EM EM6353BXSC5B-1.3 Reset circuit with fixed delay Datasheet

EM MICROELECTRONIC - MARIN SA
EM6353
Reset Circuit with Fixed Delay
Description
Features
The EM6353 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.
The EM6353 features three output types: active-low pushpull, active-low open-drain and active-high push-pull.
Small SC70-5L and SOT23-3L packages as well as ultra-low
supply current of 2.9µA make the EM6353 an ideal choice
for portable and battery-operated devices.
!
Typical Application
!
!
!
!
!
!
!
!
!
VDD
*
VDD
RESET
EM6353
!
MPU, DSP
!
!
!
GND
GND
* REXT for open-drain version only
!
!
Pin Configuration (top view)
!
!
RESET 1
(RESET)
1
3
RESET 2
(RESET)
VDD
SOT23-3L
SOT23-3L
"alpha" bonding
NC
1
2
NC
3
5 RESET
(RESET)
GND 4
RESET
5
(RESET)
4 GND
" Active-high RESET push-pull
No external components
Immune to short negative VDD transients
Guaranteed Reset valid down to 0.8V
Threshold hysteresis: 2.1% of VTH
Very small SOT23-3L and SC70-5L packages
Mobile phones
Set-top boxes
Video, digital cameras, DVD players and recorders
Modems
Personal computers
Switching hubs
Copiers and fax
Utility meters
Automotive systems
2
"beta" bonding
VDD
!
3 GND
VDD
Active-low RESET open-drain
Applications
RESET
GND
GND
±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
3 reset output options:
" Active-low RESET push-pull
"
!
VDD
200ms reset timeout period (25ms on request)
Ultra-low supply current of 2.9µA (VDD=3.3V)
Operating temperature range: -40°C to +125°C
Block Diagram
VDD
3 NC
Oscillator
2 VDD
+
1 NC
Voltage
Reference
SC70-5L
-
Reset
Logic
RESET
RESET
(compatible with SC70-3 by rotating 180°)
GND
Pin Description
Function
Pin
SOT23-3L
“beta”
1
2
3
-
SOT23-3L
“alpha”
3
1
2
-
SC70-5L
4
Name
GND
RESET
Active-low RESET output. RESET remains low for the reset timeout period
after all reset conditions are deasserted and then goes high.
RESET
Active-high RESET output. RESET remains high for the reset timeout period
after all reset conditions are deasserted and then goes low.
5
2
1,3
Ground
VDD
N.C.
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
Supply Voltage (5.5V max.)
Not connected. Not internally connected.
1
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EM6353
Ordering Information
EM6353 B X 2SP3B - 2.9 +
Delay (tPOR):
B = 200ms
A = 25ms
RoHS Compliance:
+ = lead-free/green mold compliant
[blank] = leaded
Reset Output Type:
X = Active-low /RES push-pull
Y = Active-low /RES open-drain
Z = Active-high RES push-pull
Reset Threshold Voltage (VTH):
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
Package & Bonding:
1SP3B = SOT23-3, "alpha", Tape&Reel 3kpcs
2SP3B = SOT23-3, "beta", Tape&Reel 3kpcs
SC5B = SC70-5, Tape&Reel 3kpcs
Note:
Subject to availability (see standard versions list below). Please give complete Part Number when ordering. All
parts are offered in tape-and-reel only (3000 units).
Standard Versions (Top Marking)
Part Number
EM6353BX1SP3B-1.3
EM6353BX1SP3B-2.6
EM6353BX1SP3B-2.6+
EM6353BX1SP3B-2.9
EM6353BX1SP3B-2.9+
EM6353BX1SP3B-4.4
EM6353BX1SP3B-4.4+
EM6353BX1SP3B-4.6
EM6353BX1SP3B-4.6+
EM6353BX2SP3B-1.3
EM6353BX2SP3B-1.8
EM6353BX2SP3B-1.8+
EM6353BX2SP3B-2.6
EM6353BX2SP3B-2.6+
EM6353BX2SP3B-2.9
EM6353BX2SP3B-2.9+
EM6353BX2SP3B-3.1
EM6353BX2SP3B-3.1+
EM6353BX2SP3B-4.4
EM6353BX2SP3B-4.4+
EM6353BX2SP3B-4.6
EM6353BX2SP3B-4.6+
EM6353BXSC5B-1.3
EM6353BXSC5B-1.8
EM6353BXSC5B-2.6
EM6353BXSC5B-2.6+
EM6353BXSC5B-2.9
EM6353BXSC5B-3.1
Top Marking
Top
Marking1) 2) with 4
Characters
ALBA
ALBG
BLBG
ALBH
C1##
BLBH
ALBK
C2##
BLBK
ALBL
BLBL
ALWA
ALWE
BLWE
AW##
ALWG
BW##
BLWG
AR##
ALWH
BR##
BLWH
PC##
ALWJ
C5##
BLWJ
ALWK
C8##
BLWK
ALWL
BLWL
ALWA
ALWE
AW##
ALWG
BW##
BLWG
AR##
ALWH
PC##
ALWJ
Part Number
EM6353BXSC5B-3.1
EM6353BXSC5B-4.6
EM6353BY1SP3B-2.2
EM6353BY1SP3B-2.6
EM6353BY1SP3B-2.9
EM6353BY1SP3B-2.9+
EM6353BY1SP3B-3.1
EM6353BY1SP3B-4.4
EM6353BY1SP3B-4.6
EM6353BY2SP3B-2.6
EM6353BY2SP3B-2.6+
EM6353BY2SP3B-2.9
EM6353BY2SP3B-2.9+
EM6353BY2SP3B-3.1
EM6353BY2SP3B-3.1+
EM6353BY2SP3B-4.4
EM6353BY2SP3B-4.6
EM6353BY2SP3B-4.6+
EM6353BYSC5B-2.9
EM6353BYSC5B-2.9+
EM6353BYSC5B-4.4
EM6353BZ2SP3B-2.9
EM6353BZ2SP3B-2.9+
EM6353BZ2SP3B-3.1
EM6353BZ2SP3B-3.1+
EM6353BZ2SP3B-4.6
EM6353BZ2SP3B-4.6+
Top Marking
Top
Marking1) 2) with 4
Characters
C5##
BLWJ
ALWL
ALBS
ALBT
AS##
ALBU
BS##
BLBU
ALBV
ALBW
ALBX
ALWT
C9##
BLWT
ALWU
C7##
BLWU
ALWV
BLWV
ALWW
ALWX
BLWX
ALWU
C7##
BLWU
ALWW
AV##
ALW6
BV##
BLW6
ALW7
BLW7
ALW9
CB##
BLW9
1)
Top marking is the standard from 2006. No bottom marking exists. Where ## refers to the lot number (EM internal
reference only)
2)
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.
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
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EM6353
Standard Versions (samples)
Part Number
Part Number
EM6353BX1SP3B-2.6+
EM6353BXSC5B-2.9
EM6353BX1SP3B-2.9+
EM6353BXSC5B-3.1
EM6353BX1SP3B-4.4+
EM6353BY1SP3B-2.9+
EM6353BX1SP3B-4.6+
EM6353BY2SP3B-2.9+
EM6353BX2SP3B-1.8+
EM6353BY2SP3B-3.1+
EM6353BX2SP3B-2.6+
EM6353BY2SP3B-4.6+
EM6353BX2SP3B-2.9+
EM6353BYSC5B-2.9+
EM6353BX2SP3B-3.1+
EM6353BZ2SP3B-2.9+
EM6353BX2SP3B-4.4+
EM6353BZ2SP3B-3.1+
EM6353BX2SP3B-4.6+
EM6353BZ2SP3B-4.6
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.
Handling Procedures
Absolute Maximum Ratings
Parameter
Symbol
Conditions
Voltage at VDD to GND
Minimum voltage at any signal pin
Maximum voltage at any signal pin
VDD
VMIN
VMAX
-0.3V to +6V
GND - 0.3V
VDD + 0.3V
Electrostatic discharge max. to
MIL-STD-883C method 3015.7
with ref. to VSS
VESD
2000V
Max. soldering conditions
Storage Temperature Range
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
Parameter
Supply voltage (note 1)
Operating Temperature
Stresses above these listed maximum ratings may cause
permanent damage to the device. Exposure beyond
specified operating conditions may affect device
reliability or cause malfunction.
Symbol Min Max Unit
VDD
0.8 5.5
V
TA
-40 +125 °C
Electrical Characteristics
Unless otherwise specified: VDD= 0.8V to 5.5V, TA=-40°C to +125°C (note 1).
Parameter
Symbol
Conditions
Min
+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
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
VDD=1.5V
Supply current (note 2)
IDD
VDD=3.3V
VDD=5.0V
Threshold voltage
(note 3)
VTH
EM6353 – 1.3
EM6353 – 1.4
EM6353 – 1.6
EM6353 – 1.7
EM6353 – 1.8
EM6353 – 2.2
EM6353 – 2.6
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
3
Typ
2.3
2.9
3.4
1.31
1.38
1.57
1.66
1.80
2.20
2.63
Max
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
Unit
µA
V
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EM6353
EM6353 – 2.9
EM6353 – 3.1
EM6353 – 4.4
EM6353 – 4.6
Threshold hysteresis
Note 1:
Note 3:
VHYS
-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
TA=+25°C
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
-
2.93
3.08
4.40
4.63
2.1%•VTH
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
-
V
Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.
VDD min=0.9V for active-high versions (EM6353_Z).
Threshold voltage is specified for VDD falling.
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
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EM6353
Electrical Characteristics
(continued)
Unless otherwise specified: VDD= 0.8V to 5.5V, TA=-40°C to +125°C (note 1).
Parameter
Symbol
Reset timeout period
Propagation delay time
VDD to RESET (RESET) delay
Open-drain RESET output
Voltage
tPOR
VOL
Push-pull RESET / RESET
Output voltage
VOH
ILEAK
Min
Typ
Max
EM6353B
155
200
224
EM6353A
19.4
25
28
2
130
255
VDD drops from VTH (typ)+0.2V to VTH (typ)-0.2V
(note 2). TA= +25°C
tP
VOL
Output leakage current
Conditions
VDD from 0V to VTH (typ)+15%
(note 2 and 4). TA= +25°C
VDD>1V
IOL=100µA
-
-
0.3
VDD>2.5V
IOL=1.5mA
-
-
0.3
VDD>5V
IOL=3mA
-
-
0.3
VDD>1V
IOL=100µA
-
-
0.3
VDD>2.5V
IOL=1.5mA
-
-
0.3
VDD>5V
IOL=3mA
-
-
0.35
VDD>1V
IOH=-30µA
0.8
-
-
VDD>2.5V
IOH=-1.5mA
2
-
-
VDD>5V
IOH=-3mA
4
-
-
-
-
0.5
Only for EM6353_Y (open-drain)
Unit
ms
µs
V
V
µA
Note 1:
Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.
VDD min=0.9V for active-high versions (EM6353_Z).
Note 2:
Note 4:
RESET (RESET) open.
Standard version is EM6353B (tPOR =200ms), available at all times. EM6353A (tPOR =25ms) is available by mask option and upon
minimum order quantity. Please contact EM sales.
Timing Waveforms
tSEN
VDD
VTH
Overdrive
VHYS
0.8V
t
logic "1"
tPOR
RESET
tP
logic "0"
t
logic "1"
RESET
RESET
logic "0"
t
Note 6: tSEN = Maximum Transient Duration. Please refer to figure on next page.
Note 7: Overdrive = VTH- -VDD. Please refer to figure on next page.
Copyright © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
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EM6353
Typical Operating Characteristics
(Typical values are at TA=+25°C unless otherwise noted, RESET or RESET open.)
7
300
VDD 3 . 3 V
6
250
5
[ uA ]
200
VDD 5 . 0 V
[ us ]
4
150
3
VDD 1. 5 V
2
100
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%
[ us ]
100%
250
Reset occurs
above this line
200
75%
150
50%
100
25%
50
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 © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
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EM6353
Package Information
D
E
SOT23-3L
C
A1 A2 A
B
L
H
e
SYMBOL
A
A1
A2
B
C
D
E
e
e1
H
L
e1
MIN
0.89
0.013
0.95
0.37
0.085
2.80
1.20
1.78
2.10
TYP MAX
1.04 1.12
0.10
0.97 1.00
0.51
0.12 0.18
2.95 3.04
1.32 1.40
0.95
1.90 2.05
2.40 2.64
0.55
Dimensions are in mm
SC70-5L
D
L
HE
E
PIN 1
e
e
b
Q1
A2
A
A1
c
SYMBOL
e
D
b
E
HE
Q1
A2
A1
A
c
L
MIN
MAX
0.65 BSC
1.80
2.20
0.15
0.30
1.15
1.35
1.80
2.40
0.10
0.40
0.80
1.00
0.00
0.10
0.80
1.10
0.10
0.18
0.10
0.30
NOTE:
#
All dimensions are in millimeters
#
Dimensions are inclusive of plating
#
Dimensions are exclusive of mold flash & metal burr
#
All specifications comply to EIAJ SC70
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 warranty for the use of its products, other than those expressly contained in the
Company's standard warranty which is detailed in EM's General Terms of Sale located on the Company's web site. EM assumes no
responsibility for any errors which may appear in 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 of EM are granted in connection with the sale of EM products, expressly or by implications. EM's products are not
authorized for use as components in life support devices or systems.
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 © 2006, EM Microelectronic-Marin SA
03/06 – rev.K
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