描述 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

特性 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)