Intersil X5163, X5165 CPU Supervisor with 16Kbit SPI EEPROM

Category: Electronics, Intersil Corporation, Other Semiconductors

Overview of the Intersil X5163, X5165 CPU Supervisor with 16Kbit SPI EEPROM

The Intersil X5163 and X5165 devices are integrated circuits that combine multiple key functions vital for the stability and reliability of CPU systems. The device incorporates Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory. These functions are meant to lower overall system costs, minimize board space, and enhance system reliability.

Upon applying power, the integrated power-on reset circuit holds the RESET/RESET signal active to allow time for the power supply and oscillator to stabilize. The Watchdog Timer acts as an independent check on the microcontroller, signaling a reset if the timer is not restarted within a preselected timeframe. The device also monitors the supply voltage and asserts a reset if it drops below the minimum Vcc trip point, which is programmable to meet specific requirements.

Key Features

Programmable and selectable watchdog timer intervals.
Low Vcc detection and reset assertion.
Five preset standard reset threshold voltages, with reprogramming capabilities for custom settings.
Signal reset validation all the way down to Vcc + 1V.
Check for watchdog or low voltage-triggered resets via a volatile flag bit.
Energy efficient operation with variable standby and active current ratings based on watchdog usage.
16Kbits of EEPROM with built-in protections to prevent unintended writes.
Options to protect portions of the EEPROM array using Block Lock protection.
2MHz SPI interface with support for modes (0,0 & 1,1).
The capability to minimize EEPROM programming time & 32-byte page write mode.
5ms typical write cycle time for quick operations.
Dual voltage operation modes: 2.7V to 5.5V or 4.5V to 5.5V.
Available in 14-lead TSSOP and 8-lead SOIC package options.

Pin Configuration

The datasheet details the pinouts for both the 14-lead TSSOP and 8-lead SOIC/DIP packages, providing functions such as Chip Select Input (CSIWDI), Watchdog Input (WDI), Serial Output (SO), Write Protect (WP), Ground (Vss), Serial Input (SI), and Serial Clock (SCK). The RESET/RESET pin outputs an active reset signal ensuring successful power-on and low voltage resets.

Electrostatic Discharge Warning

The document cautions that these devices are sensitive to electrostatic discharge and recommends following proper IC handling procedures.

This summary focuses on encapsulating the essential information for potential users and developers who might be considering integrating the Intersil X5163 or X5165 CPU Supervisor with 16Kbit SPI EEPROM into their hardware solutions, highlighting its multifunctional capabilities and flexibility designed to improve computing systems’ safety and efficiency.