EM6354 EM Microelectronic, EM6354 Datasheet

EM6354

Manufacturer Part Number

EM6354

Description

Reset Circuit

Manufacturer

EM Microelectronic

Datasheet

1.EM6354.pdf (7 pages)

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Meier Automation Equipment Co., Limited

Part Number:

EM6354XSC4B-2.6

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EM6354XSC4B-2.9

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Part Number:

EM6354XSP5B-2.9

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EM6354XSP5B-2.9-

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Description

The EM6354 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. The

threshold defines the minimum allowed voltage which

guarantees the good functionality of the system. When V

rises above V

delay time. This allows the system to stabilize before going

fully active. This delay time, or reset timeout period, can be

adjusted using an external capacitor.

The output is guaranteed to be in the correct state for V

down to 0.8V. There are 11 reset threshold voltages starting

as low as 1.31V and up to 4.63V. The EM6354 features

three output types: active-low push-pull, active-low open-

drain and active-high push-pull.

Small SC70 and SOT23 packages as well as ultra-low

supply current of 2.9µA make the EM6354 an ideal choice

for portable and battery-operated devices.

Typical Application

Pin Configuration

Pin Description

03/06 – rev.I

SOT23-5L

GND

(RESET)

RESET

GND

EXT

for open-drain version only

SOT23-5L

SC70-4L

EM MICROELECTRONIC

, the output remains active for an additional

EM6354

(top view)

GND

Reset Circuit with Adjustable Delay

RESET

Name

GND

N.C.

(RESET)

RESET

SC70-4L

RESET

MPU, DSP

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

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

GND

(SC-82AB)

min=1nF; C

GND

Connect a capacitor between C

max=10000nF). Reset Timeout Period in [ms] is equal to C

conditions are deasserted and then goes high.

conditions are deasserted and then goes low.

-MARIN SA

Not connected. Not internally connected

Features

Applications

Block Diagram

GND

Supply Voltage (5.5V max.)

Adjustable reset timeout period using an external

capacitor

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

3 reset output options:

Immune to short negative V

Guaranteed Reset valid down to 0.8V

Threshold hysteresis: 2.1% of V

Very small SOT23-5L and SC70-4L (SC-82AB)

packages

Home appliances

Modems

Routers, hubs and gateways

WAN, LAN

Handheld GPS

Metering and Instrumentation

TV sets

Automotive systems

Active-low

Active-high

Function

Ground

and GND to set the timeout period

Reference

Voltage

RESET

push-pull

open-drain

push-pull

www.emmicroelectronic.com

EM6354

transients

: 4.63V, 4.4V, 3.08V,

www.DataSheet4U.com

Circuit

Delay

=3.3V)

in [nF]

RESET

(RESET)

Related parts for EM6354

EM6354 Summary of contents

Page 1

... The output is guaranteed the correct state for V down to 0.8V. There are 11 reset threshold voltages starting as low as 1.31V and up to 4.63V. The EM6354 features three output types: active-low push-pull, active-low open- drain and active-high push-pull. Small SC70 and SOT23 packages as well as ultra-low supply current of 2.9µ ...

Page 2

... RoHS Compliance lead-free/green mold compliant [blank] = leaded Reset Threshold Voltage (V 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) Top Marking with 4 Part Number Characters EM6354YSP5B-4.6 AMAA AMAE EM6354YSP5B-4.6+ BMAE EM6354XSP5B-1.3 AMAG EM6354XSP5B-1.8 AMAH EM6354XSP5B-2.6 BMAH EM6354XSP5B-2.9 AMAL AMAA AMAE AMAG BMAG AMAH ...

Page 3

... T (note 4) Threshold hysteresis V HYS Note 1: Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested. V min=0.9V for active-high versions (EM6354Z). DD Note 2: open. RESET (RESET) Note 3: Threshold voltage is specified for V Note 4: Typical variation ∆ ∆ ...

Page 4

... > >1V DD -40°C to +125°C V >2. > >1V DD -40°C to +125°C V >2. >5V DD -40°C to +125°C, only for EM6354Y (open-drain) t SEN Overdrive t POR 4 EM6354 www.DataSheet4U.com Min Typ Max 72 100 122 -0.2V TH (typ) 2 130 255 =100 µ 0 =1.5mA ...

Page 5

... The tolerance of the capacitor should be taken into account POR =1.31V , the following graphic applies : TH 2. vs. V for C POR TH D VTH = 1. 100 vs. Capacitor C POR D 5 EM6354 www.DataSheet4U.com of EM6354. A ceramic D ) can be calculated using the following POR 4.63 =100nF at T =+25°C A VTH = 4.63 V 1000 10000 [nF =+25°C A www.emmicroelectronic.com ...

Page 6

... V DD 350 300 250 [ us ] 200 150 DD 100 100 125 1 Maximum Transient Duration EM6354 www.DataSheet4U.com t P (° (25° 100 125 [°C] vs. Temperature 25°C Reset occurs above this line 10 100 1000 [ mV ] SEN vs. Overdrive V ...

Page 7

... Even though the width of pin 2 on SC70-4L is slightly larger than on so- A1 called 4-pin SC-82AB, the footprint of SC70-4L package is compatible with the footprint of SC-82AB package from other suppliers, and thus suitable for pin-to-pin replacement. Please check footprint on PCB. 7 EM6354 SYM BOL M IN ...

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