ADM824

更新时间： 2024-11-05 22:40:35

品牌	Logo	应用领域
亚德诺 - ADI		监控
页数	文件大小	规格书
10页	176K
描述
Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23

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ADM824 数据手册

Supervisory Circuits with Watchdog and

Manual Reset in 5-Lead SC70 and SOT-23

Preliminary Technical Data

ADM823/ADM824/ADM825

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Precision 2.5 V to 5 V power supply monitor

7 reset threshold options: 2.19 V to 4.63 V

140 ms (min) reset timeout

Watchdog timer with 1.6s timeout (ADM823, ADM824)

Manual reset input (ADM823, ADM825)

Push-pull output stages:

ADM823

RESET

GENERATOR

REF

DEBOUNCE

RESET

(ADM823)

WATCHDOG

DETECTOR

, RESET (ADM824/ADM825)

Low power consumption (3 µA)

Guaranteed reset output valid to V_CC= 1 V

Power supply glitch immunity

GND

WDI

Figure 1.

Specified over automotive temperature range

5-lead SC70 and SOT-23 packages

APPLICATIONS

Microprocessor systems

Computers

Controllers

Intelligent instruments

Portable equipment

GENERAL DESCRIPTION

Each part is available in a choice of seven reset threshold

options ranging from 2.19 V to 4.63 V. The reset and watchdog

timeout periods are fixed at 140 ms (min) and 1.6s (typ),

respectively.

The ADM823/ADM824/ADM825 are supervisory circuits

which monitor power supply voltage levels and code execution

integrity in microprocessor-based systems. As well as providing

power on reset signals, an on-chip watchdog timer can reset the

microprocessor if it fails to strobe within a preset timeout

period. A reset signal can also be asserted by means of an

external push-button, through a manual reset input. The three

parts feature different combinations of watchdog input, manual

reset input and output stage configuration, as shown in Table 1.

The ADM823/ADM824/ADM825 are available in 5-lead SC70

and SOT-23 packages and typically consume only 3 µA, making

them suitable for use in low power portable applications.

Table 1. Selection Table

Output Stage

RESET

Part No.

ADM823

ADM824

ADM825

Watchdog Timer

Manual Reset

Yes

–

Yes

–

Push-Pull

–

Push-Pull

Yes

Rev.PrB

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.326.8703

www.analog.com

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与ADM824相关器件

型号	品牌	获取价格	描述	数据表
ADM824_15	ADI	获取价格	Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
ADM824LAKS-RL	ADI	获取价格	暂无描述
ADM824LYKS-R7	ADI	获取价格	Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
ADM824LYKS-REEL7	ADI	获取价格	IC 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, PLASTIC, MO-203AA, SC-70, 5 PIN, Power Ma
ADM824LYRJ-R7	ADI	获取价格	IC 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, PLASTIC, MO-178AA, SOT-23, 5 PIN, Power M
ADM824LYRT-R7	ADI	获取价格	Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
ADM824MYKS-R7	ADI	获取价格	Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
ADM824MYRJ-R7	ADI	获取价格	IC 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, PLASTIC, MO-178AA, SOT-23, 5 PIN, Power M
ADM824MYRT-R7	ADI	获取价格	Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SC70 and SOT-23
ADM824RART-RL	ADI	获取价格	IC 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5, MO-178AA, SOT-23, 5 PIN, Power Management

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