Description
The Hitachi HM5117400B is a CMOS dynamic RAM organized 4,194,304 word 4 bit. It employs the most advanced CMOS technology for high performance and low power. The HM5117400B offers Fast Page Mode as a high speed access mode.

Features
• Single 5 V (±10%)
• High speed
    - Access time : 60 ns/ 70 ns/ 80 ns (max)
• Low power dissipation
    - Active mode : 605 mW/550 mW/495 mW(max)
    - Standby mode : 11 mW (max)
                               : 0.83 mW (max) (L-version)
• Fast page mode capability
• Long refresh period
    - 2048 refresh cycles : 32 ms
                                      : 128 ms (L-version)
    3 variations of refresh
    - RAS-only refresh
    - CAS-before-RAS refresh
    - Hidden refresh
• Battery backup operation (L-version)
• Test function
    - 16-bit parallel test mode