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X4645 - CPU Supervisor

Download the X4645 datasheet PDF. This datasheet also covers the X4643 variant, as both devices belong to the same cpu supervisor family and are provided as variant models within a single manufacturer datasheet.

Description

The X4643/5 combines four popular functions, Poweron Reset Control, Watchdog Timer, Supply Voltage Supervision, and Serial EEPROM Memory in one package.

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

Features

  • Selectable watchdog timer.
  • Low VCC detection and reset assertion.
  • Four standard reset threshold voltages.
  • Adjust low VCC reset threshold voltage using special programming sequence.
  • Reset signal valid to VCC = 1V.
  • Low power CMOS.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (X4643_Intersil.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
X4645 CPU Supervisor Xicor
X46402 Dual Voltage CPU Supervisor with 64K Password Protected EEPROM Xicor
X4643 CPU Supervisor Xicor

Other Datasheets by Intersil (Renesas)

Part Number Description
X4643 CPU Supervisor

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
® X4643, X4645 64K, 8K x 8 Bit Data Sheet March 29, 2005 FN8123.0 CPU Supervisor with 64K EEPROM FEATURES • Selectable watchdog timer • Low VCC detection and reset assertion —Four standard reset threshold voltages —Adjust low VCC reset threshold voltage using special programming sequence —Reset signal valid to VCC = 1V • Low power CMOS —<20µA max standby current, watchdog on —<1µA standby current, watchdog off —3mA active current • 64Kbits of EEPROM —64-byte page write mode —Self-timed write cycle —5ms write cycle time (typical) • Built-in inadvertent write protection —Power-up/power-down protection circuitry • 400kHz 2-wire interface • 2.7V to 5.
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