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.) MITSUBISHI ELECTRIC ( 1 / 6 ) 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 MITSUBISHI ELECTRIC Output form Interruption signal output mode CMOS Open drain CMOS Open drain CMOS Open drain CMOS Open drain Pulse output Hold output ( 2 / 6 ) 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) MITSUBISHI ELECTRIC ( 3 / 6 ) 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 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) MITSUBISHI ELECTRIC ( 4 / 6 ) 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) MITSUBISHI ELECTRIC ( 5 / 6 ) 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 MITSUBISHI ELECTRIC INT INTERRUPTION INPUT RESET RESET INPUT CLOCK OUTPUT MICROCOMPUTER SYSTEM ( 6 / 6 )