Datasheet > SGM823A

SGM823A

更新时间： 2023-09-03 20:25:02

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
13页	690K
描述
Microprocessor Supervisory Circuit with Watchdog Timer and Manual Reset

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SGM823A 数据手册

SGM823A

Microprocessor Supervisory Circuit

with Watchdog Timer and Manual Reset

GENERAL DESCRIPTION

FEATURES

The SGM823A is

complete microprocessor

● Ultra-Low Supply Current: 0.64μA (TYP)

● Precision Supply-Voltage Monitor

 2.19V for SGM823A-Y

supervisory device which combines reset, watchdog

and manual reset functions in a SOT-23-5 package.

System reliability is significantly improved by such

integration compared to the designs with individual

ICs or discrete components. The SGM823A also

features an excellent transient immunity to ignore fast

 1.67V for SGM823A-W

 1.58V for SGM823A-V

● Guaranteed nRESET Valid at V_CC= 1V

● Push-Pull nRESET Output

● Reset Pulse Width: 200ms (TYP)

● Debounced TTL/CMOS-Compatible

● Manual Reset Input

_CCtransients.

This device has an active-low push-pull reset output

(nRESET) that is activated by a logic low on the

manual reset input (nMR), a watchdog expiry event or

due to a low V_CCvoltage. The nRESET output can still

be in the correct logic state even if V_CCis lower than

1V. The SGM823A is offered in three fixed V_CCreset

threshold voltages.

● Watchdog Timer with 1.6s (TYP) Timeout

● Fully Specified over Temperature

● Power-Supply Transient Immunity

● Without External Components

● -40℃ to +125℃ Operating Temperature Range

● Available in a Green SOT-23-5 Package

The SGM823A is available in a Green SOT-23-5

package. It operates over an ambient temperature

range of -40℃ to +125℃.

APPLICATIONS

Computers

Portable Equipment

Automotive Equipment

Intelligent Instruments

Critical μP Power Monitoring

TYPICAL APPLICATION

V_CC

Microprocessor

V_CC

nRESET

SGM823A

nMR

WDI

I/O

Manual

Reset

GND

SG Micro Corp

www.sg-micro.com

JULY 2022–REV. A.2

12 3 4 5 6 7...13

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