Datasheet
Rev. 0.3 / Dec. 2009 19
1200pin Unbuffered DDR2 SDRAM SO-DIMMs
- continued -
Notes:
1. For details and notes, please refer to the relevant Hynix component datasheet(HY5PS1G8(16)31CFP).
2. 0°C ≤ T
CASE
≤ 85°C
3. 85°C < T
CASE
≤ 95°C
Parameter
Symbol
DDR2-667 DDR2-800
Unit Note
min max min max
CAS to CAS command delay tCCD 2 2 - tCK
Write recovery time tWR 15 - 15 - ns
Auto precharge write recovery + precharge
time
tDAL WR+tRP - WR+tRP - tCK
Internal write to read command delay tWTR 7.5 - 7.5 - ns
Internal read to precharge command delay tRTP 7.5 7.5 - ns
Exit self refresh to a non-read command tXSNR tRFC + 10 - tRFC + 10 - ns
Exit self refresh to a read command tXSRD 200 - 200 - tCK
Exit precharge power down to any non-
read command
tXP 2 - 2 - tCK
Exit active power down to read command tXARD 2 - 2 - tCK
Exit active power down to read command
(Slow exit, Lower power)
tXARDS 7 - AL - 8 - AL - tCK
CKE minimum pulse width
(high and low pulse width)
tCKE 3
- 3 -
tCK
ODT turn-on delay tAOND 2 2 2 2 tCK
ODT turn-on tAON tAC (min) tAC(max)+0.7 tAC (min) tAC(max)+0.7 ns
ODT turn-on (Power-Down mode) tAONPD tAC(min)+2
2tCK+
tAC(max)+1
tAC(min)+2
2tCK+
tAC(max)+1
ns
ODT turn-off delay tAOFD 2.5 2.5 2.5 2.5 tCK
ODT turn-off tAOF tAC (min)
tAC (max)+
0.6
tAC (min)
tAC (max)+
0.6
ns
ODT turn-off (Power-Down mode) tAOFPD tAC(min)+2
2.5tCK+
tAC(max)+1
tAC(min)+2
2.5tCK+
tAC(max)+1
ns
ODT to power down entry latency tANPD 3 - 3 - tCK
ODT power down exit latency tAXPD 8 8 tCK
OCD drive mode output delay tOIT 0 12 0 12 ns
Minimum time clocks remains ON after CKE
asynchronously drops LOW
tDelay tIS + tCK + tIH - tIS + tCK + tIH - ns
Average periodic Refresh Interval
tREFI
- 7.8 - 7.8 us 2
tREFI
- 3.9 - 3.9 us 3