EM6325 Data sheet - EM Microelectronic

EM MICROELECTRONIC - MARIN SA
EM6325
Reset Circuit with Manual Reset
Description
Features
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 VDD rises above VTH, the
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 ( MR with internal pull-up).
Small SOT23-5L package as well as ultra-low supply current
of 2.9μA make the EM6325 an ideal choice for portable and
battery-operated devices.











VDD
*
VDD
RESET
EM6325
RESET
1.5% reset threshold accuracy
11 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V,
2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V
2 reset output options:
Active-low RESET push-pull
Active-low RESET open-drain
Typical Application
VDD
Manual reset function
200ms reset timeout period (1.6ms, 25ms, 1600ms on
request)
Ultra-low supply current of 2.9μA (VDD=3.3V)
Operating temperature range: -40°C to +125°C
Immune to short negative VDD transients
Guaranteed Reset valid down to 0.9V
Threshold hysteresis: 2.1% of VTH
Very small SOT23-5L, SOT143-4L
Applications
RESET

MPU, DSP

RESET

MR
GND

GND
GND

* REXT for open-drain version only


Block Diagram
Computers
Servers and workstations
Modems
Wireless communication
Metering
Playstations
PDA , Webpad
Pin Configuration (top view)
VDD
RESET
Oscillator
push-pull / opendrain
+
Voltage
Reference
-
GND
Reset
Logic
RESET
RESET
pushpull
RESET
1
5
VDD
GND
1
4
RESET
2
3
VDD
2
3
4
MR
SOT23-5
top view
push-pull / opendrain
MR
SOT143-4
top view
Filter
MR
GND
Pin Description
Pin
Name
SOT23-5L
SOT143-4L
1
2
RESET
2
1
GND
Function
Active-low RESET output. RESET remains low for the reset timeout period and
3
RESET
4
3
MR
5
4
VDD
Copyright 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
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 resistor. Reset remains active as
long as MR is low and for tPOR after MR returns high. MR can be driven with a
CMOS output or shorted to ground with a switch
Supply Voltage (5.5V max.)
1
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420005-A01, 2.0
EM6325
Ordering Information
EM6325 C X SP5B - 2.9 +
Delay (tPOR ):
C = 200ms
A = 1.6ms
RoHS Compliance:
+ = lead-free/green mold compliant
[blank] = leaded
B = 25ms
D = 1600ms
Reset Threshold Voltage (V TH ):
1.3 = 1.31V
2.6 = 2.63V
1.4 = 1.38V
2.9 = 2.93V
1.6 = 1.57V
3.1 = 3.08V
1.7 = 1.66V
4.4 = 4.40V
1.8 = 1.80V
4.6 = 4.63V
2.2 = 2.20V
Reset Output Type:
X = Active-low /RES push-pull
Active-high RES push-pull
Y = Active-low /RES open-drain
Active-high RES push-pull
Z = Active-high RES push-pull
Package:
SP5B = SOT23-5, Tape&Reel 3000 pcs
SK4B = SOT143-4, Tape&Reel 3000 pcs
Standard Versions (Top Marking)
Part Number
EM6325AXSP5B-2.9+
EM6325CXSP5B-1.3+
EM6325CXSP5B-2.6+
EM6325CXSP5B-2.9+
EM6325CXSP5B-3.1+
EM6325CXSP5B-4.6+
EM6325CYSP5B-2.9+
EM6325CYSP5B-4.6+
EM6325CXSK4B-2.9+
1)
2)
Top
Top Marking 2)
Marking1)
with 4
Characters
CN##
CP##
CS##
BZ##
CT##
C3##
BY##
C0##
CR##
BNAH
BNCA
BNCG
BNCH
BNCJ
BNCL
BNCU
BNCX
Top marking is the 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
Part Number
EM6325AXSP5B-2.9+
EM6325CXSP5B-3.1+
EM6325CXSP5B-4.6+
EM6325CXSP5B-1.3+
EM6325CXSK4B-2.9+
EM6325CXSP5B-2.6+
EM6325CXSP5B-2.9+
EM6325CYSP5B-2.6+
EM6325CYSP5B-4.6+
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 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
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EM6325
Absolute Maximum Ratings
Parameter
Voltage at VDD to GND
Minimum voltage at any signal pin
Maximum voltage at any signal pin
Electrostatic discharge max. to
MIL-STD-883C method 3015.7
with ref. to VSS
Max. soldering conditions
Storage Temperature Range
Handling Procedures
Symbol
Conditions
VDD
VMIN
VMAX
-0.3V to +6V
GND - 0.3V
VDD + 0.3V
VESD
2000V
TMAX
TSTG
250°C x 10s
-65°C to +150°C
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
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.
Parameter
Symbol Min Max Unit
Supply voltage
Operating Temperature
VDD
TA
0.9
-40
5.5
+125
V
°C
Electrical Characteristics
Unless otherwise specified: VDD= 0.9V to 5.5V, TA=-40°C to +125°C (note 1).
Parameter
Symbol
Conditions
Min
+25°C
VDD=1.5V
-40°C to +125°C
+25°C
VDD=3.3V
-40°C to +125°C
+25°C
VDD=5.0V
-40°C to +125°C
+25°C
EM6325 – 1.3
-40°C to +85°C
-40°C to +125°C
+25°C
EM6325 – 1.4
-40°C to +85°C
-40°C to +125°C
+25°C
EM6325 – 1.6
-40°C to +85°C
-40°C to +125°C
+25°C
EM6325 – 1.7
-40°C to +85°C
-40°C to +125°C
+25°C
EM6325 – 1.8
-40°C to +85°C
-40°C to +125°C
+25°C
EM6325 – 2.2
-40°C to +85°C
-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°C to +125°C
+25°C
EM6325 – 4.6
-40°C to +85°C
-40°C to +125°C
TA=+25°C
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
-
Supply current (note 2)
Threshold voltage
(note 3)
Threshold hysteresis
IDD
VTH
VHYS
Typ
Max
2.3
2.9
3.4
1.31
1.38
1.57
1.66
1.80
2.20
2.63
2.93
3.08
4.40
4.63
2.1%VTH
4.6
7
5.5
8.3
6.3
9.6
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
A
V
V
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 VDD falling.
Copyright 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
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EM6325
Electrical Characteristics (continued)
Unless otherwise specified: VDD= 0.9V to 5.5V, TA=-40°C to +125° C (note 1).
Parameter
Symbol
Conditions
Min
Typ
Max
155
200
224
EM6325A
0.7
1.6
3.8
EM6325B
19.4
25
28
EM6325D
1240
1600
1792
2
130
255
0.3
EM6325C
Reset timeout period
Propagation delay time
VDD to RESET (RESET) delay
Open-drain RESET output
Voltage
tPOR
tP
VOL
VOL
Push-pull RESET / RESET
Output voltage
VOH
Output leakage current
ILEAK
(note 2 and 4)
VDD from 0V to VTH (typ)+15%
TA= +25°C
VDD drops from VTH (typ)+0.2V to VTH (typ)-0.2V
(note 2). TA= +25°C
Unit
ms
s
VDD>1V
IOL=100A
-
-
VDD>2.5V
IOL=1.5mA
-
-
0.3
VDD>5V
IOL=3mA
-
-
0.35
VDD>1V
IOL=100A
-
-
0.3
VDD>2.5V
IOL=1.5mA
-
-
0.3
VDD>5V
IOL=3mA
-
-
0.35
VDD>1V
IOH=-30A
0.8
-
-
VDD>2.5V
IOH=-1.5mA
2
-
-
VDD>5V
IOH=-3mA
4
-
-
-
-
0.5
A
0.3VDD
V
Only for EM6325_Y (open-drain)
V
V
MANUAL RESET ( MR )
MR Input low
VMRT low
MR Input high
VMRT high
MR to Reset delay
tMD
Pulse width at MR (note 5)
tPMD
MR Internal Pull-up resistor
RMR
TA= +25°C
0.7VDD
V
s
0.3
s
1
TA=-40°C to +125°C
4.8
15
31
k
Note 1: Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.
Note 2: RESET (RESET) open.
Note 4: Standard version for tPOR is 200ms (typ), available at all times. 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.
Copyright 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
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EM6325
Timing Waveforms
tSEN
VDD
VHYS
VTH
Overdrive
0.8V
t
logic "1"
tPMD
MR
logic "0"
t
logic "1"
tPOR
RESET
tP
tMD
logic "0"
t
logic "1"
tPOR
RESET
logic "0"
t
Note 6: tSEN = Maximum Transient Duration. Please refer to figure on the next page.
Note 7: Overdrive = VTH -VDD. Please refer to figure on the next page.
Manual Reset Input
A logic low on MR asserts a reset. Reset remains asserted while MR is low, and for tPOR (200ms nominal for EM6325C) after
it returns high. MR has an internal 15k pull-up resistor, so it can be left open if unused. This input can be driven with
CMOS logic levels or with open-drain outputs. Connect a normally open momentary switch from MR to VSS to create a
manual-reset function; debounce circuitry is integrated. If MR is driven from long cable or the device is used in a noisy
environment, connect a 0.1F capacitor from MR to VSS to provide additional noise immunity (stronger external additional
pull-up resistor can also be added).
Copyright 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
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EM6325
Typical Operating Characteristics
(Typical values are at TA=+25°C unless otherwise noted, MR , RESET and RESET open.)
7
300
VDD 3 . 3 V
6
250
5
200
VDD 5 . 0 V
[ uA ]
[ us ]
4
150
3
VDD 1. 5 V
100
2
50
1
0
-50
-25
0
25
50
75
0
-50 -25
100 125
0
25
[ °C ]
50
75
100 125
[ °C ]
IDD vs. Temperature
Propagation Time tP vs. Temperature
200%
400
175%
350
tPOR (°C)
tPOR (25°C)
150%
300
125%
250
[ us ]
100%
200
75%
150
50%
100
25%
50
Reset occurs
above this line
0
0%
-50 -25
0
25
50
75
1
100 125
10
[ °C ]
100
1000
[ mV ]
Reset Timeout Period tPOR vs. Temperature
(normalized with respect to tPOR 25°C)
Maximum Transient Duration tSEN
vs. Overdrive VTH-VDD
8%
6%
4%
2%
0%
-2%
-4%
-6%
-8%
-50
-25
0
25
50
75
100
125
[°C]
Threshold Voltage Variation vs. Temperature (normalized)
Copyright 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
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EM6325
Package Information
D
E1
SOT23-5L
C
A1 A2 A
b
E
e
SYM BOL
A
A1
A2
b
C
D
E
E1
e
e1
L
e1
M IN
0.90
0.05
0.90
0.35
0.08
2.80
2.60
1.50
L
TYP
1.30
0.08
1.15
2.90
2.80
M AX
1.45
0.15
1.30
0.50
0.20
3.00
3.00
1.75
0.95
1.90
0.45
Dimensions are in mm
SOT143-4L
SYMBOL
A
A1
A2
b
b2
c
D
E1
E
e
e1
L
L1
TYP
1.04
0.10
0.94
0.41
0.79
0.10
2.82
1.27
2.44
1.92
0.20
0.41 0.43
0.53 0.58
MIN
0.97
0.05
0.89
0.36
0.76
0.08
2.79
1.22
2.11
MAX
1.12
0.15
0.99
0.46
0.84
0.20
2.87
1.32
2.64
0.48
0.64
NOTE:



Copyright 2015, EM Microelectronic-Marin SA
6325-DS, Version 3.0, 2-Jun-15
7
All dimensions are in millimeters
Dimensions are exclusive of mold flash &
metal burr
Based from JEDEC TO-253
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420005-A01, 2.0
EM6325
Traceability for small packages
Due to the limited space on the package surface, the bottom marking contains a limited number of characters that provide only partial
information for lot traceability. Full information for complete traceability is however provided on the packing labels of the product at
delivery from EM. It is highly recommended that the customer insures full lot traceability of EM product in his final product.
EM Microelectronic-Marin SA (“EM”) makes no warranties for the use of EM products, other than those expressly contained in EM's
applicable General Terms of Sale, located at http://www.emmicroelectronic.com. EM assumes no responsibility for any errors which may
have crept into this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does
not make any commitment to update the information contained herein.
No licenses to patents or other intellectual property rights of EM are granted in connection with the sale of EM products, neither expressly
nor implicitly.
In respect of the intended use of EM products by customer, customer is solely responsible for observing existing patents and other
intellectual property rights of third parties and for obtaining, as the case may be, the necessary licenses.
Important note: The use of EM products as components in medical devices and/or medical applications, including but not limited
to, safety and life supporting systems, where malfunction of such EM products might result in damage to and/or injury or death
of persons is expressly prohibited, as EM products are neither destined nor qualified for use as components in such medical
devices and/or medical applications. The prohibited use of EM products in such medical devices and/or medical applications is
exclusively at the risk of the customer
Product qualification is performed according to internal EM quality standards for industrial products. For any special requirement (eg. automotive grade) please
contact EM Microelectronic-Marin S.A.
Copyright 2015, EM Microelectronic-Marin SA
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420005-A01, 2.0