HY5PS12421FP Datasheet, PDF (21/35 Pages) Hynix Semiconductor – 512Mb DDR2 SDRAM

1HY5PS12421FP
HY5PS12821FP
HY5PS121621FP
Parameter
Four Active Window for 2KB page size products
CAS to CAS command delay
Write recovery time
Auto precharge write recovery + precharge time
Internal write to read command delay
Internal read to precharge command delay
Exit self refresh to a non-read command
Exit self refresh to a read command
Exit precharge power down to any non-read
command
Exit active power down to read command
Exit active power down to read command
(Slow exit, Lower power)
CKE minimum pulse width
(high and low pulse width)
ODT turn-on delay
ODT turn-on
ODT turn-on(Power-Down mode)
ODT turn-off delay
ODT turn-off
ODT turn-off (Power-Down mode)
ODT to power down entry latency
ODT power down exit latency
OCD drive mode output delay
Minimum time clocks remains ON after CKE
asynchronously drops LOW
Symbol
tFAW
tCCD
tWR
tDAL
tWTR
tRTP
tXSNR
tXSRD
tXP
DDR2-400
min
max
50
-
2
15
-
WR+tRP*
-
10
-
7.5
tRFC + 10
200
-
2
-
-Continued
DDR2-533
min
max
50
-
2
15
-
WR+tRP*
-
7.5
-
7.5
tRFC + 10
200
-
Unit
Note
tCK
ns
tCK
14
ns
24
ns
3
ns
tCK
2
-
tCK
tXARD
tXARDS
2
6 - AL
2
6 - AL
tCK
1
tCK
1, 2
t_CKE
3
3
tCK
t_AOND
2
2
2
2
tCK
t_AON
tAC(min)
tAC(max)+1
tAC(min)
tAC(max)+
1
ns
16
2tCK+
2tCK+
t_AONPD
tAC(min)+2
tAC(max)
tAC(min)+2 tAC(max)+
ns
+1
1
t_AOFD
2.5
2.5
2.5
2.5
tCK
t_AOF
tAC(min)
tAC(max)+
0.6
tAC(min)
tAC(max)+
0.6
ns
17
t_AOFPD
tAC(min)+2
2.5tCK+tAC
(max)+1
tAC(min)+2
2.5tCK+tA
C(max)+1
ns
tANPD
3
3
tCK
tAXPD
8
8
tCK
tOIT
0
12
0
12
ns
tDelay
tIS+tCK+tIH
tIS+tCK+tIH
ns
15
Rev. 1.0 / Feb. 2005
21