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FMS1616LAX-XXEX Datasheet - Page 18

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AC Characteristics
AC Characteristics
Parameter
Last data-in to new READ/WRITE command
Last data-in to PRECHARGE command
[41.]
LOAD MODE REGISTER command to ACTIVE or REFRESH command
Data-out to high-impedance from PRECHARGE command
Note :
33. The clock frequency must remain constant (stable clock is defined as a signal cycling within timing constraints specified for the clock pin) during access or precharge states
(READ, WRITE, including t
, and PRECHARGE commands). CKE may be used to reduce the data rate.
WR
34. AC characteristics assume t
= 1ns.
T
35. Auto precharge mode only.
36. Precharge mode only.
37. CLK must be toggled a minimum of two times during this period.
38. Required clocks are specified by JEDEC functionality and are not dependent on any timing parameter.
39. Timing actually specified by t
; clock(s) specified as a reference only at minimum cycle rate.
CKS
40. Timing actually specified by t
plus t
; clock(s) specified as a reference only at minimum cycle rate.
WR
RP
41. Timing actually specified by t
.
WR
42. JEDEC and PC100 specify three clocks.
Rev0.3, May., 2010
Symbol
[38.]
t
CDL
t
RDL
t
[42.]
MRD
CL=3
t
(3)
ROH
[38.]
CL=2
t
(2)
ROH
CL=1
t
(1)
ROH
FMS1616LAx-xxEx
-60
-75
Units
Min
Max
Min
Max
1
1
2
2
2
2
3
3
2
2
1
1
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK

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