Description
The Hitachi HM5164165 Series, HM5165165 Series are 64M-bit dynamic RAMs organized as 4,194,304-word × 16-bit. They have realized high performance and low power by employing CMOS process technology. HM5164165 Series, HM5165165 Series offer Extended Data Out (EDO) Page Mode as a high speed access mode. They have the package variations of standard 50-pin plastic SOJ and standerd 50-pin plastic TSOPII

FEATUREs
• Single 3.3 V supply: 3.3 V ± 0.3 V
• Access time: 50 ns/60 ns (max)
• Power dissipation
- Active: 432 mW/396 mW (max) (HM5164165 Series)
             : 504 mW/432 mW (max) (HM5165165 Series)
- Standby : 1.8 mW (max) (CMOS interface)
                 : 0.54 mW (max) (L-version)
• EDO page mode capability
• Refresh cycles
- RAS-only refresh
       8192 cycles /64 ms (HM5164165)
                      /128 ms (HM5164165L) (L-version)
       4096 cycles /64 ms (HM5165165)
                       /128 ms (HM5165165L) (L-version)
- CBR/Hidden refresh
        4096 cycles /64 ms (HM5164165, HM5165165)
                       /128 ms (HM5164165L, HM5165165L) (L-version)
• 4 variations of refresh
- RAS-only refresh
- CAS-before-RAS refresh
- Hidden refresh
- Self refresh (L-version)
• 2CAS-byte control
• Battery backup operation (L-version)