HM5164400 Series
HM5165400 Series
64 M FP DRAM (16-Mword × 4-bit)
8 k Refresh/4 k Refresh
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ADE-203-812B (Z)
Rev. 1.0
Feb. 27, 1998
Description
The Hitachi HM5164400 Series, HM5165400 Series are 64M-bit dynamic RAMs organized as 16,777,216word × 4-bit. They have realized high performance and low power by employing CMOS process
technology. The HM5164400 Series, HM5165400 Series offer Fast Page Mode as a high speed access
mode. They have the package variations of standard 32-pin plastic SOJ and standard 32-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: 396 mW/360 mW (max) (HM5164400 Series)
: 468 mW/396 mW (max) (HM5165400 Series)
Standby : 1.8 mW (max) (CMOS interface)
: 0.54 mW (max) (L-version)
• Fast page mode capability
• Refresh cycles
#$-only refresh
8192 cycles
/64 ms (HM5164400)
/128 ms (HM5164400L) (L-version)
4096 cycles
/64 ms (HM5165400)
/128 ms (HM5165400L) (L-version)
CBR/Hidden refresh
4096 cycles
/64 ms (HM5164400, HM5165400)
/128 ms (HM5164400L, HM5165400L) (L-version)
