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X40021 - Dual Voltage Monitor

Download the X40021 datasheet PDF. This datasheet also covers the X40020 variant, as both devices belong to the same dual voltage monitor family and are provided as variant models within a single manufacturer datasheet.

General Description

The X40020 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary supervision, and manual reset, in one package.

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

Key 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; 250µA from VBATT.
  • Fault detection register.
  • Selectable.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (X40020_IntersilCorporation.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
X40010 Dual Voltage Monitor with Integrated CPU Supervisor Xicor
X40010 Dual Voltage Monitor Renesas
X40011 Dual Voltage Monitor with Integrated CPU Supervisor Xicor
X40011 Dual Voltage Monitor Renesas
X40014 Dual Voltage Monitor with Integrated CPU Supervisor Xicor

Other Datasheets by Intersil (now Renesas)

Part Number Description
X40020 Dual Voltage Monitor
X4003 CPU Supervisor
X40030 Triple Voltage Monitor
X40031 Triple Voltage Monitor
X40034 Triple Voltage Monitor

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
® X40020, X40021 Data Sheet May 17, 2006 FN8112.1 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; 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.