W632GU6NB
Publication Release Date: Aug. 20, 2018
Revision: A01
- 5 -
1. GENERAL DESCRIPTION
The W632GU6NB is a 2G bits DDR3L SDRAM, organized as 16,777,216 words
8
banks
16 bits.
This device achieves high speed transfer rates up to 2133 MT/s (DDR3L-2133) for various
applications. This device is sorted into the following speed grades: -09, -11, -12, -15, 09I, 11I, 12I, 15I,
09J, 11J, 12J and 15J.
The -09 ,09I and 09J speed grades are compliant to the DDR3-2133L (14-14-14) specification (The
09I industrial grade which is guaranteed to support -40°C
≤ T
CASE
≤ 95°C, the 09J industrial plus
grade which is guaranteed to support -40°C
≤ T
CASE
≤ 105°C).
The -11 ,11I and 11J speed grades are compliant to the DDR3L-1866 (13-13-13) specification (The
11I industrial grade which is guaranteed to support -40°C
≤ T
CASE
≤ 95°C, the 11J industrial plus
grade which is guaranteed to support -40°C
≤ T
CASE
≤ 105°C).
The -12, 12I and 12J speed grades are compliant to the DDR3L-1600 (11-11-11) specification (The
12I industrial grade which is guaranteed to support -40°C
≤ T
CASE
≤ 95°C, the 12J industrial plus
grade which is guaranteed to support -40°C
≤ T
CASE
≤ 105°C).
The -15, 15I and 15J speed grades are compliant to the DDR3L-1333 (9-9-9) specification (The 15I
industrial grade which is guaranteed to support -40°C
≤ T
CASE
≤ 95°C, the 15J industrial plus grade
which is guaranteed to support -40°C
≤ T
CASE
≤ 105°C).
The W632GU6NB is designed to comply with the following key DDR3L SDRAM features such as
posted CAS#, programmable CAS# Write Latency (CWL), ZQ calibration, on die termination and
asynchronous reset. All of the control and address inputs are synchronized with a pair of externally
supplied differential clocks. Inputs are latched at the cross point of differential clocks (CK rising and
CK# falling). All I/Os are synchronized with a differential DQS-DQS# pair in a source synchronous
fashion.
2. FEATURES
Power Supply: 1.35V (typ.), V
DD
, V
DDQ
= 1.283V to 1.45V
Backward compatible to V
DD
, V
DDQ
= 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)