CAT1232LP

更新时间： 2024-01-21 16:30:19

品牌	Logo	应用领域
安森美 - ONSEMI		电源电路电源管理电路监视器光电二极管输入元件
页数	文件大小	规格书
12页	185K
描述
5 V and 3.3 V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets

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CAT1232LP 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TSSOP, TSSOP8,.19	Reach Compliance Code：	compliant
风险等级：	5.34	JESD-30 代码：	R-PDSO-G8
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP8,.19
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：	1/5.5 V	认证状态：	Not Qualified
子类别：	Power Management Circuits	最大供电电流 (Isup)：	0.05 mA
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
Base Number Matches：	1

CAT1232LP 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

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与CAT1232LP相关器件

型号	品牌	描述	获取价格	数据表
CAT1232LP_06	CATALYST	5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets	获取价格
CAT1232LPGL	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格
CAT1232LPGV	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格
CAT1232LPGV-T13	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格
CAT1232LPGW	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格
CAT1232LPGW-T13	CATALYST	5V and 3.3V Supply Voltage Monitor and Reset Circuit	获取价格

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