Datasheet

Input Clock Frequency Change ...................................................................................................................... 119
Write Leveling ............................................................................................................................................... 121
Write Leveling Procedure ........................................................................................................................... 123
Write Leveling Mode Exit Procedure ........................................................................................................... 125
Initialization ................................................................................................................................................. 126
Voltage Initialization / Change ....................................................................................................................... 128
V
DD
Voltage Switching ............................................................................................................................... 129
Mode Registers .............................................................................................................................................. 130
Mode Register 0 (MR0) ................................................................................................................................... 131
Burst Length ............................................................................................................................................. 131
Burst Type ................................................................................................................................................. 132
DLL RESET ................................................................................................................................................ 133
Write Recovery .......................................................................................................................................... 133
Precharge Power-Down (Precharge PD) ...................................................................................................... 134
CAS Latency (CL) ....................................................................................................................................... 134
Mode Register 1 (MR1) ................................................................................................................................... 135
DLL Enable/DLL Disable ........................................................................................................................... 135
Output Drive Strength ............................................................................................................................... 136
OUTPUT ENABLE/DISABLE ...................................................................................................................... 136
TDQS Enable ............................................................................................................................................. 136
On-Die Termination .................................................................................................................................. 137
WRITE LEVELING ..................................................................................................................................... 137
POSTED CAS ADDITIVE Latency ................................................................................................................ 137
Mode Register 2 (MR2) ................................................................................................................................... 138
CAS WRITE Latency (CWL) ........................................................................................................................ 139
AUTO SELF REFRESH (ASR) ....................................................................................................................... 139
SELF REFRESH TEMPERATURE (SRT) ........................................................................................................ 140
SRT vs. ASR ............................................................................................................................................... 140
DYNAMIC ODT ......................................................................................................................................... 140
Mode Register 3 (MR3) ................................................................................................................................... 141
MULTIPURPOSE REGISTER (MPR) ............................................................................................................ 141
MPR Functional Description ...................................................................................................................... 142
MPR Register Address Definitions and Bursting Order ................................................................................. 143
MPR Read Predefined Pattern .................................................................................................................... 149
MODE REGISTER SET (MRS) Command ........................................................................................................ 149
ZQ CALIBRATION Operation ......................................................................................................................... 150
ACTIVATE Operation ..................................................................................................................................... 151
READ Operation ............................................................................................................................................ 153
WRITE Operation .......................................................................................................................................... 164
DQ Input Timing ....................................................................................................................................... 172
PRECHARGE Operation ................................................................................................................................. 174
SELF REFRESH Operation .............................................................................................................................. 174
Extended Temperature Usage ........................................................................................................................ 176
Power-Down Mode ........................................................................................................................................ 177
RESET Operation ........................................................................................................................................... 185
On-Die Termination (ODT) ............................................................................................................................
187
Functional Representation of ODT ............................................................................................................. 187
Nominal ODT ............................................................................................................................................ 187
Dynamic ODT ............................................................................................................................................... 189
Dynamic ODT Special Use Case ................................................................................................................. 189
Functional Description .............................................................................................................................. 189
Synchronous ODT Mode ................................................................................................................................ 195
8Gb: x4, x8, x16 DDR3L SDRAM
Description
4
Rev 2.0 June 2016
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