Applications
All microprocessor applications where an automatic restart is
required:
n Computer electronics
White / Brown goods
Automotive electronics
Industrial electronics
n
n
n
n Telecom systems
n Hand-held systems
1
Features
n Clear microprocessor restart after power up
Low power consumption: typ. 3
m
A at V = 5 V
DD
- 40 to +85
temperature range
O
On request extended temperature range, -40 to +125 C
On-chip oscillator
No external components required
Push-pull or Open drain output
n Processor reset at power down
n Reset output guaranteed down to V = 1 V
DD
n
O
n
C
n
n
n
n
n TO-92 package
n Pin compatible with MC 33164
Description
The V6320 is a CMOS device which monitors the supply voltage
of any electronic system, and generates the appropriate Reset
signal. The thres hold defines the minimum allowed voltage
which guarantees the good functionality of the system. As long
as V stays upside this voltage level, the output stays inactive.
DD
If V drops below V , the output gets active. When V
rises
DD
TH
DD
above V , the output remains active for an additional 50 ms
TH
(typ.). This al lows the system to stabilize before getting fully
active. The threshold v oltage may be obtained in differ ent
versions: 2.0 V, 2.4 V, 2.8 V, 3.5 V, 4.0 V, 4.5 V.
Ultra Low Power 3-Pin Voltage Surveillance
with Time-out
Pin Assignment
V
DD
V
SS
1
2
3
RES
or
RES
V6320
View
Flat Front
TO-92
Fig. 2
Typical Operating Configuration
Fig. 1
V
DD
V
DD
V
SS
RES
or
RES
V6320
GND
Micro-
processor
V
DD
V
SS
RES
or
RES
For Open drain version:
EM MICROELECTRONIC-MARIN SA
V6320
R
2
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.
Absolute Maximum Ratings
Table 1
Parameter
Voltage at V
to V
DD
SS
Min. voltage at RES or RES
Max. voltage at RES or RES
Storage temperature range
V
DD
V
min
V
max
T
STO
-0.3V to+10 V
V
- 0.3 V
SS
-65 to +150
O O
C
V
+ 0.3 V
DD
Symbol
Conditions
Handling Procedures
1)
The maximum operating temperature is confirmed by
sampling at initial device qualification.
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 supply voltage range.
Operating Conditions
T
A
-40
1
+125
O
C
V
8
V
DD
Table 2
Parameter
Symbol Min. Typ . Max. Units
1)
Operating temperature
Positive supply voltage
Electrical Characteristics
O
T = -40 to +85 C, unless otherwise specified
A
I
DD
V
TH
V
TH
V
HYS
V
OL
V
OL
V
OL
V
OH
V
OH
I
LEAK
V = 2 V
DD
V = 5 V, I = 8 mA
DD
OL
V = 8 V
DD
1)
Supply current
Threshold voltage
Threshold hysteresis
RES Output Low Level
RES Output High Level
2)
Output leakage current
m
A
m
A
m
A
V
V
V
V
V
V
mV
mV
mV
mV
V
V
mV
m
A
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
I
DD
V = 5 V
DD
V = 8 V
DD
Version: A,G,M
Version: B,H,N
Version: C,I,O
Version: D,J,P
Version: E,K,Q
Version: F,L,R
I
DD
V
TH
V
TH
Max.
at 25
O
C
Min.
at 25
O
C
V
TH
V
TH
V
OH
V = 3 V, I = 4 mA
OL
DD
V = 1 V, I = 50
m
A
OL
DD
V = 5 V, I = -8 mA
DD
OH
V = 3 V, I = -4 mA
DD
OH
V = 1 V, I = -100
m
A
OH
DD
1.77
2.09
2.48
3.11
3.55
4.05
4.3
2.3
850
1.84
2.18
2.59
3.23
3.70
4.22
1.5
3.0
5.2
1.95
2.32
2.73
3.42
3.88
4.42
25
175
140
20
4.5
2.6
950
0.05
2.1
3.9
6.8
2.04
2.41
2.86
3.59
4.08
4.67
3.1
5.7
10.0
2.17
2.55
3.03
3.80
4.32
4.95
400
300
90
1
1)
RES or RES open
2)
Only for Open drain versions
Table 3
Timing Characteristics
O
V = 5.0 V, T = -40 to +85 C, unless otherwise specified
DD
A
t
POR
t
SEN
for V = 5 V to 3 V in 5
m
s
DD
25
20
22
Power on reset time
3)
Sensitivity
ms
m
s
m
s
Table 4
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Units
3)
Reaction time
t
R
3)
Tested on versions with V higher than 3 V
TH
for V = 5 V to 3 V in 5
m
s
DD
50
0.8 t
R
75
75
150
V6320
R
3
Pin Description
TO-92
Table 5
Pin
1
2
3
V
DD
RES or RES
V
SS
Positive Supply
Reset output
Supply ground
Name
Function
Block Diagram
Fig.4
RES or RES
V
DD
V
ss
Voltage
Reference
-
+
Reset
Logic
Oscillator
Timer
Timing Waveforms
t
SEN
t
POR
t
R
t
POR
Fig.3
RES
RES
t
t
t
V
DD
V
TH
1 V
Logic "1"
Logic "0"
Logic "0"
Logic "1"
V6320
R
4
Ordering Information
The V6320 is available with Push-pull or Open drain output
stage and Reset active low or high.
Ordering form: V6320 <version letter> < packaging>
Example: Smart reset with: - Reset active low
- Open drain output
- 4.5 V threshold
- TO-92 package
V6320 R TO-92
When ordering, please specify the complete part number.
Version letter definition
Non-stock items, minimum order 30 K pieces.
1)
Output stage
Threshold Voltage [V]
2.0 2.4 2.8 3.5 4.0 4.5
Push-pull, Reset active low A B C D E F
1)
1)
1)
1)
1)
1)
Push-pull, Reset active high G H I J K L
1)
1)
1)
1)
1)
1)
Open drain, Reset active low M N O P Q R
1)
1)
1)
1)
Table 6
Chip form on request
V6320
R
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. D/318
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