ASM706REPA Datasheet

IC型號(hào)：
ASM706REPA
PDF描述：
3/3.3/4.0 V uP Supervisor Circuits
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274.56KB
PDF頁數(shù)：
16頁
芯片廠家：
ALSC

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ASM706 P/ R/ S/ T/ J

ASM708 R/ S/ T/ J

October 2003

rev 1.0

3/3.3/4.0 V 碌P Supervisor Circuits

Features

鈥?/div>

Precision power supply minotor

鈥?.63V threshold (ASM706P/R, ASM708R)

鈥?.93V threshold (ASM706S, ASM708S)

鈥?.08V threshold (ASM706T, ASM708T)

鈥ew 4.00V threshold (ASM706J , ASM708J)

鈥?/div>

Debounced manual reset input

Auxiliary voltage monitor comparator

鈥?.25V threshold

鈥attery monitor / auxiliary supply monitor

鈥?/div>

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

鈥atchdog can be disabled by floating WDI

200ms reset time delay

Three reset signal options

鈥ctive HIGH: ASM706P

鈥ctive LOW: ASM706R/S/T/J

鈥ctive HIGH and LOW outputs: ASM708R/S/T/J

鈥?/div>

DIP, SO and MicroSO packages

Guaranteed RESET assertion to V

= 1.1V

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

碌P/碌C

operation.

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.

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.

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.

Applications

鈥?/div>

Computers and embedded controllers

CTI applications

Automotive systems

Portable/Battery-operated systems

Intelligent instruments

Wireless communication systems

PDAs and hand-held equipment

Safety systems

Typical Operating Circuit

Unregulated DC

+3.3V Regulator

PFI

ASM706 R/S/T

ASM708 R/S/T

(ASM706 P)

碌P

RESET

(RESET)

WDI

WDO

PFO

RESET

(RESET)

I/O LINE

NMI

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

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