Datasheet > G662-293T11U

G662-293T11U

更新时间： 2024-09-29 09:38:15

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Power Management Circuit

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数据手册

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G662-293T11U 数据手册

Global Mixed-mode Technology Inc.

G660/G661/G662

Microprocessor Reset IC

Features

General Description

The G660/G661/G662 provide circuits initialization and

timing supervision, primarily for DSP and proces-

Power-On Reset Generator With Fixed Delay

Time of 200ms

sor-based systems. During power-on, RESET

(RESET) is asserted when supply voltage VCC be-

comes higher than 1.1 V. Thereafter, the supply volt-

Manual Reset Input (G660/G661)

Available in three RESET Output Options

Push-Pull RESET Output (G660L/G662)

Push-Pull RESET Output (G660H/G662)

age supervisor monitors VCC and keeps RESET

(RESET) active as long as VCC remains below the

Open-Drain RESET Output (G661L)

Supply Voltage Supervision Range

2.5V, 3V, 3.3V, 5V

Watchdog Timer (G660/G661/G662)

Supply Current of 10µA at V_CC=3.3V

SOT-23-5 Package

(1)

threshold voltage V_IT+

An internal timer delays the return of the output to the

inactive state to ensure proper system reset. The de-

lay time, td, starts after VCC has risen above the

threshold voltage V_IT+. When the supply voltage drops

below the threshold voltage V_IT-⁽²⁾, the outputs be-

comes active again. No external components are re-

quired. All the devices have a fixed-sense threshold

voltage V_IT-set by an internal voltage divider.

Temperature Range . . . −40°C to 85°C

Applications

Critical μP and μC Power Monitoring

Industrial Equipment

The G660/G661 incorporate a manual reset input,MR .

A low level at MR causes RESET (RESET) to be-

come active. The G660/G661/G662 have WDI pin.

The watchdog timer is periodically triggered by a posi-

tive or negative transition at WDI. When the supervis-

ing system fails to retrigger the watchdog circuit within

Programmable Controls

Automotive Systems

Portable/Battery-Powered Equipment

Intelligent Instruments

Wireless Communications Systems

Notebook/Desktop Computers

the time-out interval, t_tout, RESET (RESET) becomes

active for the time period td. This event also reinitial-

izes the watchdog timer. Leaving WDI unconnected

disables the watchdog.

The product spectrum is designed for supply voltages

of 2.5V, 3V, 3.3V, and 5V. The circuits are available in

a SOT-23-5 package.

Note:

(1) V_IT+means the reset voltage of V_CCfrom low to high

(2) V_IT-means the reset voltage of V_CCfrom high to low.

Pin Configuration

Typical Application Circuit

3.3V

100nF

G660/G661

G662

VCC

RESET

VCC

WDI

VCC

WDI

RESET

GND

RESET

(RESET)

RESET

G660/G661

G662

µP

GND

WDI

I/O

RESET

GND

RESET

GND

SOT-23-5

()is for G660H

SOT-23-5

MR is for G660/G661

** RESET is for G662

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 0.5

Jan 30, 2008

中文翻译

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与G662-293T11U相关器件

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G66B	IDEA	获取价格	T-1-3/4, Right-Angle LED Assembly
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G670	GMT	获取价格	Microprocessor Reset IC
G670/1	GMT	获取价格	G670H/L is a Push-Pull High/Low Reset G671L is an Open-drain Low Reset
G670_15	GMT	获取价格	Microprocessor Reset IC
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