W987D6HBGX6E-TR Datasheet, PDF (13/68 Pages) Winbond – 128Mb Mobile LPSDR

PARAMETER
Command Hold Time
Refresh Time
Mode register Set Cycle
Time
Ref to Ref/Active
Command period
Self Refresh exit to next
valid command delay
W987D6HB / W987D2HB
SYM
tCMH
tREF
tRSC
-6
MIN. MAX.
1
64
12
128Mb Mobile LPSDR
-75
MIN. MAX.
UNIT
NOTE
1
-
ns
64
ms
15
-
ns
8
tRFC 72
72
-
ns
tXSR 115
115
-
ns
6.6.2 AC Test Condition
SYMBOL
VIH(min)
VIL(max)
VREF
VOTR
SLEW
PARAMETER
Input High Voltage Level (AC)
Input Low Voltage Level (AC)
Input Signal Reference Level
Output Signal Reference Level
Input Signal Slew Rate
VALUE
0.8 x VDDQ
0.2 x VDDQ
0.5 x VDDQ
0.5 x VDDQ
1
UNIT
V
V
V
V
V/ns
V_DDQ
V_SS
t_T
t_T
SLEW = ( V_IH(min)- V_IL(max) / t_T
V_IH(min)
V_REF
output
VTT=0.9V
RT=50Ω
Z = 50 Ω
V_IL(max)
CLOAD = 30pF ^VOTR
AC TEST LOAD
Transition times are measured between VIH and VIL.
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Publication Release Date: Jun. 09, 2011
Revision A01-002