Datasheet > SGM816

SGM816

更新时间： 2024-09-27 11:12:07

品牌	Logo	应用领域
圣邦微 - SGMICRO		/
页数	文件大小	规格书
20页	1423K
描述
Ultra-Low Power Voltage Detectors with Optional Watchdog

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中文翻译

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SGM816 数据手册

SGM814/SGM815/SGM816

Ultra-Low Power Voltage Detectors

with Optional Watchdog

GENERAL DESCRIPTION

FEATURES

The SGM814, SGM815 and SGM816 are a family of

complete microprocessor supervisory devices which

combine ultra-low power, supervisory circuits and timer

circuits. System reliability is significantly improved by

such integration compared to the designs using

individual ICs or discrete components. These devices

feature a wide supply voltage from 1V to 5V.

Regardless of whether the detection voltage is high or

low, the output can be forced low through the manual

reset pin (nMR).

● High Accuracy Fixed Detection Options: 1.2V,

1.5V, 1.6V, 2V and 3.3V

● High Trigger Accuracy: 1% (TYP)

● Low Quiescent Current: 1.6μA (TYP)

● Low nRESET Defined Input Voltage: 0.5V

● Delay Time for the Power-on Reset Generator:

140ms

● Reset Output Options:

 Open-Drain: SGM814 and SGM815

 Push-Pull: SGM816

● Available in a Green SOT-23-6 Package

If the supply voltage (V_DD) exceeds 0.5V during the

power-on period, nRESET will assert low. And when

APPLICATIONS

V_DDis under the default voltage threshold, the nRESET

output keeps low. The V_HYSdesign on V_DDcan avoid

nRESET triggering by mistake.

Microprocessor Systems

Controllers

Battery-Powered Systems

Portable Equipment

The SGM814 and SGM815 both have an active-low

open-drain reset output, and can monitor two different

voltages, either PFI or SENSE trigger the threshold, the

nRESET will assert. The SGM816 has an active-low

push-pull reset output and a watchdog timer to monitor

the process.

Instruments and Apparatus

Communications-Equipment

TYPICAL APPLICATION

3.3V

1.6V

The devices are available in a Green SOT-23-6

package. They operate over a junction temperature

range of -40℃ to +125℃.

VDD

V_CORE

V_IO

R₃

SGM815-3.3

DSP

nRESET

R₁

nMR

SENSE

nRSTVDD

nRSTSENSE

GND

R₂

GND

Figure 1. Typical Application Circuit Example

AVAILABLE OPTIONS

nRSTSENSE,

nRSTVDD Output

Device nRESET Output

nPFO Output WDI Input PFI Input nMR Input SENSE Input

SGM814

SGM815

SGM816

√ (Open-Drain)

√

√ (Open-Drain)

√

√ (Push-Pull)

√

SG Micro Corp

www.sg-micro.com

JUNE2022–REV. A

12 3 4 5 6 7...20

中文翻译

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