Description

The μPD45128441, 45128841, 45128163 are high-speed 134,217,728-bit synchronous dynamic random-access memories, organized as 8,388,608 × 4 × 4, 4,194,304 × 8 × 4, 2,097,152 × 16 × 4 (word × bit × bank), respectively.

The synchronous DRAMs achieved high-speed data transfer using the pipeline architecture.

Features

? 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(A13) and BA1(A12)

? Byte control (×16) by LDQM and UDQM

? Programmable Wrap sequence (Sequential / Interleave)

? Programmable burst length (1, 2, 4, 8 and full page)

? Programmable /CAS latency (2 and 3)

? Ambient temperature (TA): ?40 to + 85°C

? Automatic precharge and controlled precharge

? CBR (Auto) refresh and self refresh

? ×4, ×8, ×16 organization

? Single 3.3 V ± 0.3 V power supply

? LVTTL compatible inputs and outputs

? 4,096 refresh cycles / 64 ms

? Burst termination by Burst stop command and Precharge command