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部品型式

DS1705

製品説明
仕様・特性

DSDS1705/DS1706 DS1705/DS1706 3.3 and 5.0 Volt MicroMonitor FEATURES PIN ASSIGNMENT • Halts and restarts an out–of–control microprocessor • Holds PBRST • Automatically WDS 7 RST 3 6 ST IN restarts microprocessor after power 8 2 GND sients 1 VCC microprocessor in check during power tran- 4 5 NMI failure 8–PIN DIP (300 MIL) • Monitors pushbutton for external override WDS PBRST 7 RST (*RST) 3 6 ST IN • Eliminates the need for discrete components 8 2 GND 5% or 10% resets for 5.0 volt systems 1 VCC • Accurate 5%, 10% or 20% resets for 3.3 systems and 4 5 NMI • 3.3 volt 20% tolerance for use with 3.0 volt systems 8–PIN SOIC (150 MIL) • Pin compatible with the MAXIM MAX705/MAX706 in PBRST VCC GND IN 8–pin DIP and 8–pin SOIC • 8–pin DIP, 8–pin SOIC and 8–pin µ–SOP packages 1 2 3 4 8 7 6 5 WDS RST (*RST) ST NMI 8–PIN µ–SOP (118 MIL) • Industrial temperature range –40°C to +85°C See Mech. Drawings Section DS1705 and DS1706_/R/S/T (*DS1706L and DS1706P) PIN DESCRIPTION PBRST VCC GND IN NMI ST RST *RST WDS – – – – – – – – Pushbutton Reset Input Power Supply Ground Input Non–maskable Interrupt Strobe Input Active Low Reset Output Active High Reset Output (DS1706P and DS1706L only) – Watchdog Status Output DESCRIPTION The DS1705/DS1706 3.3 or 5.0 Volt MicroMonitor monitors three vital conditions for a microprocessor: power supply, software execution, and external override. A precision temperature compensated reference and comparator circuit monitors the status of VCC at the device and at an upstream point for maximum protection. When the sense input detects an out–of–tolerance condition a non–maskable interrupt is generated. As the voltage at the device degrades an internal power fail signal is generated which forces the reset to an active state. When VCC returns to an in–tolerance condition, the reset signal is kept in the active state for a minimum of 130 ms to allow the power supply and processor to stabilize. 022698 1/11

ブランド

MAXIM

会社名

Maxim Integrated

本社国名

U.S.A

事業概要

アナログおよびミックスドシグナル半導体製品を設計、製造、販売している米国系の株式会社である。 マキシム・インテグレーテッドは、工業、通信、民生、コンピューティングの各市場向けに集積回路を開発しています

供給状況

 
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