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Part Number: MC-458CA727
Description: The MC-458CA727EFA and MC-458CA727PFA are 8,388,608 words by 72 bits synchronous dynamic RAM module&nb...
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MC-458CA727
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DataSheet
General Description
MC-458CA727 General Description
The MC-458CA727EFA and MC-458CA727PFA are 8,388,608 words by 72 bits synchronous dynamic RAM module on which 5 pieces of 128M SDRAM : mPD45128163 are assembled.
This module provides high density and large quantities of memory in a small space without utilizing the surfacemounting technology on the printed circuit board.
Decoupling capacitors are mounted on power supply line for noise reduction.
MC-458CA727 Maximum Ratings
| Parameter | Symbol | Condition | Rating | Unit |
| Voltage on power supply pin relative to GND | VCC | 0.5 to +4.6 | V | |
| Voltage on input pin relative to GND | VT | 0.5 to +4.6 | V | |
| Short circuit output current | IO | 50 | mA | |
| Power dissipation | PD | W | ||
| Operating ambient temperature | TA | 0 to +70 | °C | |
| Storage temperature | Tstg | 55 to +125 | °C |
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
MC-458CA727 Features
· 8,388,608 words by 72 bits organization (ECC Type)
· 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 10W ± 10 % of series resistor
· Single 3.3V ± 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
· Clock frequency and access time from CLK
| Part number | /CAS latency | Clock frequency (MAX.) | Access time from CLK (MAX.) |
| MC-458CA727EFA-A75 | CL = 3 | 133MHz | 5.4 ns |
| CL = 2 | 100MHz | 6.0ns | |
| MC-458CA727PFA-A75 | CL = 3 | 133 MHz | 5.4 ns |
| CL = 2 | 100 MHz | 6.0 ns |
· 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 10W ± 10 % of series resistor
· Single 3.3V ± 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
MC-458CA727 Connection Diagram
MC-458CA727
PDF/DataSheet Download
- Datasheet: MC-458CA727
- File Size: 203575 KB
- Manufacturer: NEC [NEC]
- Click here to Download
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