Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes

Automotive Serial EERAM Memory

Our serial EERAM is an innovative and low-cost SRAM product that includes a nonvolatile memory backup for use in automotive systems that need to preserve and quickly restore data after a loss of power. During any power disruption, the active SRAM array content is moved to the device’s nonvolatile bits. When power is restored, the nonvolatile content is automatically copied back to the SRAM array so that operation can continue. EERAM offers unlimited SRAM read and write cycles and more than 1,000,000 backups to the nonvolatile cells. As with all our automotive-grade memory devices, our automotive serial EERAM devices are AEC-Q100 qualified and ISO/TS16949 compliant to meet the rigorous quality, reliability and long product lifecycle requirements of automotive designers.

Key Benefits of Serial EERAM

  • Reliably preserves data through any power loss event
    • Automatically and safely stores data on power loss
    • Restores data automatically to SRAM on each power up
  • Nonvolatile memory backup (no battery needed)
  • Endurance > 1,000,000 backups
  • Data Retention > 100 years
  • Unlimited reads and writes to standard serial SRAM memory
  • Industry-standard I2C bus
  • Low power consumption
EERAM Block Diagram

How Can You Use EERAM in Your Automotive Application?

ApplicationEERAM Function
AirbagCollects and stores information every second for event data recorder (black box)
Telematics/NavigationStores user data like navigation waypoints, bookmarks and more for use right at ignition on
EntertainmentCaptures and holds changing station information so it is available at ignition on
Instrument ClusterTracks elapsed miles
Tire PressureTire pressure logs (data logger)
ABS/Stability ControlHolds data such as speed, turn radius and wheel rotation gathered from ABS sensors
PowertrainWrites data to memory in adaptive system that constantly manages the power

I2C Serial EERAM Products by Density


 
EERAM I²C PICtail™ Kit (AC500100)

EERAM I²C PICtail™ Kit

Part Number: AC500100
The EERAM I²C PICtail Kit demonstrates the features and abilities of the 47C04 and 47L16 I²C EERAM devices. This daughter board provides both PICtail Plus and mikroBUS™ connectors for easy use with the Explorer 8 Development Board, the Explorer 16/32 Development Board and many other tools.