M62001L MITSUBISHI | Alldatasheet

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( / 6 )ELECTRIC MITSUBISHI M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP MITSUBISHI<Dig.Ana.INTERFACE> 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).

FEATURES

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.) BLOCK DIAGRAM APPLICATION Prevention of malfunction of microcomputer systems in electronic,equipment such as OA equipment, industrial equipment,and home-use electronic appliances. PIN CONFIGURATION (TOP VIEW) Outline 5P5T(M62001L~8L) Outline 8P2S-A(M62001FP~8FP) NC:NO CONNECTION INTERRUPTION SIGNAL GENERATION BLOCK RESET SIGNAL GENERATION BLOCK GND(GROUND PIN) Cd(PIN TO DELAY CAPACITANCE) RESET INT Vcc NOTE:This is an example showing pin Nos.of M62001L~8L.(See PIN CONFIGURATION.) Vcc Cd RESET INT GND INT GND NC NC RESET Cd Vcc NC Bi-CMOS process realizes a configuration of low current dissipating circuits. M62001LM62001FP

( / 6 )ELECTRIC MITSUBISHI M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES V mW /°C

ELECTRICAL CHARACTERISTICS

(Ta=25°C, unless otherwise noted,These ratings commonly apply to the M62001L/8L.) Symbol Test conditions Limits Unit Parameter Min. Typ. Max. 4.45 ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted,These ratings commonly apply to the M62001L/FP~M62008L/FP.) Symbol Ratings Unit Supply voltage 8 Pd Topr Power dissipation -40 ~ +125 V Output sink current Operating temperature Vcc Tstg Storage temperature -20 ~ +75 4.4 VBATT Battery voltage 4.30 Supply voltage 2.00 4.60 Reset level at backup Parameter Conditions ISINK K Thermal derating (Ta≥25°C) 440 mA mW mV100 0.4 µAICC Circuit current Vsat1 Sink ability 0.2 1.0 5.0 20 Vcc=5.0V:In normal mode Vcc=4V,Io=4mA (Output saturation voltage of N-ch transistor) Vs Interruption level during Vcc drop (Equivalent to VSL) (M62001,M62002, M62005,M62006) (M62003,M62004, M62007,M62008) 4.254.05 4.45 2.15 2.30 V ΔVs Hysteresis voltage ΔVs=V SH -VSL Vcc=2.5V:In backup mode Vsat2 Source ability Vcc=4V,Io=1mA (Output saturation voltage of P-ch transistor: [CMOS output] M62001,M62003, M62005,M62007) 0.40.2 V V td Delay time Output pulse width (M62001,M62002, M62003,M62004) 50 ms tpw tRESET tINT Pulse width Reset output response time Interruption output reset time External capacitance Cd=0.33µF Time between Vcc(when falling)=VBATT and output of RESET signal Time between Vcc(when falling)=VS and output of INT signal 100 µS µS µS SUMMARY OF M62001L/FP~M62008L/FP Type Output form Interruption signal output mode CMOS Open drain Supply voltage detection level Vs(V) Battery voltage detection level VBATT(V) M62001 M62002 M62003 M62004 M62005 M62006 M62007 M62008 4.45 4.25 4.45 4.25 2.15 CMOS Open drain CMOS Open drain CMOS Open drain Pulse output Hold output

( / 6 )ELECTRIC MITSUBISHI M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES CIRCUIT CURRENT vs. SUPPLY VOLTAGE 0 2 4 6 8 10 SUPPLY VOLTAGE Vcc(V) TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RATING) 200 400 600 800 0 25 50 75 100 125 AMBIENT TEMPERATURE Ta(°C) 1000 RESET OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 0 1 2 3 4 5 SUPPLY VOLTAGE Vcc(V) INTERRUPTION OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 0 1 2 3 4 SUPPLY VOLTAGE Vcc(V) DELAY CAPACITANCE vs. DELAY TIME 0.01 0.1 1.0 1 10 100 1000 DELAY TIME td(msec) LIMIT OPERATING VOLTAGE (OPEN DRAIN TYPE) 0.5 1.0 1.5 0 0.5 1.0 1.5 2.0 SUPPLY VOLTAGE Vcc(V) 2.0 5VBATT VSH VSHVSL R L=10kΩ R L=100kΩ R L=1M Ω

( / 6 )ELECTRIC MITSUBISHI M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES CIRCUIT CURRENT vs. AMBIENT TEMPERATURE -40 -20 0 20 AMBIENT TEMPERATURE Ta(°C) DETECTION VOLTAGE vs. AMBIENT TEMPERATURE 2.05 2.10 AMBIENT TEMPERATURE Ta(°C) AMBIENT TEMPERATURE Ta(°C) INTERRUPTION OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 0 1 2 3 4 SUPPLY VOLTAGE Vcc(V) Nch OUTPUT SATURATION VOLTAGE vs. OUTPUT SINK CURRENT 0.1 0.2 0.3 0.4 0 1 2 3 4 OUTPUT SINK CURRENT Isink(mA) 0.5 Pch OUTPUT SATURATION VOLTAGE vs. OUTPUT SOURCE CURRENT 0 1 2 3 4 OUTPUT SOURCE CURRENT Isource(mA) 40 60 80 100 -40 -20 0 20 40 60 80 100 2.15 2.20 DETECTION VOLTAGE vs. AMBIENT TEMPERATURE (DETECTION AT 4.45V TYPE) 4.35 4.40 -40 -20 0 20 40 60 80 100 4.45 4.50 0.1 0.2 0.3 0.4 0.5 Vcc=5V Vcc=2V Vcc=3V Vcc=5 4V Vcc RES GND V Vsat Isource Vcc=4V Vcc RES GND V VsatIsink INT

( / 6 )ELECTRIC MITSUBISHI M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES OPERATION PRINCIPLE 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 INT RESET INT RESET MAIN POWER SUPPLY BACKUP POWER SUPPLY M62001 Vcc 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. 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).. INT OUTPUT VOLTAGE VS. SUPPLY VOLTAGE SUPPLY VOLTAGE Vcc(V) VSL VSH 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 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 power- up and its fall. 2 3 4 5 VSHVBATT SUPPLY VOLTAGE Vcc RESET OUTPUT VOLTAGE VS. SUPPLY VOLTAGE

( / 6 )ELECTRIC MITSUBISHI M62001L,FP/M62002L,FP/M62003L,FP/M62004L,FP/ M62005L,FP/M62006L,FP/M62007L,FP/M62008L,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC SERIES OPERATION DESCRIPTION 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. APPLICATION EXAMPLE 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 . POWER SUPPLY Vcc(+5V) BACKUP POWER SUPPLY VBATT (+3V) Vcc MICROCOMPUTER SYSTEM RESET IC INT INTERRUPTION INPUT RESET RESET INPUT INT RESET SMOOTHING CAPACITOR 100µF DELAY CAPACITOR Cd 0.33µF OSCILLATOR (COMPULSIVE RESET SIGNAL) (INTERRUPTION RESET SIGNAL) INT RESET M6200X VDD POWER SUPPLY PIN CLOCK OUTPUT MICROCOMPUTER SYSTEM GND GND GND GND VSH VSL VSH VSL VSH VSL VBATT VSH VSL VBATT Vcc INT (HOLD OUTPUT TYPE) INT (PULSE OUTPUT TYPE) RESET td PULSE WIDTH 7µsec td UNCERTAIN AREA UNCERTAIN AREA UNCERTAIN AREA 1 2 3 4 5 6 7 8 9 10 10 Same as 6 .