EDD51163DBH-5BLS-F ELPIDA [Elpida Memory], EDD51163DBH-5BLS-F Datasheet - Page 9

• Manufacturer Part Number: EDD51163DBH-5BLS-F
• Manufacturer: ELPIDA [Elpida Memory]

Parameter
Autoprecharge write recovery and
precharge time
Self-refresh exit period
Internal Write to Read command delay
Average periodic refresh interval
Notes: 1. On all AC measurements, we assume the test conditions shown in “Test conditions” and full driver
Preliminary Data Sheet E1433E30 (Ver. 3.0)
2. This parameter defines the signal transition delay from the cross point of CK and /CK. The signal
3. The timing reference level is VDDQ/2.
4. Output valid window is defined to be the period between two successive transition of data out signals.
5. tHZ is defined as DOUT transition delay from low-Z to high-Z at the end of read burst operation. The
6. tLZ is defined as DOUT transition delay from high-Z to low-Z at the beginning of read operation. This
7. The transition from low-Z to high-Z is defined to occur when the device output stops driving. A specific
8. tAC, tDQSCK, tHZ and tLZ are specified with 15pF bus loading conditio
9. Minimum 3 clocks of tDAL (= tWR + tRP) is required because it need minimum 2 clocks for tWR and
strength is assumed for the output load, that is both A6 and A5 of EMRS is set to be “L”.
transition is defined to occur when the signal level crossing VDDQ/2.
The signal transition is defined to occur when the signal level crossing VDDQ/2.
timing reference is cross point of CK and /CK. This parameter is not referred to a specific DOUT voltage
level, but specify when the device output stops driving.
parameter is not referred to a specific DOUT voltage level, but specify when the device output begins
driving.
reference voltage to judge this transition is not given.
minimum 1 clock for tRP.
tDAL = (tWR/tCK) + (tRP/tCK): for each of the terms above, if not already an integer, round to the next
higher integer.
Symbol
tDAL
tSREX
tWTR
tREF
-5BLS
min.
—
120
2
—
9
max.
—
—
—
7.8
-6ELS
min.
—
120
1
—
n.
EDD51163DBH-LS
max.
—
—
—
7.8
Unit
tCK
ns
µs
Notes
9