Datasheet > CAT1832Z-GT25

CAT1832Z-GT25

更新时间： 2024-10-27 14:30:07

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安森美 - ONSEMI		/
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12页	182K
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数据手册

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CAT1832Z-GT25 数据手册

CAT1232LP, CAT1832

5 V and 3.3 V Supply Monitor, Watchdog Timer,

Manual Reset, with Active High & Low Resets

FEATURES

DESCRIPTION

Selectable reset voltage tolerance

— CAT1232LP for 5 V supply

— CAT1832 for 3.3 V supply

The CAT1232LP and CAT1832 microprocessor

supervisors can halt and restart a “hung-up” or

“stalled” microprocessor, restart a microprocessor

after a power failure, and debounce a manual/push-

button microprocessor reset switch. The devices are

drop in replacements for the Maxim/Dallas

Semiconductor DS1232LP and DS1832 supervisors

Selectable watchdog period:

150 ms, 600 ms or 1.2 s

Two reset outputs

— Active high, push-pull reset output

Precision reference and comparator circuits monitor

the 5 V or 3.3 V system power supply voltage, V_CC.

During power-up or when the power supply falls

outside selectable tolerance limits, both the RESET

— Active low, open-drain reset output

(CAT1232LP)

— Active low, push-pull reset output (CAT1832)

Debounced manual push-button reset

Compact SOIC and MSOP packages

¯¯¯¯¯¯

and RESET become active. After the power supply

voltage rises above the RESET threshold voltage, the

reset signals remain active for a minimum of 250ms,

allowing the power supply and system processor to

stabilize. The trip-point tolerance input, TOL, selects

the trip level tolerance to be either 5% or 10% for the

CAT1232LP 5 V supply and 10% or 20% for the

CAT1832 3.3 V supply.

For Ordering Information details, see page 11.

APPLICATIONS

Microprocessor Systems

Portable Equipment

Controllers

Each device has a push-pull, active HIGH reset

output. The CAT1232LP also has an open drain,

active LOW reset output while the CAT1832 also has

a push-pull, active LOW reset output.

Single Board Computers

Instrumentations

A debounced manual reset input activates the reset

outputs and holds them active for a minimum period of

250 ms after being released.

Telecommunications

Also included is a watchdog timer to reset a

microprocessor that has stopped due to a software or

hardware failure. Three watchdog time-out periods are

¯¯

selectable: 150 ms, 600 ms and 1.2 s. If the ST input

is not strobed low before the watchdog time out period

expires, the reset signals become active for a

minimum of 250 ms.

FUNCTIONAL DIAGRAM

RESET

(CAT1232LP)

TOL

Tolerance Selection

Reference

–

40kΩ

RESET

PBRST

Push Button Debounce

Watchdog Timebase Selection

Watchdog Transition Detector

Reset &

Watchdog Timer

(CAT1832)

Characteristics subject to change without notice

Doc. No. MD-3018 Rev. F

12 3 4 5 6 7...12

中文翻译

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与CAT1832Z-GT25相关器件

型号	品牌	获取价格	描述	数据表
CAT1832Z-GT3	CATALYST	获取价格	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
CAT1832Z-GT3	ONSEMI	获取价格	5 V and 3.3 V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
CAT1832Z-T13	CATALYST	获取价格	5V and 3.3V Supply Voltage Monitor and Reset Circuit
CAT1832ZT2	CATALYST	获取价格	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
CAT1832ZT3	CATALYST	获取价格	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets
CAT-20	MINI	获取价格	Fixed Attenuator, 0MHz Min, 1500MHz Max, CASE FF55
CAT-20+	MINI	获取价格	Fixed Attenuator, 0MHz Min, 1500MHz Max, CASE FF55
CAT-20-75	MINI	获取价格	Fixed Attenuator, 0MHz Min, 500MHz Max, CASE FF55
CAT-20-75+	MINI	获取价格	Fixed Attenuator, 0MHz Min, 500MHz Max, CASE FF55
CAT22C10	ONSEMI	获取价格	256-Bit Nonvolatile CMOS Static RAM

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