X4643 - CPU Supervisor

Xicor

General Description

8K x 8 Bit

Key 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.

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X4643 cpu supervisor by Xicor - Datasheet Preview

Datasheet Details

Part number	X4643
Manufacturer	Xicor
File Size	431.20 KB
Description	CPU Supervisor
Datasheet	X4643 Datasheet

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Full PDF Text Transcription (Reference)

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Preliminary Information 64K X4643/5 CPU Supervisor with 64K EEPROM DESCRIPTION 8K x 8 Bit 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.