Datasheet > SMR101

SMR101

更新时间： 2024-10-28 03:31:35

品牌	Logo	应用领域
SUMMIT		二极管电子控制器
页数	文件大小	规格书
9页	218K
描述
programmable reset controller especially designed for embedded consumer electronics.

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SMR101 数据手册

SMR101

Preliminary Information ¹(See Last Page)

FEATURES & APPLICATIONS

INTRODUCTION

• Two Programmable Reset Outputs, SOFT_RST#

And HARD_RST#

The SMR101 is a programmable reset controller

especially designed for embedded consumer

• De-Bounced Push-Button Reset Input With a

Programmable Delay Up To 40 Seconds Prior To

Reset Assertion

electronics. The device provides dual outputs that can

be used to implement “soft” and “hard” system resets.

Both resets can be triggered by an external reset input,

and an internal voltage monitor can trigger the soft

reset. Typically a “soft” reset applies to volatile registers

in an embedded controller while a hard reset is

equivalent to a full power cycle without the associated

power-up delays. The SMR101 receives an external

push-button input using an internal programmable de-

bounced timer. The push button input hold down time is

programmable up to 40 seconds with an internal on-chip

timer. A “short” hold down time (0.125-10 sec) asserts

the SOFT_RST# pin while a long hold down time (0.5-

40 sec) asserts the HARD_RST# pin. Both reset

outputs have programmable output durations from 1-

200ms. Additionally, voltage monitoring is provided via a

programmable threshold detector (2.30V – 4.50V) on

• 8 Programmable Settings For Both SOFT_RST#

And HARD_RST# Delay

• Programmable Voltage Monitor With 8 Voltage

Settings To Trigger SOFT_RST# Output

• Programmable Reset Output Duration From 1-

200ms

• Built-In 15us Voltage Glitch Filtering And Input

“De-Bouncing”

• 6 Ball Ultra CSP^TM(Chip-Scale) Package

• 8 Lead SOIC Package

Applications

• PDAs, Handheld PCs, Cameras, Camcorders

• Handheld GPS Equipment

• Satellite And Cable-TV Set-Top Box

the VDD pin.

This voltage detector asserts the

SOFT_RST# pin for the same 1-200ms output duration

as above. A 15us glitch filter avoids nuisance tripping

that can result in unnecessary system resets. The

SMR101 is factory programmed, to default values;

however, multiplexed programming pins are also

provided for in-system programming for prototype

purposes.

SIMPLIFIED APPLICATIONS DRAWING

2.7V 5.5V

0.1µf

3.3V

Manual

Reset

Switch

TRIM_C

FILT_CAP

RESET_IN#

SOFT_RST#

SMR101

HARD_RST#

µP

Figure 1 – Applications schematic using the SMR101 to supervise an embedded controller. As shown, the

SMR101 implements a two-level RESET function including external manual input.

1717 Fox Drive • San Jose CA 95131 •

http://www.summitmicro.com

2091 2.1 4/21/2005

Phone 408 436-9890 • FAX 408 436-9897

12 3 4 5 6 7...9

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与SMR101相关器件

型号	品牌	获取价格	描述	数据表
SMR101_10	SUMMIT	获取价格	programmable reset controller especially designed for embedded consumer electronics.
SMR10103K50A01L4BULK	KEMET	获取价格	Film Capacitor, Polyphenylene Sulphide, 50V, 10% +Tol, 10% -Tol, 0.01uF, Through Hole Moun
SMR10103M400A01L16.5TR16	KEMET	获取价格	Film Capacitor, Polyphenylene Sulphide, 400V, 20% +Tol, 20% -Tol, 0.01uF, 5116,
SMR10104H100J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F
SMR10104H250J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F
SMR10104H400J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F
SMR10104H50J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F
SMR10104H63J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F
SMR10104J100J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F
SMR10104J250J01L4BULK	KEMET	获取价格	SMR Series Metallized Polyphenylene Sulfide F

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