Datasheet > CAT1232LPL-GT2

CAT1232LPL-GT2

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
CATALYST		监视器
页数	文件大小	规格书
12页	179K
描述
5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets

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CAT1232LPL-GT2 数据手册

CAT1232LP/CAT1832

5V and 3.3V Supply Monitor, Watchdog Timer,

Manual Reset, with Active High & Low Resets

FEATURES

DESCRIPTION

ꢀ Selectable reset voltage tolerance

— CAT1232LP for 5V supply

— CAT1832 for 3.3V 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 micro-

processor reset switch. The devices are drop in

replacements for the Maxim/Dallas Semiconductor

DS1232LP and DS1832 supervisors

ꢀ Selectable watchdog period:

150ms, 600ms or 1.2 sec

ꢀ Two reset outputs

Precision reference and comparator circuits monitor the

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

power-up or when the power supply falls outside

selectabletolerancelimits, boththeRESETandRESET

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 5V

supply and 10% or 20% for the CAT1832 3.3V supply.

— Active high, push-pull reset output

— Active low, open-drain reset output

(CAT1232LP)

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

ꢀ Debounced manual push-button reset

ꢀ Compact SOIC and MSOP packages

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

250ms 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: 150ms, 600ms and 1.2sec. If the ST input is

not strobed low before the watchdog time out period

expires, the reset signals become active for a minimum

of 250ms.

For Ordering Information details, see page 11.

FUNCTIONAL DIAGRAM

VCC

(CAT1232LP)

RESET

TOL

Tolerance Selection

Reference

V_CC

–

40kΩ

RESET

PBRST

Push Button Debounce

Watchdog Timebase Selection

Watchdog Transition Detector

Reset &

Watchdog Timer

(CAT1832)

Characteristics subject to change without notice

Doc. No. 25089, Rev. 0C

12 3 4 5 6 7...12

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与CAT1232LPL-GT2相关器件

型号	品牌	描述	获取价格	数据表
CAT1232LPL-GT3	CATALYST	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets	获取价格
CAT1232LPLT2	CATALYST	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets	获取价格
CAT1232LPLT3	CATALYST	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets	获取价格
CAT1232LPP	CATALYST	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP8, 0.300 INCH, DIP-8	获取价格
CAT1232LPS	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格
CAT1232LPS-2	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格

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