HYB 39S64400/800/160BT(L)
64-MBit Synchronous DRAM
AC Characteristics (cont’d)1, 2
TA = 0 to 70 °C; VSS = 0 V; VDD = 3.3 V ± 0.3 V, tT = 1 ns
Parameter
Symb.
Limit Values
Unit Note
-7.5
-8
min. max. min. max.
Refresh Period
(4096 cycles)
Self Refresh Exit Time
tREF
–
tSREX
1
64 –
–
1
64 ms –
–
CLK 6
Read Cycle
Data Out Hold Time
tOH
3
–
3
–
ns 2
Data Out to Low Impedance Time tLZ
1
–
0
–
ns –
Data Out to High Impedance Time tHZ
3
7
3
8
ns –
DQM Data Out Disable Latency
tDQZ
–
2
–
2
CLK –
Write Cycle
Write Recovery Time
DQM Write Mask Latency
tWR
2
–
2
–
CLK –
tDQW
0
–
0
–
CLK –
Data Book
18
12.99