W972GG8JB-3-TR Datasheet, PDF (44/87 Pages) Winbond – 32M 8 BANKS 8 BIT DDR2 SDRAM

W972GG8JB
AC Characteristics and Operating Condition for -18 speed grade, continued
Notes: 1-3 and 45-47 apply to the entire table
SYM.
tWPRE
tWPST
tRPRE
tRPST
SPEED GRADE
Bin(CL-tRCD-tRP)
PARAMETER
Write preamble
Write postamble
Read preamble
Read postamble
DDR2-1066 (-18)
7-7-7
MIN.
MAX.
0.35

0.4
0.6
0.9
1.1
0.4
0.6
tDS(base) DQ and DM input setup time
0

tDH(base) DQ and DM input hold time
75

tDS(ref) DQ and DM input setup time
200

tDH(ref)
tDIPW
DQ and DM input hold time
DQ and DM input pulse width for each input
200

0.35

UNITS²⁵ NOTES
tCK(avg)
tCK(avg)
tCK(avg)
tCK(avg)
pS
pS
pS
pS
tCK(avg)
12
14,36
14,37
16,27,29,
41,42,44
17,27,29,
41,42,44
16,27,29,
41,42,44
17,27,29,
41,42,44
tHZ
Data-out high-impedance time from CLK/ CLK

tAC,max
pS
15,35
tLZ(DQS) _{DQS/ DQS -low-impedance time from CLK/ CLK}
tAC,min
tAC,max
pS
15,35
tLZ(DQ) _{DQ low-impedance time from CLK/ CLK}
tHP
Clock half pulse width
tQHS
tQH
tXSNR
tXSRD
tXP
tXARD
tXARDS
tAOND
tAON
Data hold skew factor
DQ/DQS output hold time from DQS
Exit Self Refresh to a non-Read command
Exit Self Refresh to a Read command
Exit precharge power down to any command
Exit active power down to Read command
Exit active power down to Read command
(slow exit, lower power)
ODT turn-on delay
ODT turn-on
tAONPD ODT turn-on (Power Down mode)
tAOFD
tAOF
tAOFPD
ODT turn-off delay
ODT turn-off
ODT turn-off (Power Down mode)
tANPD
tAXPD
tMRD
tMOD
tOIT
tDELAY
ODT to power down Entry Latency
ODT Power Down Exit Latency
Mode Register Set command cycle time
MRS command to ODT update delay
OCD Drive mode output delay
Minimum time clocks remain ON after CKE
asynchronously drops LOW
2 x tAC,min
Min. (tCH(abs),
tCL(abs))

tHP - tQHS
tRFC + 10
200
3
3
tAC,max

250





pS
15,35
pS
32
pS
33
pS
34
nS
23
nCK
nCK
nCK
18
10 - AL

nCK
18,19
2
2
nCK
20
tAC,min
tAC,max + 2.575
nS
20,35
tAC,min + 2
3 x tCK(avg) +
tAC,max+1
nS
2.5
2.5
nCK
21,39
tAC,min
tAC,max + 0.6
nS 21,38,39
tAC,min + 2
2.5 x tCK(avg) +
tAC,max + 1
nS
4

nCK
11
nCK
2

nCK
0
12
nS
23
0
12
nS
23
tIS+tCK(avg)+tIH

nS
22
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Publication Release Date: Dec. 03, 2012
Revision A03