory circuits with embedded 16k EEPROM, please refer to the CAT1161, CAT1162 and CAT1163 data sheets. Table 5. ABSOLUTE MAXIMUM RATINGS Parameters Temperature Under Bias Storage Temperature Voltage on any Pin with Respect to Ground (Note 1) V with Respect to Ground ...

Page 5

Table 6. D.C. OPERATING CHARACTERISTICS 5.5 V and over the recommended temperature conditions unless otherwise specified. CC Symbol Parameter V Reset Threshold TH V Reset Output Valid V RVALID V (Note 4) Reset Threshold Hysteresis ...

Page 6

Table 9. RESET CIRCUIT AC CHARACTERISTICS Symbol Parameter t Power−Up Reset Timeout PURST RESET output Delay RDP Glitch Reject Pulse Width GLITCH CC t Watchdog Timeout Delay RPD2 SENSE ...

Page 7

Reset Controller Description The CAT1026 and CAT1027 precision RESET controllers ensure correct system operation during brownout and power up/down conditions. They are configured with open drain RESET outputs. During power−up, the RESET outputs remain active until V reaches the V ...

Page 8

RVALID t V PURST CC RESET RESET V REF V SENSE V LOW Externally adjustable threshold V TH-ADJ t GLITCH t RPD Figure 1. RESET Output Timing t RPD2 t RPD2 Figure 2. Auxiliary Voltage Monitor Timing ...

Page 9

The CAT1026 and CAT1027 feature a 2−kbit embedded 2 serial EEPROM that 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 ...

Page 10

After a successful data transfer, each receiving device is required to generate an acknowledge. The acknowledging device pulls down the SDA line during the ninth clock cycle, signaling that it received the 8 bits of data. The CAT1026 and CAT1027 ...

Page 11

Page Write The CAT1026 and CAT1027 write bytes of data in a single write cycle, using the Page Write operation. The page write operation is initiated in the same manner as the byte write operation, however instead ...

Page 12

BUS ACTIVITY: SDA LINE SCL SDA Immediate/Current Address Read The CAT1026 and CAT1027 address counter contains the address of the last byte accessed, incremented by one. In other words, if the last READ or WRITE access was to address N, ...

Page 13

... CAT1026LI−30−G CAT1026LI−28−G CAT1026LI−25−G CAT1026WI−45−GT3 CAT1026WI−42−GT3 CAT1026WI−30−GT3 CAT1026WI−28−GT3 CAT1026WI−25−GT3 CAT1026YI−45−GT3 CAT1026YI−42−GT3 CAT1026YI−30−GT3 CAT1026YI−28−GT3 CAT1026YI−25−GT3 CAT1026ZI−45−GT3 CAT1026ZI− ...

Page 14

... For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. 4. TDFN not available in NiPdAu (–G) version. 5. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device Nomenclature document, TND310/D, available at www.onsemi.com http://onsemi.com Package ...

Page 15

PIN # 1 IDENTIFICATION TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-012. PACKAGE DIMENSIONS SOIC 8, 150 mils CASE 751BD−01 ISSUE O SYMBOL ...

Page 16

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

Page 17

E E1 TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-187. MSOP 8, 3x3 CASE 846AD−01 ISSUE O SYMBOL MIN A A1 0.05 A2 ...

Page 18

D PIN#1 INDEX AREA TOP VIEW SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A3 0.20 REF b 0.23 0.30 D 2.90 3.00 D2 2.20 −−− E 2.90 3.00 E2 1.40 −−− e 0.65 TYP L 0.20 0.30 Notes: ...

Page 19

... 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− ...

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