ASM708TESA

更新时间： 2024-11-28 22:50:15

品牌	Logo	应用领域
ALSC		光电二极管监控输入元件
页数	文件大小	规格书
16页	274K
描述
3/3.3/4.0 V uP Supervisor Circuits

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中文翻译

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数据手册

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ASM708TESA 数据手册

ASM706 P/ R/ S/ T/ J

ASM708 R/ S/ T/ J

October 2003

rev 1.0

3/3.3/4.0 V µP Supervisor Circuits

Features

General Description

The ASM706P/R/S/T/J and ASM708R/S/T/J are cost effective

CMOS supervisor circuits that monitor power-supply and

battery voltage level, and µP/µC operation.

•

Precision power supply minotor

•2.63V threshold (ASM706P/R, ASM708R)

•2.93V threshold (ASM706S, ASM708S)

•3.08V threshold (ASM706T, ASM708T)

•New 4.00V threshold (ASM706J , ASM708J)

The family offers several functional options. Each device

generates a reset signal during power-up, power-down and

during brownout conditions. A reset is generated when the

supply drops below 2.63V (ASM706P/R, ASM708R), 2.93V

(ASM706S, ASM708S), 3.08V (ASM706T, ASM708T) or 4.00

(ASM706J, ASM708J). In addition, the ASM706P/R/S/T/J

feature a 1.6 second watchdog timer. The watchdog timer

output will trigger a reset if connected to MR. Floating the WDI

input pin disables the watchdog timer.

•

Debounced manual reset input

Auxiliary voltage monitor comparator

•1.25V threshold

•Battery monitor / auxiliary supply monitor

•

Watchdog timer (ASM706P/R/S/T/J)

•Watchdog can be disabled by floating WDI

•

200ms reset time delay

Three reset signal options

•Active HIGH: ASM706P

•Active LOW: ASM706R/S/T/J

•Active HIGH and LOW outputs: ASM708R/S/T/J

The ASM708R/S/T/J have both active-HIGH and active-LOW

reset outputs but no watchdog function. The ASM706P has the

same pin-out and functions as the ASM706R but has an active-

HIGH reset output.

•

DIP, SO and MicroSO packages

Guaranteed RESET assertion to V_CC= 1.1V

Applications

•

Computers and embedded controllers

CTI applications

Automotive systems

Portable/Battery-operated systems

Intelligent instruments

Wireless communication systems

PDAs and hand-held equipment

Safety systems

A versatile power-fail circuit, useful in checking battery levels

and non-5V supplies, has a 1.25V threshold. All devices have a

manual reset input. All devices are available in 8-pin DIP, SO

and the compact MicroSO packages. The MicroSO package

requires 50% less PC board area than the conventional SO

package.

Typical Operating Circuit

Unregulated DC

+3.3V Regulator

µP

V_CC

R₁

V_CC

RESET

(RESET)

PFI

WDI

I/O LINE

ASM706 R/S/T

ASM708 R/S/T

(ASM706 P)

NMI

WDO

PFO

R₂

INTERRUPT

Alliance Semiconductor

2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com

Notice: The information in this document is subject to change without notice

12 3 4 5 6 7...16

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与ASM708TESA相关器件

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