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MITSUBISHI
M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP
LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES
DESCRIPTION
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
Vcc Cd RESET INT GND
M62001L
4 3 2 1
Outline 5P5T(M62001L~8L)
FEATURES
* Bi-CMOS process realizes a configuration of low current dissipating circuits. Circuit current Icc=5A(Typ.,normal mode,Vcc=5.0V) Icc=1A(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.)
RESET Cd Vcc NC
1 2 3 4
8 7 6 5
INT GND NC NC
Outline 8P2S-A(M62001FP~8FP) NC:NO CONNECTION
M62001FP
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
1
GND(GROUND PIN)
4
Cd(PIN TO DELAY CAPACITANCE)
NOTE:This is an example showing pin Nos.of M62001L~8L.(See PIN CONFIGURATION.)
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MITSUBISHI
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=25C, unless otherwise noted,These ratings commonly apply to the M62001L/FP~M62008L/FP.)
Symbol Vcc ISINK Pd K Topr Tstg Parameter Supply voltage Output sink current Power dissipation Thermal derating Operating temperature Storage temperature (Ta25C) Conditions Ratings 8 5 440 4.4 -20 ~ +75 -40 ~ +125 Unit V mA mW mW/C
C C
ELECTRICAL CHARACTERISTICS (Ta=25C, unless otherwise noted,These ratings commonly apply to the M62001L/8L.)
Symbol Parameter Test conditions Interruption level during Vcc drop (Equivalent to VSL) (M62001,M62002, M62005,M62006) (M62003,M62004, M62007,M62008) Min. 4.30 4.05 2.00 Limits Typ. 4.45 4.25 2.15 100 5.0 1.0 0.2 Max. 4.60 V 4.45 2.30 20 4 0.4 V mV A V Unit
Vs
Supply voltage
VBATT Vs ICC Vsat1
Battery voltage Hysteresis voltage Circuit current Sink ability
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) Vcc=4V,Io=1mA (Output saturation voltage of P-ch transistor: [CMOS output] M62001,M62003, M62005,M62007) External capacitance Cd=0.33F Output pulse width (M62001,M62002, M62003,M62004) Time between Vcc(when falling)=VBATT and output of RESET signal Time between Vcc(when falling)=VS and output of INT signal
Vsat2 td tpw
Source ability Delay time Pulse width Reset output response time Interruption output reset time
0.2 50 7 30 100
0.4
V ms
10
S S S
tRESET tINT
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 Output form CMOS Open drain CMOS Open drain CMOS Open drain CMOS Open drain Interruption signal output mode
Pulse output
Hold output
MITSUBISHI ELECTRIC
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MITSUBISHI
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 8 6 4 2 0
1000 800 600 400 200 0
0
2
4
6
8
10
0
25
50
75
100
125
SUPPLY VOLTAGE Vcc(V) RESET OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
AMBIENT TEMPERATURE Ta(C) INTERRUPTION OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
5 4 3 2 1 0
5 4 3 2 1 0
0
1
2 VBATT 3
4
VSH
5
0
1
2
3
4VSL VSH5
SUPPLY VOLTAGE Vcc(V) DELAY CAPACITANCE vs. DELAY TIME
SUPPLY VOLTAGE Vcc(V) LIMIT OPERATING VOLTAGE (OPEN DRAIN TYPE)
10
2.0
1.5 1.0 1.0 0.1 0.5 RL=10k RL=100k RL=1M
0.01 1
0 10 100 1000 0 0.5 1.0 1.5
DELAY TIME td(msec) SUPPLY VOLTAGE Vcc(V)
2.0
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MITSUBISHI
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 6 5 4 3 2 1 0 -40 -20 0 20 Vcc=2V 40 60 80 100 Vcc=5V
2.20
2.15
2.10 Vcc=3V
2.05 -40 -20
0
20
40
60
80 100
AMBIENT TEMPERATURE Ta(C) DETECTION VOLTAGE vs. AMBIENT TEMPERATURE (DETECTION AT 4.45V TYPE)
AMBIENT TEMPERATURE Ta(C) INTERRUPTION OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
4.50
5 4
4.45 3 2 4.40 1 4.35 -40 -20 0
0
20
40
60
80 100
0
1
2
3
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 Vcc=4V
Vcc
0.5 Vcc=5
Vcc
4V
0.4 0.3 0.2 0.1 0
RES INT
0.4
RES Isink
V
V
Vsat Isource
GND
Vsat
0.3 0.2 0.1 0
GND
0
1
2
3
4
5
0
1
2
3
4
5
OUTPUT SINK CURRENT Isink(mA)
OUTPUT SOURCE CURRENT Isource(mA)
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MITSUBISHI
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 PRINCIPLE DESCRIPTION
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
3.RESET Output (Detection of 2.15V)
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. . td=1.52X10 5 XCd(sec) . 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.
BACKUP POWER SUPPLY
INT RESET M62001
INT RESET
MICROCOMPUTER SYSTEM
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
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.
RESET OUTPUT VOLTAGE VS. SUPPLY VOLTAGE
5 4 3 2 VBATT 1 0 2 3 VSH
2.INT output (Detection of 4.45V and 4.25V)
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) .
4
5
SUPPLY VOLTAGE Vcc
INT OUTPUT VOLTAGE VS. SUPPLY VOLTAGE
5 4 3 VSL 2 1 VSH
0 4.0
4.2
4.4
4.6
4.8
5.0
SUPPLY VOLTAGE Vcc(V)
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MITSUBISHI
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 VSH VSL VBATT
VSH VSL Vcc
GND
INT (HOLD OUTPUT TYPE) GND
UNCERTAIN AREA
INT (PULSE OUTPUT TYPE) GND
UNCERTAIN AREA PULSE WIDTH 7sec
RESET td GND 1 2 3 4 5 6 78 9 10 td
UNCERTAIN AREA
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.
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) SMOOTHING CAPACITOR + 100F
Vcc
VDD POWER SUPPLY PIN
INT (INTERRUPTION RESET SIGNAL)
BACKUP POWER SUPPLY VBATT(+3V)
+ -
INT
INT INTERRUPTION INPUT
+ DELAY CAPACITOR Cd 0.33F
RESET
RESET (COMPULSIVE RESET SIGNAL) M6200X OSCILLATOR
RESET RESET INPUT CLOCK OUTPUT MICROCOMPUTER SYSTEM
MICROCOMPUTER SYSTEM RESET IC
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