參數(shù)資料
型號(hào): EBD11ED8ADFB-5
廠商: Elpida Memory, Inc.
英文描述: 1GB Unbuffered DDR SDRAM DIMM (128M words x72 bits, 2 Ranks)
中文描述: 1GB的無(wú)緩沖DDR SDRAM的內(nèi)存(128M的話x72位,2個(gè)等級(jí))
文件頁(yè)數(shù): 12/19頁(yè)
文件大小: 209K
代理商: EBD11ED8ADFB-5
EBD11ED8ABFB
Preliminary Data Sheet E0295E20 (Ver. 2.0)
12
AC Characteristics (TA = 0 to +70
°
C, VDD, VDDQ = 2.5V ± 0.2V, VSS = 0V)
(DDR SDRAM Device Specification)
-6B
-7A
-7B
Parameter
Symbol
min.
max.
min.
max
min.
max
Unit Notes
Clock cycle time
(CL = 2)
tCK
7.5
12
7.5
12
10
12
ns
10
(CL = 2.5)
tCK
6
12
7.5
12
7.5
12
ns
CK high-level width
tCH
0.45
0.55
0.45
0.55
0.45
0.55
tCK
CK low-level width
tCL
0.45
0.55
0.45
0.55
0.45
0.55
tCK
CK half period
tHP
min
(tCH, tCL)
min
(tCH, tCL)
min
(tCH, tCL)
tCK
DQ output access time from
CK, /CK
DQS output access time from
CK, /CK
DQS to DQ skew
tAC
–0.7
0.7
–0.75
0.75
–0.75
0.75
ns
2, 11
tDQSCK –0.6
0.6
–0.75
0.75
–0.75
0.75
ns
2, 11
tDQSQ
0.45
0.5
0.5
ns
3
DQ/DQS output hold time
from DQS
tQH
tHP – tQHS —
tHP – tQHS —
tHP – tQHS —
ns
Data hold skew factor
tQHS
0.55
0.75
0.75
ns
Data-out high-impedance
time from CK, /CK
Data-out low-impedance time
from CK, /CK
tHZ
–0.7
0.7
–0.75
0.75
–0.75
0.75
ns
5, 11
tLZ
–0.7
0.7
–0.75
0.75
–0.75
0.75
ns
6, 11
Read preamble
tRPRE
0.9
1.1
0.9
1.1
0.9
1.1
tCK
Read postamble
tRPST
0.4
0.6
0.4
0.6
0.4
0.6
tCK
DQ and DM input setup time tDS
0.45
0.5
0.5
ns
8
DQ and DM input hold time
tDH
0.45
0.5
0.5
ns
8
DQ and DM input pulse width tDIPW
1.75
1.75
1.75
ns
7
Write preamble setup time
tWPRES 0
0
0
ns
Write preamble
tWPRE
0.25
0.25
0.25
tCK
Write postamble
tWPST
0.4
0.6
0.4
0.6
0.4
0.6
tCK 9
Write command to first DQS
latching transition
DQS falling edge to CK setup
time
DQS falling edge hold time
from CK
tDQSS
0.75
1.25
0.75
1.25
0.75
1.25
tCK
tDSS
0.2
0.2
0.2
tCK
tDSH
0.2
0.2
0.2
tCK
DQS input high pulse width
tDQSH
0.35
0.35
0.35
tCK
DQS input low pulse width
tDQSL
0.35
0.35
0.35
tCK
Address and control input
setup time
Address and control input
hold time
Address and control input
pulse width
Mode register set command
cycle time
Active to Precharge
command period
Active to Active/Auto refresh
command period
tIS
0.75
0.9
0.9
ns
8
tIH
0.75
0.9
0.9
ns
8
tIPW
2.2
2.2
2.2
ns
7
tMRD
2
2
2
tCK
tRAS
42
120000
45
120000
45
120000
ns
tRC
60
67.5
67.5
ns
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EBD11ED8ADFB-5B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1GB Unbuffered DDR SDRAM DIMM (128M words x72 bits, 2 Ranks)
EBD11ED8ADFB-5C 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1GB Unbuffered DDR SDRAM DIMM (128M words x72 bits, 2 Ranks)
EBD11ED8ADFB-6B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1GB Unbuffered DDR SDRAM DIMM (128M words x72 bits, 2 Ranks)
EBD11ED8ADFB-7A 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:1GB Unbuffered DDR SDRAM DIMM (128M words x72 bits, 2 Ranks)
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