HYB18T256400AF Datasheet, PDF (79/90 Pages) Infineon Technologies AG – 256 Mbi t DDR2 SDRAM

HYB18T256400/800/160AF
256Mb DDR2 SDRAM
7.3 ODT AC Electrical Characteristics and Operating Conditions (all speed bins)
Symbol Parameter / Condition
tAOND ODT turn-on delay
tAON ODT turn-on
-400 & -533
-667
tAONPD ODT turn-on (Power-Down Modes)
tAOFD ODT turn-off delay
tAOF ODT turn-off
tAOFPD ODT turn-off (Power-Down Modes)
tANPD ODT to Power Down Mode Entry Latency
tAXPD ODT Power Down Exit Latency
min.
2
tAC(min)
tAC(min)
tAC(min) + 2 ns
2.5
tAC(min)
tAC(min) + 2 ns
3
8
max.
2
tAC(max) + 1 ns
tAC(max) + 0.7 ns
2 tCK + tAC(max) + 1 ns
2.5
tAC(max) + 0.6 ns
2.5 tCK + tAC(max) + 1 ns
-
-
Units Notes
tCK
ns
20
ns
tCK
ns
21
ns
tCK
tCK
Page 79
Rev. 1.02 May 2004
INFINEON Technologies