W632GU6MB
16M 8 BANKS 16 BIT DDR3L SDRAM
Table of Contents-
1.
2.
3.
4.
5.
6.
7.
8.
GENERAL DESCRIPTION ...................................................................................................................5
FEATURES...........................................................................................................................................5
ORDER INFORMATION.......................................................................................................................6
KEY PARAMETERS .............................................................................................................................7
BALL CONFIGURATION ......................................................................................................................8
BALL DESCRIPTION............................................................................................................................9
BLOCK DIAGRAM ..............................................................................................................................11
FUNCTIONAL DESCRIPTION............................................................................................................12
Basic Functionality ..............................................................................................................................12
RESET and Initialization Procedure....................................................................................................12
8.1
8.2
8.2.1
8.2.2
Power-up Initialization Sequence.....................................................................................12
Reset Initialization with Stable Power ..............................................................................14
8.3
Programming the Mode Registers.......................................................................................................15
8.3.1
Mode Register MR0 .........................................................................................................17
Burst Length, Type and Order ................................................................................18
CAS Latency...........................................................................................................18
Test Mode...............................................................................................................19
DLL Reset...............................................................................................................19
Write Recovery.......................................................................................................19
Precharge PD DLL .................................................................................................19
Mode Register MR1 .........................................................................................................20
DLL Enable/Disable................................................................................................20
Output Driver Impedance Control...........................................................................21
ODT RTT Values....................................................................................................21
Additive Latency (AL) .............................................................................................21
Write leveling..........................................................................................................21
Output Disable........................................................................................................21
Mode Register MR2 .........................................................................................................22
Partial Array Self Refresh (PASR)..........................................................................23
CAS Write Latency (CWL)......................................................................................23
Auto Self Refresh (ASR) and Self Refresh Temperature (SRT) .............................23
Dynamic ODT (Rtt_WR).........................................................................................23
Mode Register MR3 .........................................................................................................24
Multi Purpose Register (MPR)................................................................................24
8.3.1.1
8.3.1.2
8.3.1.3
8.3.1.4
8.3.1.5
8.3.1.6
8.3.2
8.3.2.1
8.3.2.2
8.3.2.3
8.3.2.4
8.3.2.5
8.3.2.6
8.3.3
8.3.3.1
8.3.3.2
8.3.3.3
8.3.3.4
8.3.4
8.3.4.1
8.4
8.5
8.6
8.7
No OPeration (NOP) Command..........................................................................................................25
Deselect Command.............................................................................................................................25
DLL-off Mode ......................................................................................................................................25
DLL on/off switching procedure...........................................................................................................26
8.7.1
8.7.2
DLL “on” to DLL “off” Procedure.......................................................................................26
DLL “off” to DLL “on” Procedure.......................................................................................27
8.8
8.9
Input clock frequency change .............................................................................................................28
8.8.1
8.8.2
Frequency change during Self-Refresh............................................................................28
Frequency change during Precharge Power-down..........................................................28
Write Leveling .....................................................................................................................................30
8.9.1
DRAM setting for write leveling & DRAM termination function in that mode ....................31
Publication Release Date: Nov. 22, 2017
Revision: A02
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