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W631GG6KB
8.17.4
Power-Down clarifications - Case 3 ................................................................................. 76
8.18
ZQ Calibration Commands .................................................................................................................. 77
8.18.1
8.18.2
8.18.3
ZQ Calibration Description ............................................................................................... 77
ZQ Calibration Timing ...................................................................................................... 78
ZQ External Resistor Value, Tolerance, and Capacitive loading ...................................... 78
8.19
On-Die Termination (ODT) .................................................................................................................. 79
8.19.1
8.19.2
8.19.2.1
8.19.2.2
8.19.2.3
8.19.3
8.19.3.1
8.19.3.2
8.19.4
8.19.4.1
8.19.4.2
8.19.4.3
8.19.4.4
ODT Mode Register and ODT Truth Table ...................................................................... 79
Synchronous ODT Mode .................................................................................................. 80
ODT Latency and Posted ODT ............................................................................... 80
Timing Parameters ................................................................................................. 80
ODT during Reads .................................................................................................. 82
Dynamic ODT .................................................................................................................. 83
Functional Description: ........................................................................................... 83
ODT Timing Diagrams ............................................................................................ 84
Asynchronous ODT Mode ................................................................................................ 88
Synchronous to Asynchronous ODT Mode Transitions .......................................... 89
Synchronous to Asynchronous ODT Mode Transition during Power-Down Entry .. 89
Asynchronous to Synchronous ODT Mode Transition during Power-Down Exit..... 92
Asynchronous to Synchronous ODT Mode during short CKE high and short CKE
low periods
93
9.
10.
9.1
9.2
9.3
10.1
10.2
10.3
OPERATION MODE ........................................................................................................................... 94
Command Truth Table ........................................................................................................................ 94
CKE Truth Table ................................................................................................................................. 96
Simplified State Diagram ..................................................................................................................... 97
ELECTRICAL CHARACTERISTICS ................................................................................................... 98
Absolute Maximum Ratings................................................................................................................. 98
Operating Temperature Condition ....................................................................................................... 98
DC & AC Operating Conditions ........................................................................................................... 99
10.3.1
Recommended DC Operating Conditions ........................................................................ 99
10.4
10.5
10.6
Input and Output Leakage Currents .................................................................................................... 99
Interface Test Conditions .................................................................................................................... 99
DC and AC Input Measurement Levels ............................................................................................. 100
10.6.1
10.6.2
10.6.3
10.6.4
10.6.5
10.6.6
10.6.7
DC and AC Input Levels for Single-Ended Command and Address Signals .................. 100
DC and AC Input Levels for Single-Ended Data Signals ................................................ 101
Differential swing requirements for clock (CK - CK#) and strobe (DQS - DQS#) ........... 103
Single-ended requirements for differential signals ......................................................... 104
Differential Input Cross Point Voltage ............................................................................ 105
Slew Rate Definitions for Single-Ended Input Signals .................................................... 106
Slew Rate Definitions for Differential Input Signals ........................................................ 106
10.7
DC and AC Output Measurement Levels .......................................................................................... 107
10.7.1
10.7.1.1
10.7.1.2
Output Slew Rate Definition and Requirements ............................................................. 107
Single Ended Output Slew Rate ........................................................................... 108
Differential Output Slew Rate ............................................................................... 109
Publication Release Date: Dec. 09, 2013
Revision A05
-3-
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