MC-458CB647 Description
The MC-458CB647EFA and MC-458CB647PFA are 8,388,608 words by 64 bits synchronous dynamic RAM module on which 4 pieces of 128M SDRAM : µPD45128163 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.
MC-458CB647 Key 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) 5
- Programmable /CAS latency (2, 3)
- Automatic precharge and controlled precharge