Description
NT256D72S4PA0GR is a registered 184-Pin Double Data Rate (DDR) Synchronous DRAM Dual In-Line Memory Module (DIMM), organized as a one-bank high-speed memory array. The 32Mx72 module is a single-bank DIMM that uses eighteen 32Mx4 DDR SDRAMs in 400 mil TSOP packages. The DIMM achieves high-speed data transfer rates of up to 266MHz. The DIMM is intended for use in applications operating from 100 MHz to 133 MHz clock speeds with data rates of 200 to 266 MHz. Clock enable CKE0 controls all devices on the DIMM.

FEATUREs
• 184-Pin 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
• Single Pulsed RAS interface
• SDRAMs have 4 internal banks for concurrent operation
• Module has one physical bank
• 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:
    - DIMM CAS Latency: 3, 3.5
    - 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
• 12/11/2 Addressing (row/column/bank)
• 15.625 µs Max. Average Periodic Refresh Interval
• Serial Presence Detect
• Gold contacts
• SDRAMs in 66-pin TSOP Type II Package