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The W634GU6MB is a 4G bits DDR3L SDRAM and speed involving -09, 09J, 9I, -11, 11J, 9I, -12, 12J, 12I, -15, 15J and 15I



Density 4Gb Status N
Vcc 1.283V to 1.45V Frequency 667 / 800 / 933 / 1066 MHz
Package VFBGA 96 Tempture Range C-temp, I-temp
Feature List Backward compatible to VDD, VDDQ = 1.5V ± 0.075V
Double Data Rate architecture: two data transfers per clock cycle

Eight internal banks for concurrent operation

8 bit prefetch architecture

CAS Latency: 5, 6, 7, 8, 9, 10, 11, 13 and 14

Burst Length 8(BL8) and burst chop 4 (BC4) modes: fixed via mode register (MRS) or selectable On-The-Fly (OTF)

Programmable read burst ordering: interleaved or nibble sequential

Bi-directional, differential data strobes (DQS and /DQS# ) are transmitted / received with data

Edge-aligned with Read data and center-aligned with Write data

DLL aligns DQ and DQS transitions with clock

Differential clock inputs (CK and /CK# )

Commands entered on each positive CK edge, data and data mask are referenced to both edges of a differential data strobe pair (double data rate)
Posted CAS with programmable additive latency (AL = 0, CL - 1 and CL - 2) for improved command, address and data bus efficiency

Read Latency = Additive Latency plus CAS Latency (RL = AL + CL)

Auto-precharge operation for read and write bursts

Refresh, Self-Refresh, Auto Self-refresh (ASR) and Partial array self refresh (PASR)

Precharged Power Down and Active Power Down

Data masks (DM) for write data

Programmable CAS Write Latency (CWL) per operating frequency

Write Latency WL = AL + CWL

Multi purpose register (MPR) for readout a predefined system timing calibration bit sequence

System level timing calibration support via write leveling and MPR read pattern

ZQ Calibration for output driver and ODT using external reference resistor to ground

Asynchronous RESET# pin for Power-up initialization sequence and reset function

Programmable on-die termination (ODT) for data, data mask and differential strobe pairs

Dynamic ODT mode for improved signal integrity and preselectable termination impedances during writes
2K Byte page size
Datasheet オンライン購入

Technical Documentation

Resources

Product Brief

Specialty DRAM and Mobile DRAM

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  • File Type:pdf
  • Updated:27/05/2020
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