Applications
All microprocessor and microcontroller applications where an
automatic restart of the micreoprocessor after power down is
required:
White goods
n
Brown goods
Automotive electronics
Industrial electronics
n
n
n
1
Features
n
Very small mounting space
TO-92 package
Sensitivity typically 10 s
Proper microprocessor restart after power up
Processor reset at power down
On-chip oscillator gives a typical POR of 160 ms
Reset output working down to 1.6 V
No external components required
SOT-223 package
n
n
n
n
n
n
n
n
Description
The H6052 is a CMOS device whichmonitors the supply voltage
and controls the reset of the microprocessor. Upon the supply
voltage rising above V
, the reset output, whether RES or
, will remain active (RES = 1,
= 0) for an additional 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
.
TH ON
DD
TH OFF
RES
RES
(RES = 1,
= 0)
RES
3-Pin Voltage Surveillance with Time-out
Typical Operating Configuration
EM MICROELECTRONIC-MARIN SA
H6052
Handling Procedures
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.
2
Absolute Maximum Ratings
Table 1
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
T
A
-40
1.6
+85
O
C
V
5.5
V
DD
Table 2
Parameter
Symbol Min. Typ. Max. Units
Operating temperature
Positive supply voltage
Electrical Characteristics
V
= 5.0 V 10%, T = -40 to +85 C, unless otherwise specified
DD
A
O
I
DD
V
TH ON
V
TH OFF
V
OH
V
OL
V
OL
V
OL
V
OH
V
OH
RES or
open
RES
80
140
4.4
3.6*
0.4
0.4
4
3.2*
T = +25
A
O
C
3.6
2.8*
I
= 2 mA
OH
V
= 3.5 V, I = 2mA
DD
OL
V
= 1.6 V, I
= 400 A
DD
OL
I = 4 mA
OL
V
= 3.5 V, I
= 1.5 mA
DD
OH
V
= 1.6 V, I
= 80 A
DD
OH
Supply current
Power on threshold*
RES Output Low Level
RES Output Low Level
A
V
V
V
V
V
V
V
V
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply voltage:
Power off threshold*
T = +25
A
O
C
RES Output High Level
RES Output Low Level
RES Output High Level
RES Output High Level
V
- 0.4
DD
0.4
V
- 0.4
DD
V
- 0.4
DD
* V
is related to V
. Typically, V
= V
- 0.8 V
TH ON
TH OFF
TH OFF
TH ON
Table 3
Timing Characteristics
V
= 5.0 V 10%, T = -40 to +85 C, unless otherwise specified
DD
A
O
Table 4
t
POR
t
POR
T = +25 C
A
O
100
350
250
160
Power on reset
Power on reset
ms
ms
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
H6052
4
V
DD
V
SS
RES
H6052 1
RES
P
V
DD
V
SS
RES
H6052 2
RES
P
V
DD
GND
GND
V
DD
Fig. 5
Typical Applications
Power On Reset
Ordering Information
The H6052 is available in the following pacakges:
Part number:
Package;
H6052 1
TO-92
Reset Output
H6052 1
SOT-223
Reset Output
H6052 2
TO-92
Output
H6052 2
SOT-223
Output
When ordering please specify complete part number and
package.
Reset
Reset
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 strongly urged to ensure that the information given has not been superseded by a more up-to-date
2000 EM Microelectronic-Marin SA,10/00, Rev. H/328
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