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NT256D72S89AKGU Datasheet PDF - Nanya Technology

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NT256D72S89AKGU is a Low Profile Registered 184-Pin 1U Double Data Rate (DDR) Synchronous DRAM Dual In-Line Memory Module (DIMM), organized as a one-bank 32Mx72 high-speed memory array. The module uses nine 32Mx8 DDR SDRAMs in 400 mil TSOP II packages. These DIMMs are manufactured using raw cards developed for broad industry use as reference designs. The use of these common design files minimizes electrical variation between suppliers. All NANYA 184 DDR SDRAM DIMMs provide a high-performance, flexible 8-byte interface in a 5.25” long space-saving footprint.

• 184-Pin 1U Registered 8-Byte Dual In-Line Memory Module
• 32Mx72 Double Data Rate (DDR) SDRAM DIMM
• Performance:
• Intended for 100 MHz and 133 MHz applications
• Inputs and outputs are SSTL-2 compatible
• VDD = 2.5Volt ± 0.2, VDDQ = 2.5Volt ± 0.2
• SDRAMs have 4 internal banks for concurrent operation
• Differential clock inputs
• Data is read or written on both clock edges
• Bi-directional data strobe with one clock cycle preamble and one-half clock post-amble
• Address and control signals are fully synchronous to positive clock edge
• Programmable Operation:
    - Device CAS Latency: 2, 2.5
    - Burst Type: Sequential or Interleave
    - Burst Length: 2, 4, 8
    - Operation: Burst Read and Write
• Auto Refresh (CBR) and Self Refresh Modes
• Automatic and controlled precharge commands
• 13/10/1 Addressing (row/column/bank)
• 7.8 µs Max. Average Periodic Refresh Interval
• Serial Presence Detect
• Gold contacts
• SDRAMs in 66-pin TSOP Type II Package


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