M62050P MITSUBISHI | Alldatasheet

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M62050P,FP MITSUBISHI<Dig./Ana.INTERFACE> ( / 4 ) 3V supply SYSTEM RESET with watchdog timer GENERAL DESCRIPTION M62050P/FP is a voltage threshold detector designed for detection of 3V supply voltage and generation of a system reset pulse. It is suitable for microcontroller systems. The IC, a supervisor of the MCU operations, dissipates low current of 0.6mA (typ) during normal operations of the MCU systems. It has 2 selectable threshold voltages, which allows applying it to a high precision system design.

FEATURES

  • Watchdog timer (supervisor for 2 system voltages)
  • Power-on reset timer
  • Low current consumption 0.6mA (typ) at Vcc = 3V
  • Wide supply voltage range Vcc = 7V (max) APPLICATION
  • Supervisor for microcontroller systems RECOMMENDED OPERATING CONDITION
  • Supply voltage range 2V ~ 4V 1995-12-6 BLOCK DIAGRAM PIN CONFIGURATION(TOP VIEW) OUTLINE 8P4(P) 8P2S-A(FP) M62050P,FPADJ RST2 Vcc GND ct1 RST1 WD TC F•F REFERENCE VOLTAGE CIRCUIT 1.24V 2 543 61 7 8 WD TC GND Vcc ADJRST2ct1RST1 W•D•T F•F F•F

M62050P,FP MITSUBISHI<Dig./Ana.INTERFACE> ( / 4 ) 3V supply SYSTEM RESET with watchdog timer Terminal functional description ABSOLUTE MAXIMUM RATING PIN No. symbol Terminal functional description W D T C GND ct1 Vcc ADJ RST2 RST1 Time set for reset timer and watchdog timer When abnormal signaling is input into WD terminal, it generates reset signal. GND Power supply When power supply voltage became abnormal, it generates reset signal. Input for watchdog timer VCC VIN VOUT IOUT Pd K O Topr Tstg Power supply voltage Input voltage Output voltage Output current Internal power dissipation Heat reduction rate Operating ambient temperature Storage temperature symbol Parameter Ratings Units 625 4.40 -20 ~ +75 -55 ~ +125 V V V mA mW mW/°C -0.3 ~ 5 Detection voltage adjustment for WD input Selection between 2 detection voltages

M62050P,FP MITSUBISHI<Dig./Ana.INTERFACE> ( / 4 ) 3V supply SYSTEM RESET with watchdog timer ELECTRICAL CHARACTERISTIC (Ta=25 °C, VCC=3V, unless otherwise noted) (1) DC characteristics (2) AC characteristics Symbol Parameter Terminal Measurement condition Ratings MIN TYP MAX Unit TWD tRST(1) tRST(2) tWDIN td1 td2 Watchdog timer Reset Timer(1) Reset Timer(2) Input pulse duration Propagation delay RST1 RST1 RST1 WD RST1 RST2 C=0.1µF,R1=10kΩ C=0.1µF,R1=10kΩ C=0.1µF,R1=10kΩ R 1=10kΩ 1.1CR1 0.5CR1 0.5 1.71.1 0.2 1.10.50 830C 40 22083 s ms s s ms µs µs µs µs VTH2(L) ΔVTH2 IWD VIH VIL IIN VTH3(H) VTH3(L) VOL Ileak VTH1(H) VTH2(H) RST1 RST2 ICC IOUT Symbol Parameter Terminal Measurement condition Ratings MIN TYP MAX Unit WD input current WD input voltage TC output current TC input current Watchdog timer threshold voltage Output voltage Output leakage current Vcc detection voltage(2) RST1 ON voltage RST2 ON voltage Circuit current WD TC WD TC TC RST1 RST2 VCC 2 RST1 RST2 VCC VIN=3V VIN=0.9V VOUT =2.5V IOUT =1mA VOUT =4V VCC =1.2V,RL=3kΩ VCC =1.2V,RL=3kΩ 0.15 0.80 mA V V µA mA V 2.50 -0.10 2.00 V1.00 V0.500.20 5.00 µA V V V 0.5 0.5 1.00.5 mA V V 0.06 0.25 1.5 3.00 -0.3 VCC 1Vcc detection voltage(1)VTH1(L) ΔTH1 2.382.252.13 2.302.202.10 0.080.050.03 2.682.552.43 2.602.502.40 0.080.050.03 ADJ Terminal=OPEN ADJ Terminal=Vcc ADJ Terminal=OPEN ADJ Terminal=Vcc V V V

M62050P,FP MITSUBISHI<Dig./Ana.INTERFACE> ( / 4 ) 3V supply SYSTEM RESET with watchdog timer Timing chart VTH2(H) VTH1 VTH3(H) VTH3(H) VTH2(L) VTH1 VCC TC VIN RST1 RST2 tRST(1) tWD tRST(2) Application circuitry example M62050 1 2 3 4 8 7 6 5 CLOCK RST1 (RESET) RST2 (HOLD) MCU/MPU VDD