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X40420 - Dual Voltage Monitor

Description

The X40420/21 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary supervision, manual reset, and Block Lock™ protect serial EEPROM in one package.

This combination lowers system cost, reduces board space requirements, and increases reliability.

Features

  • Dual voltage detection and reset assertion.
  • Three standard reset threshold settings (4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V).
  • VTRIP2 Programmable down to 0.9V.
  • Adjust low voltage reset threshold voltages using special programming sequence.
  • Reset signal valid to VCC = 1V.
  • Monitor two voltages or detect power fail.
  • Battery Switch Backup.
  • VOUT: 5mA to 50mA from VCC; or 250µA from VBATT.
  • Fault detection register.
  • Selectab.

📥 Download Datasheet

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Other Datasheets by Intersil (Renesas)

Part Number Description
X40421 Dual Voltage Monitor
X40410 Dual Voltage Monitor
X40411 Dual Voltage Monitor
X40414 Dual Voltage Monitor
X40415 Dual Voltage Monitor

Full PDF Text Transcription

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® X40420, X40421 4kbit EEPROM Data Sheet March 28, 2005 FN8117.0 PRELIMINARY Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch FEATURES • Dual voltage detection and reset assertion —Three standard reset threshold settings (4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V) —VTRIP2 Programmable down to 0.9V —Adjust low voltage reset threshold voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor two voltages or detect power fail • Battery Switch Backup • VOUT: 5mA to 50mA from VCC; or 250µA from VBATT • Fault detection register • Selectable power-on reset timeout (0.05s, 0.2s, 0.4s, 0.8s) • Selectable watchdog timer interval (25ms, 200ms, 1.
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