EBE21EE8ABFA
-8E
800
min.
-6E
667
min.
Frequency (Mbps)
Parameter
Symbol
tDAL
max.
max.
Unit
tCK
Notes
1
Auto precharge write recovery + precharge
time
(tWR/tCK) +
(tRP/tCK)
(tWR/tCK)+
(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
Exit self refresh to a read command
tXSNR
tRFC + 10
200
tRFC + 10
200
ns
tXSRD
tXP
tCK
Exit precharge power down to any non-read
command
2
2
tCK
tCK
tCK
Exit active power down to read command
tXARD
tXARDS
2
2
3
Exit active power down to read command
(slow exit/low power mode)
8 − AL
7 − AL
2, 3
CKE minimum pulse width (high and low
pulse width)
tCKE
3
3
tCK
Output impedance test driver delay
MRS command to ODT update delay
tOIT
0
0
12
12
0
0
12
12
ns
ns
tMOD
Auto refresh to active/auto refresh
command time
tRFC
127.5
127.5
ns
Average periodic refresh interval
(0°C ≤ TC ≤ +85°C)
tREFI
7.8
3.9
7.8
3.9
µs
µs
ns
(+85°C < TC ≤ +95°C)
tREFI
Minimum time clocks remains ON after CKE
asynchronously drops low
tIS + tCK +
tIH
tIS + tCK +
tIH
tDELAY
Preliminary Data Sheet E0907E10 (Ver. 1.0)
19
ELPIDA [ ELPIDA MEMORY ]
