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MC-458CB646 Datasheet PDF - NEC => Renesas Technology

Part NameDescriptionManufacturer
MC-458CB646 8M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE NEC
NEC => Renesas Technology NEC
MC-458CB646 Datasheet PDF : MC-458CB646 pdf   
MC-458CB646LFA-A10 image

Description
The MC-458CB646 is a 8,388,608 words by 64 bits synchronous dynamic RAM module on which 8 pieces of 64M SDRAM: µPD4564841 are assembled.
This module provides high density and large quantities of memory in a small space without utilizing the surface mounting technology on the printed circuit board.
Decoupling capacitors are mounted on power supply line for noise reduction.

Features
• 8,388,608 words by 64 bits organization
• Clock frequency and access time from CLK
• Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge
• Pulsed interface
• Possible to assert random column address in every cycle
• Quad internal banks controlled by BA0 and BA1 (Bank Select)
• Programmable burst-length: 1, 2, 4, 8 and full page
• Programmable wrap sequence (sequential / interleave)
• Programmable /CAS latency (2, 3)
• Automatic precharge and controlled precharge
• CBR (Auto) refresh and self refresh
• All DQs have 10 Ω ±10 % of series resistor
• Single 3.3 V ± 0.3 V power supply
• LVTTL compatible
• 4,096 refresh cycles/64 ms
• Burst termination by Burst Stop command and Precharge command
• 168-pin dual in-line memory module (Pin pitch = 1.27 mm)
• Unbuffered type
• Serial PD

 

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