參數(shù)資料
型號: EDE2104ABSE-5C-E
廠商: ELPIDA MEMORY INC
元件分類: DRAM
英文描述: 2G bits DDR2 SDRAM
中文描述: 512M X 4 DDR DRAM, 0.5 ns, PBGA68
封裝: ROHS COMPLIANT, FBGA-68
文件頁數(shù): 17/81頁
文件大小: 604K
代理商: EDE2104ABSE-5C-E
EDE2104ABSE, EDE2108ABSE
Preliminary Data Sheet E1196E10 (Ver. 1.0)
17
-5C
Speed bin
DDR2-533 (4-4-4)
Parameter
Symbol
min.
max.
Unit
Notes
Active bank A to active bank B command period
tRRD
7.5
ns
Four active window period
tFAW
37.5
ns
/CAS to /CAS command delay
tCCD
2
tCK
Write recovery time
tWR
15
WR +
RU(tRP/tCK)
7.5
ns
Auto precharge write recovery + precharge time
tDAL
tCK
1, 9
Internal write to read command delay
tWTR
ns
Internal read to precharge command delay
tRTP
7.5
ns
Exit self-refresh to a non-read command
tXSNR
tRFC + 10
ns
Exit self-refresh to a read command
tXSRD
200
tCK
Exit precharge power-down to any non-read command
tXP
2
tCK
Exit active power-down to read command
Exit active power-down to read command
(slow exit/low power mode)
CKE minimum pulse width (high and low pulse width)
tXARD
2
tCK
3
tXARDS
6
AL
tCK
2, 3
tCKE
3
tCK
Output impedance test driver delay
tOIT
0
12
ns
MRS command to ODT update delay
t
MOD
0
12
ns
Auto-refresh to active/auto-refresh command time
Average periodic refresh interval
(0
°
C
TC
+85
°
C)
(+85
°
C
<
TC
+95
°
C)
Minimum time clocks remains ON after CKE
asynchronously drops low
Notes: 1. For each of the terms above, if not already an integer, round to the next higher integer.
2. AL: Additive Latency.
3. MRS A12 bit defines which active power-down exit timing to be applied.
4. The figures of Input Waveform Timing 1 and 2 are referenced from the input signal crossing at the
VIH(AC) level for a rising signal and VIL(AC) for a falling signal applied to the device under test.
5. The figures of Input Waveform Timing 1 and 2 are referenced from the input signal crossing at the
VIL(DC) level for a rising signal and VIH(DC) for a falling signal applied to the device under test.
tRFC
195
ns
tREFI
7.8
μ
s
tREFI
3.9
μ
s
tDELAY
tIS + tCK + tIH
ns
DQS
/DQS
tDS
tDH
tDS
tDH
VDDQ
VIH (AC)(min.)
VIH (DC)(min.)
VREF
VIL (DC)(max.)
VIL (AC)(max.)
VSS
CK
/CK
tIS
tIH
tIS
tIH
VDDQ
VIH (AC)(min.)
VIH (DC)(min.)
VREF
VIL (DC)(max.)
VIL (AC)(max.)
VSS
Input Waveform Timing 1 (tDS, tDH)
Input Waveform Timing 2 (tIS, tIH)
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