Hynix HMT42GR7BFR4C-RDT8 User Manual
Rev. 1.0 / May. 2014
43
Standard Speed Bins
DDR3 SDRAM Standard Speed Bins include tCK, tRCD, tRP, tRAS and tRC for each corresponding bin.
DDR3-800 Speed Bins
For specific Notes See "Speed Bin Table Notes" on page 48.
Speed Bin
DDR3-800E
Unit
Notes
CL - nRCD - nRP
6-6-6
Parameter
Symbol
min
max
Internal read command to first data
t
AA
15
20
ns
ACT to internal read or write delay time
t
RCD
15
—
ns
PRE command period
t
RP
15
—
ns
ACT to ACT or REF command period
t
RC
52.5
—
ns
ACT to PRE command period
t
RAS
37.5
9 * tREFI
ns
CL = 6
CWL = 5
t
CK(AVG)
2.5
3.3
ns
1,2,3
Supported CL Settings
6
n
CK
Supported CWL Settings
5
n
CK