CAT1026LI-42-G

更新时间： 2024-11-15 11:53:27

品牌	Logo	应用领域
安森美 - ONSEMI		监控可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
20页	200K
描述
Dual Voltage Supervisory Circuits with IÂ²C Serial 2k-bit CMOS EEPROM

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CAT1026LI-42-G 数据手册

CAT1026, CAT1027

Dual Voltage Supervisory Circuits with

I²C Serial 2k-bit CMOS EEPROM

supply monitor and reset circuit protects memory and

FEATURES

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.

ꢀ Precision V_CCPower Supply Voltage Monitor

— 5 V, 3.3 V and 3 V systems

— Five threshold voltage options

ꢀ Additional voltage monitoring

— Externally adjustable down to 1.25 V

ꢀ Watchdog timer (CAT1027 only)

ꢀ Active High or Low Reset

The CAT1026 features two open drain reset outputs:

¯¯¯¯¯¯

one (RESET) drives high and the other (RESET)

drives low whenever V_CCfalls below the threshold.

Reset outputs become inactive typically 200ms 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

— Valid reset guaranteed at V_CC= 1 V

ꢀ 400 kHz I²C Bus

ꢀ 2.7 V to 5.5 V Operation

¯¯¯¯¯¯

has only a RESET output. In addition, the RESET pin

can be used as an input for push-button manual reset

capability.

ꢀ Low power CMOS technology

ꢀ 16-Byte Page Write Buffer

ꢀ Built-in inadvertent write protection

ꢀ 1,000,000 Program/Erase cycles

ꢀ Manual Reset capability

The CAT1026 and CAT1027 provide an auxiliary

voltage sensor input, V_SENSE, which is used to monitor a

second system supply. The auxiliary high impedance

comparator drives the open drain output, V_LOW

whenever the sense voltage is below 1.25 V threshold.

ꢀ 100 year data retention

ꢀ Industrial and extended temperature ranges

The CAT1027 is designed with 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. The CAT1027 features a watchdog timer

interrupt input, WDI.

ꢀ 8-pin DIP, SOIC, TSSOP, MSOP or TDFN

(3 x 3 mm foot-print) packages

— TDFN max height is 0.8 mm

For Ordering Information details, see page 19.

The on-chip 2k-bit EEPROM memory features a 16-byte

page. In addition, hardware data protection is provided

by a V_CCsense circuit that prevents writes to memory

whenever V_CCfalls below the reset threshold or until V_CC

reaches the reset threshold during power up.

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 integrated together in low power CMOS techno–

logy. Memory interface is via a 400 kHz I²C bus.

Available packages include 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

0.8 mm maximum. TDFN footprint is 3 x 3 mm.

The CAT1026 and CAT1027 provide a precision V_CC

sense circuit with five reset threshold voltage options

that support 5 V, 3.3 V and 3 V systems. The power

Characteristics subject to change without notice

Doc. No. MD-3010 Rev. P

12 3 4 5 6 7...20

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与CAT1026LI-42-G相关器件

型号	品牌	获取价格	描述	数据表
CAT1026LI-42-GT2	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI-42-GT3	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI-42-GT3	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8, 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-8
CAT1026LI-42T2	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI-42-T2	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI-42T3	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI-42-T3	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI-42-T3	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8, 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-8
CAT1026LI-42TE13	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026LI45	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8, LEAD AND HALOGEN FREE, PLASTIC, DIP-8

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