Datasheet > SGM820

SGM820

更新时间： 2023-09-03 20:29:55

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
16页	811K
描述
High-Accuracy Supervisory Circuit with Programmable Watchdog Timer

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SGM820 数据手册

SGM820

High-Accuracy Supervisory Circuit

with Programmable Watchdog Timer

GENERAL DESCRIPTION

FEATURES

The SGM820 is a high-accuracy supervisory circuit with

programmable watchdog timer, which can realize the

under-voltage threshold accuracy of less than 1% from

-40℃ to +125℃. It provides ten reset threshold voltage

options for 1.8V, 2.5V, 3V, 3.3V and 5V voltage

monitoring.

● Precision Fixed Detection Options: 1.8V, 2.5V, 3V,

3.3V and 5V

● High-Accuracy Voltage Threshold (< 1%)

● Hysteresis: 0.5% (TYP)

● Supply Voltage Range: 1.6V to 6.5V

● Ultra-Low Supply Current: 1.2μA (TYP)

● Factory-Set ±15% Accuracy Watchdog Timeout

and Reset Delays

The nRESET delay of the SGM820 has

high-precision delay timing. Due to its accurate

hysteresis, the SGM820 is very suitable for using with

strict tolerance systems.

● User-Programmable Watchdog Timeout

● Watchdog Disable Function

● Manual Reset Input (nMR)

The SGM820 has a programmable watchdog timer.

Users can program the timeouts through an external

capacitor or the default factory settings. In addition,

users can disable the watchdog through logic pins to

prevent accidental timeouts during development.

● Open-Drain nRESET Output

● -40℃ to +125℃ Operating Temperature Range

● Available in Green TDFN-3×3-8L and

TDFN-2×2-8L Packages

APPLICATIONS

The SGM820 is available in Green TDFN-3×3-8L and

TDFN-2×2-8L packages. It operates over an ambient

temperature range of -40℃ to +125℃.

Safety Applications

Precision Industrial System

Controllers

DSPs, FPGAs and ASICs

TYPICAL APPLICATION

1.8V

V_CC

R_PULLR_PULL

Microprocessor

V_CC

nRESET

CWD

nMR

nWDO

WDI

nNMI

GPIO

C_CWD

SGM820

SET

GND

SG Micro Corp

JULY 2019–REV. A

www.sg-micro.com

12 3 4 5 6 7...16

中文翻译

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