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CAT1022ZI-30-T3

Description
Monitoring circuit 2K bit 3V ind temp
Categorystorage    storage   
File Size197KB,21 Pages
ManufacturerON Semiconductor
Websitehttp://www.onsemi.cn
Environmental Compliance
Download Datasheet Parametric View All

CAT1022ZI-30-T3 Overview

Monitoring circuit 2K bit 3V ind temp

CAT1022ZI-30-T3 Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerON Semiconductor
Reach Compliance Codecompliant
Data retention time - minimum100
Durability1000000 Write/Erase Cycles
I2C control byte1010000R
JESD-30 codeR-PDSO-G8
JESD-609 codee3
memory density2048 bit
Memory IC TypeEEPROM
memory width8
Humidity sensitivity level1
Number of terminals8
word count256 words
character code256
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
organize256X8
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP8,.19
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Parallel/SerialSERIAL
power supply3.3 V
Certification statusNot Qualified
Serial bus typeI2C
Maximum standby current0.00006 A
Maximum slew rate0.003 mA
Nominal supply voltage (Vsup)3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin (Sn)
Terminal formGULL WING
Terminal pitch0.635 mm
Terminal locationDUAL
write protectSOFTWARE
CAT1021, CAT1022, CAT1023
Supervisory Circuits with I
2
C Serial 2k-bit CMOS
EEPROM, Manual Reset and Watchdog Timer
FEATURES
Precision Power Supply Voltage Monitor
— 5 V, 3.3 V and 3 V systems
— Five threshold voltage options
Watchdog Timer
Active High or Low Reset
— Valid reset guaranteed at V
CC
= 1 V
400 kHz I
2
C Bus
2.7 V to 5.5 V Operation
Low power CMOS technology
16-Byte Page Write Buffer
Built-in inadvertent write protection
— WP pin (CAT1021)
1,000,000 Program/Erase cycles
Manual Reset Input
100 year data retention
Industrial and extended temperature ranges
8-pin DIP, SOIC, TSSOP, MSOP or TDFN
(3 x 3 mm foot-print) packages
— TDFN max height is 0.8 mm
DESCRIPTION
The CAT1021, CAT1022 and CAT1023 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
integrated together in low power CMOS technology.
Memory interface is via a 400 kHz I
2
C bus.
The CAT1021 and CAT1023 provide a precision V
CC
sense circuit and two open drain outputs: one (RESET)
¯¯¯¯¯¯
drives high and the other (RESET) drives low whenever
V
CC
falls below the reset threshold voltage. The
¯¯¯¯¯¯
CAT1022 has only a RESET output and does not have
a Write Protect input. The CAT1021 also has a Write
Protect input (WP). Write operations are disabled if WP
is connected to a logic high.
All supervisors have a 1.6 second watchdog timer circuit
that resets a system to a known state if software or a
hardware glitch halts or “hangs” the system. For the
CAT1021 and CAT1022, the watchdog timer monitors
the SDA signal. The CAT1023 has a separate watchdog
timer interrupt input pin, WDI.
The power supply monitor and reset circuit protect
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, the RESET pin or a
separate input, ¯¯¯, can be used as an input for push-
MR
button manual reset capability.
The on-chip, 2k-bit EEPROM memory features a 16-byte
page. In addition, hardware data protection is provided
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 surface
mount 8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin
MSOP packages. The TDFN package thickness is
0.8mm maximum. TDFN footprint options are 3 x 3mm.
For Ordering Information details, see page 19.
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
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