HM514400BLTT-7数据手册HITACHI中文资料规格书

描述 Description

The Hitachi HM514400B/BL, HM514400C/CL are CMOS dynamic RAM organized 1,048,576-word × 4-bit. HM514400B/BL, HM514400C/CL have realized higher density, higher performance and various functions by employing 0.8 µm CMOS process technology and some new CMOS circuit design technologies. The HM514400B/BL, HM514400C/CL offer Fast Page Mode as a high speed access mode. Multiplexed address input permits the HM514400B/BL, HM514400C/CL to be packaged in standard 300-mil 26-pin plastic SOJ, standard 400-mil 20-pin plastic ZIP and 26-pin plastic TSOP II.

特性 Features

• Single 5 V (±10%)
• High speed
   — Access time
      60 ns/70 ns/80 ns (max)
• Low power dissipation
   — Active mode
      605 mW/550 mW/495 mW (max)
   — Standby mode 11 mW (max)
      0.55 mW (max) (L-version)
• Fast page mode capability
• 1024 refresh cycles : 16 ms
   1024 refresh cycles : 128 ms (L-version)
• 3 variations of refresh
   — RAS-only refresh
   — CAS-before-RAS refresh
   — Hidden refresh
• Test function
• Battery back up operation
   — HM514400BL Series (L-version)
   — HM514400CL Series (L-version)