HY5PS12421CFP-E3 Datasheet, PDF (23/38 Pages) Hynix Semiconductor – 512Mb DDR2 SDRAM

1HY5PS12421C(L)FP
1HY5PS12821C(L)FP
1HY5PS121621C(L)FP
Parameter
DQ output access time from CK/CK
DQS output access time from CK/CK
CK high-level width
CK low-level width
CK half period
Clock cycle time, CL=x
Symbol
tAC
tDQSCK
tCH
tCL
tHP
tCK
DDR2-667
min
max
-450
+450
-400
+400
0.45
0.55
0.45
0.55
min(tCL,
-
tCH)
3000
8000
DQ and DM input setup time
tDS(base) 100
-
DQ and DM input hold time
tDH
(base)
Control & Address input pulse width for
tIPW
each input
DQ and DM input pulse width for each
tDIPW
input
Data-out high-impedance time from CK/
tHZ
CK
DQS low-impedance time from CK/CK tLZ(DQS)
DQ low-impedance time from CK/CK tLZ(DQ)
DQS-DQ skew for DQS and associated
tDQSQ
DQ signals
DQ hold skew factor
tQHS
DQ/DQS output hold time from DQS tQH
First DQS latching transition to
associated clock edge
tDQSS
DQS input high pulse width
tDQSH
DQS input low pulse width
tDQSL
DQS falling edge to CK setup time
tDSS
DQS falling edge hold time from CK
tDSH
Mode register set command cycle time tMRD
Write postamble
tWPST
Write preamble
tWPRE
175
0.6
0.35
-
tAC min
2*tAC min
-
-
tHP - tQHS
- 0.25
0.35
0.35
0.2
0.2
2
0.4
0.35
-
-
-
tAC max
tAC max
tAC max
240
340
-
+ 0.25
-
-
-
-
-
0.6
-
Address and control input setup time tIS(base)
200
-
Address and control input hold time
tIH(base)
275
Read preamble
tRPRE
0.9
Read postamble
tRPST
0.4
Activate to precharge command
tRAS
45
Active to active command period for 1KB
tRRD
7.5
page size products
Active to active command period for 2KB
tRRD
10
page size products
-
1.1
0.6
70000
-
-
DDR2-800
min
max
-400
+400
-350
+350
0.45
0.55
0.45
0.55
min(tCL,
-
tCH)
2500
50
-
125
-
0.6
-
0.35
-
-
tAC max
tAC min tAC max
2*tAC min tAC max
-
200
-
300
tHP - tQHS
-
- 0.25
+ 0.25
0.35
-
0.35
-
0.2
-
0.2
-
2
-
0.4
0.6
0.35
-
175
-
250
-
0.9
1.1
0.4
0.6
45
70000
7.5
-
10
-
Unit Note
ps
ps
tCK
tCK
ps 11,12
ps 15
6,7,8,2
ps
0
6,7,8,2
ps
1
tCK
tCK
ps 18
ps 18
ps 18
ps 13
ps 12
ps
tCK
tCK
tCK
tCK
tCK
tCK
tCK 10
tCK
5,7,9,2
ps
2
5,7,9,2
ps
3
tCK 19
tCK 19
ns
3
ns
4
ns
4
Rev. 0.8 / Oct. 2007
23