Mitsubishi M62005L Low power 2 output system reset ic sery Datasheet

MITSUBISHI<Dig.Ana.INTERFACE>
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
The M62001~8 are semiconductor integrated circuits whose
optimum use is for the detection of the rise and fall in the
power supply to a microcomputer system in order to reset or
release the microcomputer system.
The M62001~8 carry out voltage detection in 2 steps and
have 2 output pins.As Bi-CMOS process and low power
dissipating circuits are employed,they output optimum signals
through each output pin to a system that requires RAM
backup, As output signals,interruption(INT) and compulsive
reset(RESET) signals are available.The interruption
signal(INT) is used to alter the microcomputer from normal
mode to backup mode and vice versa. these output signals are
classified into pulse type(M62001~M62004) and hold type
(M62005~M62008).
PIN CONFIGURATION (TOP VIEW)
5
M62001L
DESCRIPTION
Cd
3
RESET
2
INT
1
GND
Outline 5P5T(M62001L~8L)
NC
1
2
3
4
M62001FP
RESET
Cd
Vcc
FEATURES
• Bi-CMOS process realizes a configuration of low current
dissipating circuits.
Circuit current
Icc=5µA(Typ.,normal mode,Vcc=5.0V)
Icc=1µA(Typ.,backup mode,Vcc=2.5V)
•Two-step detection of supply voltage
Detection voltage in normal mode (2 types)
Vs=4.45V/4.25V(Typ.)
Detection voltage in backup mode
VBATT=2.15V(Typ.)
•Two outputs
Reset output (RESET):Output of compulsive reset signal
Interruption output(INT):Output of interruption signal
•Two types of output forms:CMOS and open drain
•Two types of interruption output (INT) signals
Pulse type
(M62001~M62004)
Hold type
(M62005~M62008)
•Two types of outline packages
5-pin plastic SIP (single in-line package)
8-pin plastic SOP (mini flat package)
•Output based on RAM backup mode (See the timing chart.)
Vcc
4
8
INT
7
GND
6
NC
5
NC
Outline 8P2S-A(M62001FP~8FP)
NC:NO CONNECTION
APPLICATION
Prevention of malfunction of microcomputer systems in
electronic,equipment such as OA equipment, industrial
equipment,and home-use electronic appliances.
BLOCK DIAGRAM
Vcc
5
+
-
INTERRUPTION SIGNAL
GENERATION BLOCK
2
INT
+
-
RESET SIGNAL
GENERATION BLOCK
3
RESET
4
1
GND(GROUND PIN)
Cd(PIN TO DELAY CAPACITANCE)
NOTE:This is an example showing pin Nos.of M62001L~8L.(See PIN CONFIGURATION.)
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MITSUBISHI<Dig.Ana.INTERFACE>
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C, unless otherwise noted,These ratings commonly apply to the M62001L/FP~M62008L/FP.)
Symbol
Vcc
ISINK
Pd
K
Topr
Tstg
Power dissipation
Thermal derating
Operating temperature
Storage temperature
Ratings
8
Conditions
Parameter
Supply voltage
Output sink current
Unit
V
mA
mW
mW/°C
5
440
4.4
(Ta≥25°C)
-20 ~ +75
°C
°C
-40 ~ +125
ELECTRICAL CHARACTERISTICS
(Ta=25°C, unless otherwise noted,These ratings commonly apply to the M62001L/8L.)
Symbol
Vs
VBATT
Parameter
Supply voltage
∆Vs
Battery voltage
Hysteresis voltage
ICC
Circuit current
Vsat1
Sink ability
Vsat2
Source ability
td
Delay time
Min.
Limits
Typ.
Max.
(M62001,M62002,
M62005,M62006)
4.30
4.45
4.60
(M62003,M62004,
M62007,M62008)
4.05
4.25
4.45
2.00
2.15
100
5.0
1.0
2.30
20
4
µA
0.2
0.4
V
0.2
0.4
V
Test conditions
Interruption level
during Vcc drop
(Equivalent to VSL)
Reset level at backup
∆Vs=VSH-VSL
Vcc=5.0V:In normal mode
Vcc=2.5V:In backup mode
Vcc=4V,Io=4mA
(Output saturation voltage of N-ch transistor)
V
Vcc=4V,Io=1mA
(Output saturation voltage of P-ch transistor:
[CMOS output] M62001,M62003,
M62005,M62007)
External capacitance Cd=0.33µF
Output pulse width (M62001,M62002,
M62003,M62004)
tpw
Pulse width
tRESET
Reset output response time
tINT
Interruption output reset time
Unit
Time between Vcc(when falling)=VBATT and
output of RESET signal
Time between Vcc(when falling)=VS and
output of INT signal
ms
50
7
V
mV
10
µS
30
µS
100
µS
SUMMARY OF M62001L/FP~M62008L/FP
Type
M62001
M62002
M62003
M62004
M62005
M62006
M62007
M62008
Supply voltage detection level Vs(V) Battery voltage detection level VBATT(V)
4.45
4.25
2.15
4.45
4.25
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Output form
Interruption signal output mode
CMOS
Open drain
CMOS
Open drain
CMOS
Open drain
CMOS
Open drain
Pulse output
Hold output
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MITSUBISHI<Dig.Ana.INTERFACE>
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
TYPICAL CHARACTERISTICS
CIRCUIT CURRENT vs.
SUPPLY VOLTAGE
THERMAL DERATING
(MAXIMUM RATING)
10
1000
8
800
6
600
4
400
2
200
0
0
2
4
6
8
0
10
0
SUPPLY VOLTAGE Vcc(V)
75
100
125
INTERRUPTION OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
5
4
4
3
3
2
2
1
1
0
50
AMBIENT TEMPERATURE Ta(°C)
RESET OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
5
25
0
1
2 VBATT 3
4
VSH
0
5
0
1
3
2
4VSL VSH5
SUPPLY VOLTAGE Vcc(V)
SUPPLY VOLTAGE Vcc(V)
DELAY CAPACITANCE vs. DELAY TIME
LIMIT OPERATING VOLTAGE
(OPEN DRAIN TYPE)
2.0
10
1.5
1.0
1.0
RL=10kΩ
RL=100kΩ
0.1
0.5
0.01
1
RL=1MΩ
0
10
100
0
1000
0.5
1.0
1.5
2.0
SUPPLY VOLTAGE Vcc(V)
DELAY TIME td(msec)
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M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
CIRCUIT CURRENT vs.
AMBIENT TEMPERATURE
DETECTION VOLTAGE vs.
AMBIENT TEMPERATURE
7
2.20
6
5
Vcc=5V
2.15
4
3
2.10
2
Vcc=3V
1
0
-40 -20
0
20
Vcc=2V
40 60
2.05
-40 -20
80 100
AMBIENT TEMPERATURE Ta(°C)
20
40
60
80 100
AMBIENT TEMPERATURE Ta(°C)
DETECTION VOLTAGE vs.
AMBIENT TEMPERATURE
(DETECTION AT 4.45V TYPE)
4.50
0
INTERRUPTION OUTPUT VOLTAGE vs.
SUPPLY VOLTAGE
5
4
4.45
3
2
4.40
1
4.35
-40 -20
0
20
40
60
0
80 100
0
1
3
2
4
5
AMBIENT TEMPERATURE Ta(°C)
SUPPLY VOLTAGE Vcc(V)
Nch OUTPUT SATURATION VOLTAGE vs.
OUTPUT SINK CURRENT
Pch OUTPUT SATURATION VOLTAGE vs.
OUTPUT SOURCE CURRENT
0.5
0.5
Vcc=5
Vcc=4V
Vcc
0.4
Vcc
0.4
RES
INT
V
Vsat
0.2
0.1
0.1
0
1
2
3
4
0
5
OUTPUT SINK CURRENT Isink(mA)
Isource
GND
0.3
0.2
0
4V
Vsat
RES
Isink
GND
0.3
V
0
1
2
3
4
5
OUTPUT SOURCE CURRENT Isource(mA)
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MITSUBISHI<Dig.Ana.INTERFACE>
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
3.RESET Output (Detection of 2.15V)
OPERATION PRINCIPLE
DESCRIPTION
The RESET outputs a signal to prevent the microcomputer from
malfunctioning due to a drop in supply voltage.
When powering up,RESET is kept at low level until the supply
voltage reaches VSH.If the supply voltage rises to VSH,RESET
is set to high level.By inserting a capacitor between the Cd pin
and GND,it is possible to produce a desired delay time (td).To
set a delay time,equation below is used.
.
5
td=1.52X10
XCd(sec)
.
In general,the memory backup function of
a microcomputer,as shown in figure,uses two diodes to switch
between main power supply and backup power supply.The
M62001~M62008 are ICs that,in such memory backup
operation,monitor in 2 steps each voltage on the VDD line.
VDD
Vcc
MAIN POWER
SUPPLY
BACKUP
POWER
SUPPLY
INT
RESET
INT
RESET
M62001
MICROCOMPUTER
SYSTEM
Once the supply voltage has exceeded VSH and the RESET
output is set to high level,RESET maintains the high level until
the supply voltage drops to VBATT.When the supply voltage
drops to VBATT,RESET goes low thereby resetting and
initializing the microcomputer.
The RESET output has a large hysteresis voltage of
approximately 2V between the rise in supply voltage at powerup and its fall.
The ICs have an intelligent sequence such as substantial
hysteresis action of RESET toward normal state at restoration of
supply voltage,as well as 2-step detection in low power
dissipation mode.
OPERATION IN DETAIL
1.Two Step Detection
RESET OUTPUT VOLTAGE VS.
SUPPLY VOLTAGE
5
The ICs perform 2-step detection of supply voltage and have 2
output pins (INT and RESET).Although they have 2 comparators
for 2-step detection,they differ significantly from such that are
simply provided with independent detectors,because the RESET
output signal is dependent at power-up and the like upon the
INT output signal.
2.INT output (Detection of 4.45V and 4.25V)
4
3
2
The INT output at the power-up of supply voltage detects VSH
(4.45V/4.25V)to inform the microcomputer system of the fact
that the supply voltage has reached its normal level.When the
supply voltage drops from its normal level to
VSL(4.45V/4.25V)an interruption signal is output to alter the
microcomputer system into RAM backup mode. The
microcomputer at this point enters sleep state and secures
memory by a stop command issued by the interruption
signal.These detection voltage ,VSH the rise,and VSL the fall,of
supply voltage,have a 100-mV hysteresis voltage between
themselves.
.
VSH-VSL=100(mV)
.
VSH
VBATT
1
0
2
3
5
4
SUPPLY VOLTAGE Vcc
INT OUTPUT VOLTAGE VS.
SUPPLY VOLTAGE
5
4
3
VSL
VSH
2
1
0
4.0
4.2
4.4
4.6
4.8
5.0
SUPPLY VOLTAGE Vcc(V)
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MITSUBISHI<Dig.Ana.INTERFACE>
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/
M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
OPERATION DESCRIPTION
VSH
VSL
VSH
VSL VBATT
VSL VBATT
VSH
VSH
VSL
Vcc
GND
INT
(HOLD OUTPUT TYPE)
UNCERTAIN AREA
GND
UNCERTAIN AREA
INT
(PULSE OUTPUT TYPE)
PULSE WIDTH
7µsec
GND
UNCERTAIN AREA
RESET
td
td
GND
1
4
3
2
5
6
1 If Vcc rises to VSH(4.55V/4.35V),the INT output it set to
high level.
*1.A pulse is output if INT is of pulse output type.
2 RESET goes high td(s) after VSH
*td=1.52X105XC(sec)
3 If Vcc drops to VSH(4.55V/4.25V),INT goes low.
*1.A pulse is output if INT is of pulse output type.
*2.The RESET output continues to be held high.
4 If Vcc returns to VSH,the INT output is set to high level.
7 8
9
10
5 Same as 3 .
6 If Vcc becomes lower than VBATT(2.15V),the RESET
output is set to low thereby resetting the microcomputer
and initializing system.
7 Same as 1 .
8 Same as 2 .
9 Same as 3 and 5 .
10 Same as 6 .
APPLICATION EXAMPLE
POWER SUPPLY
Vcc(+5V)
BACKUP POWER
SUPPLY
VBATT(+3V)
VDD
POWER SUPPLY PIN
Vcc
SMOOTHING
CAPACITOR +
100µF
DELAY CAPACITOR
+
-
INT
+
-
RESET
INT
(INTERRUPTION
RESET SIGNAL)
RESET
(COMPULSIVE
RESET SIGNAL)
Cd
0.33µF
M6200X
OSCILLATOR
MICROCOMPUTER
SYSTEM RESET IC
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INT
INTERRUPTION INPUT
RESET
RESET INPUT
CLOCK OUTPUT
MICROCOMPUTER
SYSTEM
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