W989D6CB Datasheet, PDF (12/67 Pages) Winbond – 512Mb Mobile LPSDR

PARAMETER
CKE Set-up Time
CKE Hold Time
Command Set-up Time
Command Hold Time
Refresh Time
Mode register Set Cycle
Time
Ref to Ref/Active
Command period
Self Refresh exit to next
valid command delay
W989D6CB / W989D2CB
SYM
tCKS
tCKH
tCMS
tCMH
tREF
tRSC
-6
MIN. MAX.
1.5
1
1.5
1
64
12
512Mb Mobile LPSDR
-75
MIN. MAX. ^{UNIT NOTE}
1.5
-
ns
1
-
ns
1.5
-
ns
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_IH(min)
V_REF
V_IL(max)
V_SS
t_T
t_T
SLEW = ( V_IH(min)- V_IL(max) / t_T
Transition times are measured between VIH and VIL.
output
RT=50Ω
VTT=0.9V
Z = 50 Ω
CLOAD = 30pF
AC TEST LOAD
VOTR
- 12 -
Publication Release Date: Sep, 22, 2011
Revision A01-005