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| HB56D136 Series 1,048,576-word x 36-bit High Density Dynamic RAM Module Description The HB56D136 is a 1-M x 36-bit dynamic RAM module, mounted 8 pieces of 4 Mbit DRAM (HM514400CS/CLS) sealed in SOJ package and 2 pieces of 2 Mbit DRAM (HM512200BS/BLS) sealed in SOJ package. An outline of the HB56D136 is 72-pin single in-line package. Therefore, the HB56D136 makes high density mounting possible without surface mount technology. The HB56D136 provides common data inputs and outputs. Decoupling capacitors are mounted beneath each SOJ. Features * 72-pin Lead pitch: 1.27 mm * Single 5 V (5%) supply * High speed Access time: 60 ns/70 ns/80 ns (max) * Low power dissipation Active mode: 5.46 W/4.94 W/4.41 W (max) Standby mode: 105 mW (max) 5.25 mW (max) (L-version) * Fast page mode capability * 1,024 refresh cycle: 16 ms 128 ms (L-version) * 3 variations of refresh RAS only refresh CAS-before-RAS refresh Hidden refresh * TTL compatible HB56D136 Series Ordering Information Type No. HB56D136BW-6C HB56D136BW-7C HB56D136BW-8C HB56D136BW-6CL HB56D136BW-7CL HB56D136BW-8CL HB56D136SBW-6C HB56D136SBW-7C HB56D136SBW-8C HB56D136SBW-6CL HB56D136SBW-7CL HB56D136SBW-8CL Access Time 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 60 ns 70 ns 80 ns 72-pin SIP socket type Solder Package 72-pin SIP socket type Contact Pad Gold Note: The specification of this device is subject to change without notice. Please contact your nearest Hitachi's Sales Dept. regarding specification. 2 |
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