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M62021 - SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP

General Description

The M62021 is a system IC that controls the memory backup function of SRAM and microcomputer (internal RAM).

Key Features

  • Built-in switch for selection between main power supply and backup power supply to RAM.
  • Small difference between input and output voltage (IOUT=80mA,VIN=5V)0.2V typ.
  • Detection voltage (power supply monitor voltage)4.40V±0.2V.
  • Chip select signal output(CS) Two channels of reset outputs(RES/RES).
  • Power on reset circuit built-in.
  • Delay time variable by an external capacitance connected to Ct pin.
  • Facilitates to form backup function with a fe.

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MITSUBISHI M62021L,P,FP SYSTEM RESET IC WITH SWITCH FOR MEMORY BACK-UP DESCRIPTION The M62021 is a system IC that controls the memory backup function of SRAM and microcomputer (internal RAM). The IC outputs reset signals(RES/RES) to a microcomputer at power-down and power failure.It also shifts the power supply to RAM from main to backup,outputs a signal (CS) that invokes standby mode,and alters RAM to backup circuit mode. The M62021 contains,in a single chip,power supply monitor and RAM backup functions needed for a microcomputer system,so that the IC makes it possible to construct a system easily and with fewer components compared with a conventional case that uses individual ICs and discrete components.