M62009L MITSUBISHI | Alldatasheet

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( / 3 )ELECTRIC MITSUBISHI M62009L,P,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC WITH EXTERNAL INPUT

DESCRIPTION

As applications for microcomputers are increasing,a desire has arisen for a RAM backup function.Let us introduce Mitsubishi Electric new low power dissipation,high-performance system reset IC,which is suitable for such RAM backup. The M62009,which is a low power-dissipation 2-output microcomputer system reset IC,is a 2-output system reset IC which provides for RAM backup in microcomputers,and reduces power dissipation by using the Bi-CMOS process.The M62009 considerably reduces the number of components in the reset circuit. The M62009 performs two-stage detection of normal supply voltage and backup supply voltage required for backup mode.When the supply voltage is switched from normal supply voltage to back up supply voltage the interruption output,which is one of the two outputs,gives the interruption signal to a microcomputer,in this way,the microcomputer reduces power dissipation and enters in the backup mode. If the backup supply voltage goes lower than the voltage required for backup,the reset output(RESET output)which is different from the INT output gives the reset signal (forced reset) to the microcomputer.The interruption signal from the INT output recovers the microcomputer from the backup mode. To recover from reset, RESET output is canceled when the specified interval of time (delay time) elapses after the signal is given from the INT output.

FEATURES

  • Bi-CMOS process low power dissipation circuit configuration Icc=7µA(Typ.) (Normal mode Vcc1=Vcc2=5.0V) Icc=5µA(Typ.) (Backup mode Vcc1=5.0V) Icc=1µA(Typ.) (Backup mode Vcc1=2.5V)
  • Two supply detection Vcc1(RESET) Vcc1-1=4.0V(typ):Increase of Vcc1 Vs1-2=2.0V(typ):Decrease of Vcc1 Vcc2(INT) Free set up
  • Two outputs(open drain type) Reset output (RESET):Forced reset signal output Interruption output(INT):Output of the signal for interruption processing (output of the switching signal for backup mode) BLOCK DIAGRAM APPLICATION Prevention of errors in microcomputer system in electronic equipment that requires RAM backup,such as office,industrial,and home-use equipment. PIN CONFIGURATION (TOP VIEW) Outline 8P5(L) Outline 8P4(P) 8P2S-A(FP) NC:NO CONNECTION GND Cd RESET INT Vcc1 Vcc1 Cd RESET INT GND INT GND NC RESET Cd Vcc1 Vcc2 VI NC VI Vcc2
  • Packages 2 types 5-pin SIP (single in-line) 8-pin SOP (mini flat) Vcc2 VI DELAY CIRCUIT BIAS CIRCUIT Vs1-1 4.0V(TYP)DETECTION Vs1-2 2.0V(TYP)DETECTION Vs2 1.25V(TYP)

( / 3 )ELECTRIC MITSUBISHI M62009L,P,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC WITH EXTERNAL INPUT V mW /°C ELECTRICAL CHARACTERISTICS (Ta=25°C, unless otherwise noted) Symbol Test conditions Limits Unit Parameter Min. Typ. Max. ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted) Symbol Ratings Unit Supply voltage 8 Pd Topr Power dissipation -55 ~ +125 Output sink current Operating temperature Vcc Tstg Storage temperature -20 ~ +75 Vs 1-1 Detection voltage 3.8Increase of Vcc1 Parameter Conditions ISINK K Thermal derating (Ta≥25°C) 800(SIP)/625(DIP)/440(FP) mA mW 2.00 µAICC 4.0 4.2 V Vcc2=Detection voltage of hysteresis voltage (Detection voltage=4V set up) 8(SIP)/6.25(DIP)/4.4(FP) 1.25Reference voltage mV 5 20 ΔVs mS50 Hysteresis voltage Vs 1-2 Vs 2 ICC2-1 ICC2-2 td Vsat Detection voltage Circuit Current Circuit Current Circuit Current Delay time Output saturation voltage Decrease of Vcc1 Decrease of VI Vcc1=Vcc2=5V Vcc1=5V Vcc2=0V Vcc1=2.5V Vcc2=0V Cd=0.33µF VIN=5V Ic=4mA(NMOS) 1.85 2.15 1.20 1.30 7 30 0.2 0.4 4.5 V V V µA µA

( / 3 )ELECTRIC MITSUBISHI M62009L,P,FP MITSUBISHI<Dig.Ana.INTERFACE> LOW POWER 2 OUTPUT SYSTEM RESET IC WITH EXTERNAL INPUT TIMING CHART

1 Vcc2=VSH (Increase of Vcc2)INT output Low

2 Vcc2=VSL(Decrease of Vcc2)INT output High

3 Delay time obtained from Vs1-1.td=50msec(Cd=0.33µF):td=1.52X10 XCd(sec) RESET output:reset cancel(cancel)

4 Vcc1=VS1-2(Vcc1 Decrease)

RESET output:forced reset output(L reset) APPLICATION CIRCUIT EXAMPLE SUPPLY VOLTAGE 5.6V Vcc1 MICROCOMPUTER SYSTEM RESET IC INT RESET SMOOTHING CAPACITOR VDD MICROCOMPUTER Vcc2 INT RESET Vcc1 VSH VSL VSH VSL VSLVSH 43 3 4 1 1 12 2 2 td td Vs1-2 Vs1-1Vs1-2Vs1-1 DELAY CAPACITOR Cd BACKUP CAPACITOR Vcc2 VI RESET INT Cd