Datasheet

Table 55: Electrical Characteristics and AC Operating Conditions (Continued)
Notes 1–8 apply to the entire table
Parameter Symbol
DDR3L-800 DDR3L-1066 DDR3L-1333 DDR3L-1600
Unit NotesMin Max Min Max Min Max Min Max
Auto precharge write recovery + precharge time
t
DAL MIN = WR +
t
RP/
t
CK (AVG); MAX = N/A CK
MODE REGISTER SET command cycle time
t
MRD MIN = 4CK; MAX = N/A CK
MODE REGISTER SET command update delay
t
MOD MIN = greater of 12CK or 15ns; MAX = N/A CK
MULTIPURPOSE REGISTER READ burst end to mode register set for multipurpose register exit
t
MPRR MIN = 1CK; MAX = N/A CK
Calibration Timing
ZQCL command: Long calibration time
POWER-UP and RE- SET operation
t
ZQinit 512 – 512 – 512 – 512 – CK
Normal operation
t
ZQoper 256 – 256 – 256 – 256 – CK
ZQCS command: Short calibration time
t
ZQCS 64 – 64 – 64 – 64 – CK
Initialization and Reset Timing
Exit reset from CKE HIGH to a valid command
t
XPR MIN = greater of 5CK or
t
RFC + 10ns; MAX = N/A CK
Begin power supply ramp to power supplies stable
t
VDDPR MIN = N/A; MAX = 200 ms
RESET# LOW to power supplies stable
t
RPS MIN = 0; MAX = 200 ms
RESET# LOW to I/O and R
TT
High-Z
t
IOZ MIN = N/A; MAX = 20 ns 35
Refresh Timing
REFRESH-to-ACTIVATE or REFRESH command period
t
RFC – 1Gb MIN = 110; MAX = 70,200 ns
t
RFC – 2Gb MIN = 160; MAX = 70,200 ns
t
RFC – 4Gb MIN = 260; MAX = 70,200 ns
t
RFC – 8Gb MIN = 350; MAX = 70,200 ns
Maximum refresh period
T
C
≤ 85°C – 64 (1X) ms 36
T
C
> 85°C 32 (2X) ms 36
Maximum average periodic refresh
T
C
≤ 85°C
t
REFI 7.8 (64ms/8192) μs 36
T
C
> 85°C 3.9 (32ms/8192) μs 36
Self Refresh Timing
Exit self refresh to commands not requiring a locked DLL
t
XS MIN = greater of 5CK or
t
RFC + 10ns; MAX = N/A CK
8Gb: x4, x8, x16 DDR3L SDRAM
Electrical Characteristics and AC Operating Conditions
76
Rev 2.0 June 2016
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