Datasheet Summary for Intersil X4043/X4045 CPU Supervisors
The Intersil X4043 and X4045 are integrated circuits that combine CPU supervisory functions with a 4-kilobit EEPROM, presenting a solution aimed at enhancing system reliability while reducing cost and space requirements. The datasheet provides technical specifications, features, block diagram, and ordering information of these devices.
Key Functions: Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Protection Serial EEPROM Memory.
Features:
– Selectable watchdog timer to prevent system freeze
– Low Vcc detection and reset assertion to protect against low voltage conditions
– Variable reset threshold voltages, including five preset and customizable settings
– Power-saving modes with near-zero standby current when the watchdog is off
– 4kbits of EEPROM with a 16-byte page write mode
Write Protection: Inbuilt mechanisms protect against accidental writes during power-up or power-down. Users can protect parts of the EEPROM array using Block Lock protection.
Interface: Serial 2-wire interface operating at up to 400kHz, suitable for 2.7V to 5.5V power supply operations.
Packages:
– 8 Ld SOIC
– 8 Ld MSOP
– 8 Ld PDIP
Pb-Free (lead-free) options are available for eco-friendly compliance.
The datasheet also includes a block diagram illustrating the internal structure and operational relationships of the key elements within the chip. This visual representation helps clarify how the integrated functionalities cooperate to provide robust CPU supervision.
Cautionary Note: Sensitivity to electrostatic discharge is highlighted, advising the proper handling of these components to avoid damage.
Ordering Information: Detailed part numbering is provided to specify the reset voltage level, temperature range, package type, and operation mode (active low or high reset signal).
Finally, the document includes legal disclaimers and trademark information, indicating the datasheet’s last revision date as March 16, 2006.
References:
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