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EM MICROELECTRONIC-MARIN SA
3-Pin Voltage Surveillance with Time-out
H6052
Features
n
Proper microprocessor restart after power up
Processor reset at power down
n
On-chip oscillator gives a typical POR of 160 ms
n
Reset output working down to 1.6 V
n
No external components required
n
Very small mounting space
n
TO-92 package
n
SOT-223 package
n
Sensitivity typically 10 sm
n
Description
The H6052 is a CMOS device which monitors the supply voltage
and controls the reset of the microprocessor. Upon the supply
voltage rising above V , the reset output, whether RES or
RES RES
, will remain active(RES = 1, = 0) for anadditional 160
ms. This allows the system voltage and the oscillator of the
microprocessor system to stabilize before the system becomes
fully active. When V drops below V , the reset output
goes active .
(RES = 1, = 0)RES
TH ON
DD TH OFF
Typical Operating Configuration
V
DD
or
controller
V
V
Micro-
SS
GND
V
DD
H6052
V
SS
RES
or
RES
RES
RES
Pin Assignment
TO-92
View
Flat Front
H6052
11223
DD
Fig. 1
Applications
All microprocessor and microcontroller applications where an
automatic restart of the micreoprocessor after power down is
required:
White goodsn
Brown goods
n
Automotive electronics
n
Industrial electronics
n
1
SOT223
V
V
DD
SS
RES
or
RES
V
DD
4
H6052
V
DD
V
SS
3
RES or
RES
Fig. 2
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H6052
Absolute Maximum Ratings
Parameter
Voltage at V to GND
Min. voltage at RES or
Max. voltage at RES or
Storage temperature range
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.
DD
RES
RES
Symbol Conditions
V
DD
V
min
V
max
T
STO
-0.3V to+7 V
GND - 0.3 V
V + 0.3 V
DD
OO
-65 to +150
Table 1
C
Electrical Characteristics
V = 5.0 V 10%, T = -40 to +85 C, unless otherwise specified
DD A
Parameter
Supply current
Supply voltage:
Power on threshold*
Power off threshold*
O
Symbol Test Conditions
I
DD
V
TH ON
V
TH OFF
RES or openRES
T = +25
A
T = +25
A
O
O
C 3.6
C
Handling Procedures
This device has built-in protection against high static voltages
or electric fields; however, anti-static precautions precautions
be taken as for any other CMOS component. Unless otherwise
specified, proper operation can only occur when all terminal
voltages are kept within the supply voltage range. Unused
inputs must always be tied to a defined logic voltage level.
Operating Conditions
Parameter Symbol Min. Typ. Max. Units
T
Operating temperature
Positive supply voltage
Min.
2.8*
-40
A
DD
1.6
V
Typ. Max.
80 140
4
3.2*
3.6*
4.4
+85OC
5.5
Table 2
Units
mA
V
V
V
RES Output High Level
RES Output Low Level
RES Output Low Level
RES Output Low Level
RES Output High Level
RES Output High Level
* V is related to V . Typically, V = V - 0.8 V
TH ON TH OFF TH OFF TH ON
V
OH
V
OL
V
OL
V
OL
V
OH
V
OH
I =2mA
OH
V = 3.5 V, I = 2mA
DD OL
V = 1.6 V, I = 400 A
DD OL
I =4mA
OL
V = 3.5 V, I = 1.5 mA
DD OH
V = 1.6 V, I = 80 A
DD OH
Timing Characteristics
V = 5.0 V 10%, T = -40 to +85 C, unless otherwise specified
DD A
Parameter
Power on reset
Power on reset
O
Symbol Test Conditions
t
t
POR
POR
T = +25 C
A
O
V - 0.4
DD
0.4
m
0.4
0.4
V - 0.4
DD
m
V - 0.4
DD
V
V
V
V
V
V
Table 3
Min.
70
100
Typ. Max.
350
250160
Units
ms
ms
Table 4
2
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Timing Waveforms
V
DD
1.6 V
Logic “1”
Logic “0”
Logic “1”
Logic “0”
t
POR
t
POR
V
V
TH ON
TH OF
t
t
t
H6052
F
RES
RES
Fig.3
Block Diagram
V
DD
Bandgap
Ref.
V
ss
Typical Applications
Power On Reset
V
DD
Comparator
OSC
V
DD
RES or RES
Reset
Control
Timer
Fig.4
GND
V
DD
RES
H6052V1
V
SS
RES
mP
V
DD
RES
mP
Fig. 5
GND
RES
H6052V2
V
SS
3
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Pin Description
TO-92
Pin
Name Function
V
1
DD
2
RES or
RES
V
3
SS
Positive Supply
Reset output (H6052V1)
output (H6052V2)Reset
Supply ground
Package and Ordering Information
Dimensions of SOT223 Package
max.
1.7
2.3
max.
0.02
6.7
3.15
max.
max.
1.05
max.
Table 5
0.35
max.
SOT223
Pin
Name Function
1
V
SS
2
V
DD
3
RES or
RES
NC No connection (pin 4 connected
4
16°
16°
7.3
max.
Supply ground
Positive Supply
Reset output (H6052V1)
output (H6052V2)Reset
internally to pin 2)
10°
H6052
Table 6
123
Dimensions of TO-92 Package
0.5 max.
1.5 max.
4
0.85
max.
max.
4.6
3.9 max.
4.9 max.
max.
3.7
4.9 max.
1.3 max.
3
2
1
15.5 max
0.5 max.
4
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Ordering Information
When ordering please specify the complete Part Number.
Part Number Output Type Package Delivery Form Package Marking
H6052V1TO3C TO-92 Bulk
H6052V1TO3E Reset active high TO-92 Ammopack H60521
H6052V1ST3B SOT223 Tape & Reel H60521
H6052V2TO3C TO-92 Bulk H60522
H6052V2TO3E Reset active low TO-92 Ammopack H60522
H6052V2ST3B SOT223 Tape & Reel H60522
H60521
H6052
EM Microelectronic-Marin SA cannot assume responsibility for use of any circuitry described other than circuitry entirely embodied in an
EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the circuitry and specifications without
notice at any time.You are stronglyurgedto ensure that the information given has not been superseded by a more up-to-date version.
Ó 2002 EM Microelectronic-Marin SA,03/02, Rev. I/425
EM MICROELECTRONIC-MARIN SA, CH-2074 Marin, Switzerland, Tel. +41 - (0)32 75 55 111, Fax +41 - (0)32 75 55 403
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