Description
The Hitachi HM5116400 Series, HM5117400 Series are CMOS dynamic RAMs organized 4,194,304-word x 4-bit. They employ the most advanced 0.5 m CMOS technology for high performance and low power. The HM5116400 Series, HM5117400 Series offer Fast Page Mode as a high speed access mode. They have package variations of standard 300-mil 26-pin plastic SOJ and standard 300-mil 26-pin plastic TSOP.

Features
• Single 5 V ( 10%)
• Access time: 50 ns/60 ns/70 ns (max)
• Power dissipation
    - Active mode : 495 mW/440 mW/385 mW (max) (HM5116400 Series)
                           : 550 mW/495 mW/440 mW (max) (HM5117400 Series)
    - Standby mode : 11 mW (max)
                               : 0.83 mW (max) (L-version)
• Fast page mode capability
• Long refresh period
    - 4096 refresh cycles : 64 ms (HM5116400 Series)
                                      : 128 ms (L-version)
    - 2048 refresh cycles : 32 ms (HM5117400 Series)
                                      : 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