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NEC |
DATA SHEET
MOS INTEGRATED CIRCUIT
MC-4516CB647
16M-WORD BY 64-BIT SYNCHRONOUS DYNAMIC RAM MODULE
UNBUFFERED TYPE
5 Description
The MC-4516CB647EF and MC-4516CB647PF are 16,777,216 words by 64 bits synchronous dynamic RAM
module on which 8 pieces of 128M SDRAM: µPD45128841 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
• 16,777,216 words by 64 bits organization
• Clock frequency and access time from CLK
Part number
/CAS latency
Clock frequency
(MAX.)
Access time from CLK
(MAX.)
MC-4516CB647EF-A75
5
5 MC-4516CB647PF-A75
5
CL = 3
CL = 2
CL = 3
CL = 2
133 MHz
100 MHz
133 MHz
100 MHz
5.4 ns
6.0 ns
5.4 ns
6.0 ns
• 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)
5 • 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
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. M14406EJ2V0DS00 (2nd edition)
Date Published January 2000 NS CP(K)
Printed in Japan
The mark • shows major revised points.
©
1999
MC-4516CB647
Ordering Information
Part number
Clock frequency
(MAX.)
Package
Mounted devices
MC-4516CB647EF-A75
133 MHz
168-pin Dual In-line Memory Module
(Socket Type)
8 pieces of µPD45128841G5 (Rev. E)
(10.16 mm (400) TSOP (II))
5 MC-4516CB647PF-A75
Edge connector : Gold plated
34.93 mm height
8 pieces of µPD45128841G5 (Rev. P)
(10.16 mm (400) TSOP (II))
2 Data Sheet M14406EJ2V0DS00
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