Description

The Hitachi HM5164165F Series, HM5165165F 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. HM5164165F Series, HM5165165F 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) (HM5164165F Series)

: 504 mW/432 mW (max) (HM5165165F Series)

- Standby : 1.8 mW (max) (CMOS interface)

: 1.1 mW (max) (L-version)

• EDO page mode capability

• Refresh cycles

- RAS-only refresh

8192 cycles /64 ms (HM5164165F, HM5164165FL)

4096 cycles /64 ms (HM5165165F, HM5165165FL)

 - CBR/Hidden refresh

4096 cycles /64 ms (HM5164165F, HM5164165FL, HM5165165F, HM5165165FL)

• 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)