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VOLTAGE DETECTING, SYSTEM RESETTING IC
GENERAL DESCRIPTION
The M62032FP is an IC for detection of two different input
voltages to reset almost all logic circuits including MCU.
It contains a delay circuit with which any delay time can be
obtained only by adding an external capacitor.
The IC is widely applicable to a battery check circuit, a level
detection circuit, a waveform shaping circuit, etc.
FEATURES
• A small number of external components
• Built-in 2 input voltage detection circuits
• Wide supply voltage range ............... 2 to 10V
• Small 8-pin package
• Open collector output
MITSUBISHI <STD-LINEAR>
M62032FP
PIN CONFIGURATION (TOP VIEW)
M62032FP
NC
1
2
3
4
VIN1 VRES
VIN2
GND
8
7
VCC
6
VO
EXTERNAL
5
CAPACITOR
APPLICATION
Reset circuit of MPU, MCU and logics
RECOMMENDED OPERATING CONDITION
Supply voltage range ......................... 2 to 10V
BLOCK DIAGRAM
VIN1
1
VCC
7
1.25V
Vcc
Vcc
Vcc
Outline 8P2S-A
NC: NO CONNECTION
6
VO
VIN2
VRES
EXTERNAL
5
CAPACITOR
2
1.25V
8
4
3
NC
GND
1
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FUNCTIONAL DIAGRAM
MITSUBISHI <STD-LINEAR>
M62032FP
VOLTAGE DETECTING, SYSTEM RESETTING IC
INPUT
VOLTAGE
1.25V
OUTPUT
H
L
INPUT 1
INPUT 2
TERMINAL DESCRIPTION
Td
INPUT 1
INPUT 2
INPUT 2 INPUT 1
INPUT 1
INPUT 2
t
Td
t
Terminal No.
1
2
3
4
5
6
7
8
Symbol
VIN1
VIN2
NC
GND Ground
EXTERNAL
CAPACITOR
Vo
Vcc
VRES
Detecting voltage input 1
Detecting voltage input 2
No connection
Delay capacitor connection
Output (open collector)
Supply voltage
It outputs "L" and "H" to the Vo terminal when VRES input is "H" and "L",
respectively.
Functional Description
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MITSUBISHI <STD-LINEAR>
VOLTAGE DETECTING, SYSTEM RESETTING IC
ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted)
Symbol Parameter Conditions UnitRatings
M62032FP
Vcc
ISINK
Vo
VRES
Pd
Ktheta
Topr
Tstg
Supply Voltage
Output Sink Current
Output Voltage
Self Reset Input Voltage
Power Dissipation
Thermal Derating
Operating Temperature
Storage Temperature
Ta ≥ 25°C
10
8.0
10
10
300
3.0
-20 to +75
-40 to +125
V
mA
V
V
mW
mW/°C
°C
°C
ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise noted)
<Reset circuit1>
Symbol Parameter Test Conditions Unit
VS1 Detecting Voltage 1
∆VS1
VIN
IIN VIN = 1.25V
IPD
VOL
Hysteresis Voltage 1
Input Voltage Range
Input Current
Constant Current
Low Output Voltage 1
VCC ≤ 7V
VCC > 7V -0.3
IOL = 5mA
Min Typ Max
1.20 1.25 1.30
-0.3 VCC
Delay Timetpd1 Cd = 0.01uF
* The delay time can be varied by changing the connecting capacitance (Cd).
Tpd = CV/I = Cd x 1(V)/1(uA) = Cd x 1E6 (sec)
**When delay time setting goes over 100msec, add a condenser for chattering protection (0.01uF) to the output.
<Reset circuit2>
Symbol Parameter Test conditions Unit
VS2
∆VS2
VIN
IIN
Detecting Voltage2
Hysteresis Voltage2
Input Voltage Range
Input Current
VCC ≤ 7V
VCC > 7V
VIN = 1.25V
Min Typ
1.20 1.25
-0.3
-0.3
Limits
9 15 23
7.0
100 500
0.2 0.4
10
680Cd = 0.68uFtpdmax Maximum Delay Time
Limits
1130
Max
1.30
9 15 23
VCC
7.0
100 500
V
mV
V
nA
uA-1
V
mS
V
mV
V
nA
Common specification
Symbol Parameter Test conditions
VCC
ICC
VS/∆T
∆VS/∆T
TPLH/∆T
IOH
TPHL
VOPL Threshold Operating Voltage
VRESH
IRESH
VRESL
Supply Voltage Range
Circuit Current in OFF
Detecting Voltage Temperature
Coefficient
The Hysteresis Voltage
Temperature Coefficient
Propagation Delay Time
Temperature Coefficient
Output Leak Current
Output "L" Propagation Delay Time
Self
reset
Input high voltage
Input high current
Input low voltage
VCC = 5V
CL = 100pF
RL = 2.2kΩ, VOL ≤ 0.4V
RL = 100kΩ, VOL ≤ 0.4V
VRES = 2V
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Limits
Min Typ
2
0.7
0.01
0.01
0.10
10
0.67 0.80
0.55 0.70
2
-0.3
Max
10
1.4
1
VCC
80
0.8
Unit
V
mA
%/°C
%/°C
%/°C
uA
µs
V
V
µA
V
1998.7.24- B
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VOLTAGE DETECTING, SYSTEM RESETTING IC
AN EXAMPLE OF THE APPLICATION CIRCUIT
MITSUBISHI <STD-LINEAR>
M62032FP
VCC
7
DETECTION
INPUT 1
1
DETECTION
INPUT 2
M62032FP
2
8
* A forced reset signal (high) into pin 8 from outside can reset this IC (low output) regardless of input
signals to pins 1 and 2.
4
EXTERNAL
CAPACITOR
6
5
RL
RESET(RESET)
MCU
0.01µF
Supply Voltage
GND
Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and more
!
reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may
lead to personal injury, fire or property damage. Remember to give due consideration to safety when making
your circuit design, in order to prevent fires from spreading, redundancy, malfunction or other mishap.
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