em6325 EM Microelectronic, em6325 Datasheet

em6325

Manufacturer Part Number

em6325

Description

Reset Circuit With Manual Reset

Manufacturer

EM Microelectronic

Datasheet

1.EM6325.pdf (7 pages)

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Meier Automation Equipment Co., Limited

Part Number:

em6325AXSK4B-2.6+

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em6325AXSK4B-2.9+

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em6325AXSK4B-4.4+

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Meier Automation Equipment Co., Limited

Part Number:

em6325AXSK4B-4.6+

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em6325CYSP5B-2.9

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Description

The EM6325 is an ultra-low current reset circuit available in a

large variety of configurations and very small packages for

maximum flexibility in all end-applications up to 125°C and

using power supplies between 1.5V and 5.5V.

This circuit monitors the supply voltage of any electronic

system, and generates the appropriate reset signal after a

fixed reset timeout period. The threshold defines the

minimum allowed voltage which guarantees the good

functionality of the system. When V

output remains active for an additional delay time. This

allows the system to stabilize before getting fully active.

This circuit features a Manual Reset: an input that asserts

reset when pulled low (

Small SC70-5L and SOT23-5L packages as well as ultra-low

supply current of 2.9μA make the EM6325 an ideal choice

for portable and battery-operated devices.

Typical Application

Block Diagram

Pin Description

01/08 – rev. M

SOT23-5L / SC70-5L

GND

EXT

for open-drain version only

EM MICROELECTRONIC

EM6325

Reference

Voltage

GND

Filter

RESET

Name

GND

Reset Circuit with Manual Reset

with internal pull-up).

Active-low RESET output. RESET remains low for the reset timeout period and

then goes high after all reset conditions are deasserted or after MR goes from low

to high

Ground

Active-high RESET output. RESET remains high for the reset timeout period and

then goes low after all reset conditions are deasserted or after MR goes from low to

high

Manual Reset input with an internal pull-up 15k Ω resistor. Reset remains active as

long as MR is low and for t

CMOS output or shorted to ground with a switch

Supply Voltage (5.5V max.)

rises above V

RESET

MPU, DSP

Oscillator

Reset

Logic

GND

RESET

, the

POR

after MR returns high. MR can be driven with a

- MARIN SA

Features

Applications

Pin Configuration

push-pull / open-

Function

RESET

drain

Manual reset function

200ms reset timeout period (1.6ms, 25ms, 1600ms on

request)

Ultra-low supply current of 2.9μA (V

Operating temperature range: -40°C to +125°C

±1.5% reset threshold accuracy

11 reset threshold voltages V

2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V

2 reset output options:

Immune to short negative V

Guaranteed Reset valid down to 0.9V

Threshold hysteresis: 2.1% of V

Very small SOT23-5L, SC70-5L

Computers

Servers and workstations

Modems

Wireless communication

Metering

Playstations

PDA , Webpad

RESET

SOT23-5 / SC70-5

GND

push-

pull

Active-low

top view

RESET

(top view)

push-pull

open-drain

www.emmicroelectronic.com

EM6325

transients

: 4.63V, 4.4V, 3.08V,

=3.3V)

Related parts for em6325

em6325 Summary of contents

Page 1

... EM MICROELECTRONIC Reset Circuit with Manual Reset Description The EM6325 is an ultra-low current reset circuit available in a large variety of configurations and very small packages for maximum flexibility in all end-applications up to 125°C and using power supplies between 1.5V and 5.5V. This circuit monitors the supply voltage of any electronic system, and generates the appropriate reset signal after a fixed reset timeout period ...

Page 2

... EM6325AXSP5B-3.1+ EM6325CXSC5B-2.6+ EM6325CXSC5B-2.9+ EM6325CXSP5B-1.3+ Sample stock is generally held on standard versions only. Please contact factory for other versions not shown here and for availability of non standard versions. Copyright © 2008, EM Microelectronic-Marin SA 01/08 – rev. M EM6325 C X SP5B 2 25ms D = 1600ms 2) Top Marking with 4 Characters ...

Page 3

... EM6325 – 2.2 -40°C to +85°C TH -40°C to +125°C +25°C EM6325 – 2.6 -40°C to +85°C -40°C to +125°C +25°C EM6325 – 2.9 -40°C to +85°C -40°C to +125°C +25°C EM6325 – 3.1 -40°C to +85°C -40°C to +125°C +25°C EM6325 – 4.4 -40°C to +85°C -40° ...

Page 4

... >5V I =3mA DD OL =-30 μ > >2.5V I =-1.5mA >5V I =-3mA DD OH Only for EM6325_Y (open-drain) low high T = +25° PMD T =-40°C to +125° RESET (RESET) 4 EM6325 Min Typ Max EM6325C 155 200 224 EM6325A 0.7 1.6 3.8 EM6325B 19.4 25 ...

Page 5

... MR is driven from long cable or the device is used in a noisy provide additional noise immunity (stronger external additional EM6325 PMD POR t (200ms nominal for EM6325C) after POR create www.emmicroelectronic.com HYS ...

Page 6

... 100 125 [ ° POR (°C) t POR (25° 100 125 [ °C ] vs. Temperature POR ) POR 25° EM6325 300 250 200 150 100 50 0 -50 - 100 125 [ °C ] Propagation Time t vs. Temperature P 400 350 300 250 Reset occurs ...

Page 7

... Copyright © 2008, EM Microelectronic-Marin SA 01/08 – rev. M SOT23- SC70- NOTE: A All dimensions are in millimeters Dimensions are inclusive of plating Dimensions are exclusive of mold flash & metal burr All specifications comply to EIAJ SC70 7 EM6325 SYM BOL M IN TYP 0.90 1.30 1. 0.05 0.08 0. ...

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