X5325VZAL Datasheet

CPU Supervisor with 32Kb SPI EEPROM


These devices combine four popular functions, Power-on Reset Control, Watchdog Timer, Supply Voltage Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability.

• Selectable watchdog timer
• Low VCC detection and reset assertion
   —Five standard reset threshold voltages
   —Re-program low VCC reset threshold voltage using special programming sequence
   —Reset signal valid to VCC = 1V
• Determine watchdog or low voltage reset with a volatile flag bit
• Long battery life with low power consumption
   —<50µA max standby current, watchdog on
   —<1µA max standby current, watchdog off
   —<400µA max active current during read
• 32Kbits of EEPROM
• Built-in inadvertent write protection
   —Power-up/power-down protection circuitry
   —Protect 0, 1/4, 1/2 or all of EEPROM array with Block Lock™ protection
   —In circuit programmable ROM mode
• 2MHz SPI interface modes (0,0 & 1,1)
• Minimize EEPROM programming time
   —32-byte page write mode
   —Self-timed write cycle
   —5ms write cycle time (typical)
• 2.7V to 5.5V and 4.5V to 5.5V power supply operation
• Available packages
   —14 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP
• Pb-free plus anneal available (RoHS compliant)




Manufacturer information


Intersil Corporation is a market leader in power management and precision analog technology for many of the most rigorous applications in the computing, consumer, and industrial markets. The company supplies a full range of power IC solutions including battery management, computing power, display power, regulators and controllers, and power modules; as well as precision analog components such as amplifiers and buffers, proximity and light sensors, data converters, timing products, optoelectronics and interface products. As a major supplier to the military and aerospace industries, Intersil’s product development methodologies reflect experience designing products to meet the highest standards for reliability and performance in challenging environments.

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