Datasheet > CAT1026JE-30

CAT1026JE-30

更新时间： 2024-11-16 07:22:55

品牌	Logo	应用领域
CATALYST		光电二极管
页数	文件大小	规格书
20页	153K
描述
2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, SOIC-8

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数据手册

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CAT1026JE-30 数据手册

CAT1026, CAT1027

Dual Voltage Supervisory Circuits with I²C Serial 2k-bit CMOS EEPROM

FEATURES

■ Precision V_CCpower supply voltage monitor

— 5V, 3.3 V and 3 V systems

■ Low power CMOS technology

■ 16-Byte page write buffer

— Five threshold voltage options

■ Built-in inadvertent write protection

■ 1,000,000 Program/Erase cycles

■ Manual reset capability

■ Additional voltage monitoring

— Externally adjustable down to 1.25 V

■ Watchdog timer (CAT1027 only)

■ Active high or low reset

— Valid reset guaranteed to V_CC= 1 V

■ 400 kHz I²C bus

■ 100 year data retention

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

(3 x 3 mm foot-print) packages

— TDFN max height is 0.8mm

■ Industrial and extended temperature ranges

■ 3.0 V to 5.5 V operation

DESCRIPTION

The CAT1026 and CAT1027 are complete memory and used as an input for push-button manual reset capability.

supervisorysolutionsformicrocontroller-basedsystems.

The CAT1026 and CAT1027 provide an auxiliary voltage

A 2k-bit serial EEPROM memory and a system power

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

supervisor with brown-out protection are integrated

system supply. The auxiliary high impedance comparator

together in low power CMOS technology. Memory

drives the open drain output, V_LOW, whenever the sense

interface is via a 400kHz I²C bus.

voltage is below 1.25V threshold.

The CAT1026 and CAT1027 provide a precision V_CC

TheCAT1027isdesignedwitha1.6secondwatchdogtimer

sense circuit with five reset threshold voltage options

circuit that resets a system to a known state if software or a

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

hardware glitch halts or “hangs” the system. The CAT1027

supply monitor and reset circuit protects memory and

features a watchdog timer interrupt input, WDI.

systems controllers during power up/down and against

brownout conditions. If power supply voltages are out of

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

tolerance reset signals become active preventing the

page. In addition, hardware data protection is provided by a

system microcontroller, ASIC, or peripherals from

V_CCsense circuit that prevents writes to memory whenever

operating.

V_CCfalls below the reset threshold or until V_CCreaches the

reset threshold during power up.

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

Available packages include an 8-pin DIP, 8-pin SOIC, 8-

pin TSSOP, 8-pin TDFN and 8-pin MSOP. The TDFN

outputs become inactive typically 200 ms after the

package thickness is 0.8mm maximum. TDFN footprint is

supply voltage exceeds the reset threshold value. With

3x3mm.

both active high and low reset signals, interface to

microcontrollers and other ICs is simple. CAT1027 has

onlyaRESET output. Inaddition, theRESET pincanbe

Doc No. 3010, Rev. K

Characteristics subject to change without notice

12 3 4 5 6 7...20

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与CAT1026JE-30相关器件

型号	品牌	获取价格	描述	数据表
CAT1026JE-30TE13	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, SOIC-8
CAT1026JE-30TE13	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026JE-42TE13	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026JE-42TE13	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, SOIC-8
CAT1026JE-45	CATALYST	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, SOIC-8
CAT1026JE-45TE13	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026JI-25TE13	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026JI-28	CATALYST	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, SOIC-8
CAT1026JI-28TE13	CATALYST	获取价格	Dual Voltage Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM
CAT1026JI-28TE13	ONSEMI	获取价格	2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, SOIC-8

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