EM6324LXSP5B2.6 datasheet, PDF

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EM6324LXSP5B2.6: DescriptionReset Circuit with Manual Reset and Watchdog; File Size502KB，10 Pages; ManufacturerEMMICRO; Websitehttp://www.emmicroelectronic.com

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EM6324LXSP5B2.6 Overview

Reset Circuit with Manual Reset and Watchdog

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EM MICROELECTRONIC

- MARIN SA

EM6323/24

Reset Circuit with Manual Reset and Watchdog

Description

The EM6323/24 are low power, high precision reset ICs

featuring a manual reset and a watchdog inputs. They have

different threshold voltages and several timeout reset periods

POR

) and watchdog timeout periods (t

) for maximum

flexibility in the application. EM6323 has a manual reset (

with internal pull-up) and a watchdog input pins. EM6324 has

only a watchdog input pin (WDI). The watchdog function can

be disabled by driving WDI with a three-state driver or by

leaving WDI unconnected. This is useful when the MCU is in

sleep mode.

Small SOT23-5L package as well as ultra-low supply current

of 3.8µA make the EM6323 and the EM6324 an ideal choice

for portable and battery-operated devices.

Features

Ultra-low supply current of 3.8µA (V

=3.3V)

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

±1.5%

reset threshold accuracy

11 reset threshold voltages V

: 4.63V, 4.4V, 3.08V,

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

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

request)

1.6s watchdog timeout period (6.2ms, 102ms, 25.6s on

request)

3 reset output options:

Active-low

RESET

push-pull

Active-low

RESET

open-drain

Active-high

RESET

push-pull

Detection of microcontroller in sleep mode

Typical Application

RESET

Applications

EM632x

GND

WDI

MPU, DSP

I/O

GND

EXT

for open-drain version only

Fig. 1

Block Diagram

Oscillator

Workstations

Point of sales (POS)

Personal computers

Routers, hubs and switches

Handheld GPS

Vending machines and ATM

Automotive systems

Pin Configuration

RESET

Voltage

Reference

Reset

Logic

+ Timer

EM6323

RESET

GND

(manual reset,

watchdog)

EM6324

push-pull/open-drain

(watchdog)

5 V

RESET

GND

EM6323

GND

WDI

Transition

Detector

Filter

EM6324

WDI

RESET

push-pull

WDI

Watchdog Logic

+ Timer

SOT23-5

Fig. 2

top view

SOT23-5

top view

Fig. 3

Pin Description

SOT23-5L

EM6323 EM6324

Name

RESET

Function

Active-low

RESET

output (push-pull or open-drain)

Ground

Manual Reset input with an internal pull-up 30kΩ resistor. Reset remains active as long as

is low

and for t

POR

after returns high.

can be driven with a CMOS output or shorted to ground with a switch

Active-high RESET output (push-pull)

Watchdog input. WDI must be driven with a CMOS output. If the microcontroller I/O is put in a high

impedance condition, the circuit will detect this condition as a microcontroller in sleep mode and prevent

its watchdog from timing out

Supply Voltage (5.5V max.)

GND

RESET

WDI

2006, EM Microelectronic-Marin SA

03/06 - rev.H

www.emmicroelectronic.com

EM6323/24

Ordering Information

EM6323 L X SP5B - 2.9 +

Part Number:

EM6323

= manual reset & watchdog

EM6324

= watchdog

Delays t

POR

& t

EM6323/24:

[ms]

POR

[ms]

1.6 25 200 1600

6.2

102

1600

25600

("L" is the standard version")

RoHS Compliance:

+ = lead-free/green mold compliant

[blank]

= leaded

Reset Threshold Voltage:

1.3

= 1.31V

1.4

= 1.38V

1.6

= 1.57V

1.7

= 1.66V

1.8

= 1.80V

2.2

= 2.20V

2.6

= 2.63V

2.9

= 2.93V

3.1

= 3.08V

4.4

= 4.40V

4.6

= 4.63V

Package:

SP5B

= 5-pin SOT23-5, tape&reel, 3000 pcs

Reset Output Type:

= Active-low /RESET push-pull

(Active-high RESET push-pull also for EM6324)

= Active-low /RESET open-drain

(Active-high RESET push-pull also for EM6324)

= Active-high RESET push-pull

(EM6323 only)

Note:

subject to availability (see standard versions list below). Please give complete Part Number when ordering

Standard Versions (Top Marking)

Threshold

Voltage

2.6V

2.63V

2.93V

3.08V

2.93V

3.1V

4.40V

2.9V

1.38V

Delay (t

POR

Watchdog timer (t

)

200ms/1600ms

200ms/25600ms

Output Type

Active-high push-pull RESET

Active-low push-pull

RESET

Active-low push-pull

RESET

Active-low push-pull

RESET

Active-low push-pull

RESET

Active-low push-pull

RESET

Active-low open-drain

RESET

Active-low open-drain

RESET

Active-low open-drain

RESET

Active-low push-pull

RESET

Active-low push-pull

RESET

Active-low push-pull

RESET

Active-low open-drain

RESET

Active-low push-pull

RESET

Package

SOT23-5L

Part Number

EM6323LZSP5B-2.6

EM6323LXSP5B-2.6

EM6323LXSP5B-2.6+

EM6323LXSP5B-2.9

EM6323LXSP5B-2.9+

EM6323LXSP5B-3.1

EM6323LYSP5B-2.9

EM6323LYSP5B-2.9+

EM6323LYSP5B-3.1

EM6323LXSP5B-3.1

EM6324LXSP5B-4.4

EM6324LXSP5B-4.4+

EM6324LYSP5B-2.9

EM6324QXSP5B-1.4

Top

Top Marking

with 4

Marking

characters

APL5

APLG

KF##

BPLG

APLH

K0##

BPLH

APLJ

APLU

K6##

BPLU

APLV

APLJ

AQMK

K9##

BQMK

AQLU

AQQB

Top marking is standard from 2006. No bottom marking exists. Where ## refers to the lot number (EM internal reference

only)

Top marking with 4 characters is standard from 2003. For lead-free/green mold (RoHS) parts, the first letter of top

marking with 4 characters begins with letter “B” instead of letter “A”. Bottom marking indicates the lot number.

Standard Versions (samples)

Part Number

EM6323LXSP5B-2.6+

EM6323LXSP5B-2.9+

Part Number

EM6323LYSP5B-2.9+

EM6324LXSP5B-4.4+

Sample stock is generally held on

standard versions

only. Non standard versions have a 30,000 pieces minimum order

quantity. Please contact factory for other versions not shown here and for availability of non standard versions.

2006, EM Microelectronic-Marin SA

03/06 - rev.H

www.emmicroelectronic.com

EM6323/24

Absolute Maximum Ratings

Parameter

Voltage at V

to GND

Minimum voltage at any signal pin

Maximum voltage at any signal pin

Handling Procedures

Symbol

MIN

MAX

ESD

MAX

STG

Conditions

-0.3V to +6V

GND - 0.3V

+ 0.3V

2000V

250°C x 10s

-65°C to +150°C

Electrostatic discharge max. to

MIL-STD-883C method 3015.7

with ref. to V

Max. soldering conditions

Storage Temperature Range

This device has built-in protection against high static

voltages or electric fields; however, anti-static

precautions must be taken as for any other CMOS

component. Unless otherwise specified, proper

operation can only occur when all terminal voltages are

kept within the voltage range. Unused inputs must

always be tied to a defined logic voltage level.

Operating Conditions

Parameter

Supply voltage

Operating Temperature

Input transition rise and fall rate

and WDI

Stresses above these listed maximum ratings may

cause permanent damages to the device. Exposure

beyond specified operating conditions may affect device

reliability or cause malfunction.

Symbol Min Max Unit

0.9 5.5

-40 +125 °C

100 ns/V

Electrical Characteristics

Unless otherwise specified: V

= 0.9V to 5.5V, T

=-40°C to +125°C (note 1).

Parameter

Symbol

Conditions

=1.5V

Supply current (note 2)

=3.3V

=5.0V

EM6323/24 – 1.3

+25°C

-40°C to +125°C

+25°C

-40°C to +125°C

+25°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

+25°C

-40°C to +85°C

-40°C to +125°C

Min

1.290

1.245

1.221

1.359

1.311

1.286

1.546

1.492

1.463

1.635

1.577

1.547

1.773

1.710

1.678

2.167

2.090

2.050

2.591

2.499

2.451

2.886

2.784

2.731

3.034

2.926

2.871

4.334

4.180

4.101

4.561

4.399

4.315

Typ

2.4

3.86

5.89

1.31

Max

4.4

6.8

6.1

9.9

8.6

11.6

1.330

1.382

1.387

1.401

1.456

1.461

1.594

1.656

1.663

1.685

1.751

1.758

1.827

1.899

1.906

2.233

2.321

2.330

2.669

2.775

2.785

2.974

3.091

3.103

3.126

3.249

3.262

4.466

4.642

4.660

4.699

4.885

4.903

Unit

µA

EM6323/24 – 1.4

1.38

EM6323/24 – 1.6

1.57

EM6323/24 – 1.7

1.66

EM6323/24 – 1.8

Threshold voltage

(note 3)

1.80

EM6323/24 – 2.2

2.20

EM6323/24 – 2.6

2.63

EM6323/24 – 2.9

2.93

EM6323/24 – 3.1

3.08

EM6323/24 – 4.4

4.40

EM6323/24 – 4.6

4.63

Note 1:

Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.

Note 3:

Threshold voltage is specified for V

falling.

2006, EM Microelectronic-Marin SA

03/06 - rev.H

www.emmicroelectronic.com

EM6323/24

Electrical Characteristics

(continued)

Unless otherwise specified: V

= 0.9V to 5.5V, T

=-40°C to +125° C (note 1).

Parameter

Threshold hysteresis

Symbol

HYS

Conditions

=+25°C

EM6323/24 C-G-L-Q

from 0V to V

TH (typ)

+15%

= +25°C

(note 2 and 4)

EM6323/24 A-E-J-N

EM6323/24 B-F-K-P

EM6323/24 D-H-M-R

Min

160

0.7

1280

0.8

Typ

2.1%•V

200

1.56

1600

6.25

100

25600

8.3

0.3

Max

240

3.8

1920

255

0.3

0.35

0.3

0.35

0.5

0.3

•

1920

7.5

120

30720

0.3

•

Unit

Reset timeout period

POR

Propagation delay time

RESET (RESET)

delay

Open-drain RESET output

Voltage

drops from V

TH (typ)

+0.2V to V

TH (typ)

-0.2V

(note 2). T

= +25°C

>1V

=100

=1.5mA

=3mA

=100

=1.5mA

=3mA

=-30

=-1.5mA

=-3mA

>2.5V

>5V

>1V

Push-pull RESET /

RESET

Output voltage

Output leakage current

LEAK

WDI

low

WDI

high

>2.5V

>5V

>1.1V

>2.5V

>5V

Only for EM6323/24_Y (open-drain)

WATCHDOG INPUT (WDI)

WDI Input low

WDI Input high

Pulse width at WDI

= +25°C

EM6323/24 J-K-L-M

Watchdog timeout period

(note 6)

EM6323/24 A-B-C-D

EM6323/24 E-F-G-H

EM6323/24 N-P-Q-R

High-level Input Current

Low-level Input Current

MRT

low

MRT

high

PMD

=-40°C to +125°C

= +25°C

WDI connected to VDD, T

= +25°C

WDI connected to GND, T

= +25°C

0.7

•

1280

20480

0.7

•

MANUAL RESET (

) –

EM6323 only

Input low

Input high

to Reset delay

Pulse width at

(note 5)

Ω

Internal Pull-up

resistor

Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.

WDI,

and

RESET

(RESET)

open.

Threshold voltage is specified for V

falling.

Standard version for t

POR

is 200ms (typ). Other option (1.6ms, 25ms, 1600ms) are available by mask option and

upon minimum order quantity. Please contact EM sales.

Note 5:

Pulse width must be greater than 1

s to ensure the

RESET (RESET)

to go active.

Note 6:

Standard version for t

is 1600ms (typ). Other option (6.2ms, 102ms, 25.6s) are available by mask option and

upon minimum order quantity. Please contact EM sales.

Note 1:

Note 2:

Note 3:

Note 4:

2006, EM Microelectronic-Marin SA

03/06 - rev.H

www.emmicroelectronic.com

EM6323/24

Timing Waveforms

SEN

HYS

Overdrive

0.9V

logic "1"

logic "0"

logic "1"

RESET

logic "0"

logic "1"

RESET

logic "0"

Fig. 4

PMD

POR

logic "1"

WDI

logic "0"

logic "1"

RESET

logic "0"

logic "1"

RESET

logic "0"

Fig. 5

POR

Note 7:

SEN

= Maximum Transient Duration. Please refer to figure on the next page.

Note 8:

Overdrive = V

-V

. Please refer to figure on the next page.

2006, EM Microelectronic-Marin SA

03/06 - rev.H

www.emmicroelectronic.com

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