參數(shù)資料
型號: EDS5108ABTA
廠商: Elpida Memory, Inc.
英文描述: 512M bits SDRAM
中文描述: 512M比特內(nèi)存
文件頁數(shù): 6/52頁
文件大?。?/td> 564K
代理商: EDS5108ABTA
EDS5104ABTA, EDS5108ABTA, EDS5116ABTA
Preliminary Data Sheet E0250E10 (Ver. 1.0)
6
Pin Capacitance (TA = 25°C, VDD, VDDQ = 3.3V ± 0.3V)
Parameter
Symbol
Pins
min.
Typ
max.
Unit
Notes
Input capacitance
CI1
CLK
Address, CKE, /CS, /RAS,
/CAS, /WE, DQM,
DQ
2.5
3.5
pF
1, 2, 4
CI2
2.5
3.8
pF
1, 2, 4
Data input/output capacitance
CI/O
4
6.5
pF
1, 2, 3, 4
Notes: 1. Capacitance measured with Boonton Meter or effective capacitance measuring method.
2. Measurement condition: f = 1MHz, 1.4V bias, 200mV swing.
3. DQM = VIH to disable DOUT.
4. This parameter is sampled and not 100% tested.
AC Characteristics (TA = 0 to +70
°
C, VDD, VDDQ = 3.3V ± 0.3V, VSS, VSSQ = 0V)
-6B
-7A
-75
Parameter
Symbol min.
max.
min.
max.
min.
max.
Unit Notes
System clock cycle time
tCK
6.0
7.5
7.5
ns
1
CLK high pulse width
tCH
2.5
2.5
2.5
ns
1
CLK low pulse width
tCL
2.5
2.5
2.5
ns
1
Access time from CLK
tAC
5.0
5.4
5.4
ns
1, 2
Data-out hold time
tOH
2.5
3.0
3.0
ns
1, 2
CLK to Data-out low impedance
tLZ
1
1
1
ns
1, 2, 3
CLK to Data-out high impedance
tHZ
5.4
5.4
5.4
ns
1, 4
Input setup time
tSI
1.5
1.5
1.5
ns
1
Input hold time
Ref/Active to Ref/Active command
period
Active to Precharge command
period
Active command to column
command (same bank)
Precharge to active command
period
Write recovery or data-in to
precharge lead time
tHI
0.8
0.8
0.8
ns
1
tRC
60
60
67.5
ns
1
tRAS
42
120000
45
120000
45
120000
ns
1
tRCD
18
15
20
ns
1
tRP
18
15
20
ns
1
tDPL
12
15
15
ns
1
Last data into active latency
tDAL
2CLK +
18ns
2CLK +
15ns
2CLK +
20ns
Active (a) to Active (b) command
period
Transition time (rise and fall)
Refresh period
(8192 refresh cycles)
Notes: 1. AC measurement assumes tT = 0.5ns. Reference level for timing of input signals is 1.4V.
2. Access time is measured at 1.4V. Load condition is CL = 50pF.
3. tLZ (min.) defines the time at which the outputs achieves the low impedance state.
4. tHZ (max.) defines the time at which the outputs achieves the high impedance state.
tRRD
12
15
15
ns
1
tT
0.5
5
0.5
5
0.5
5
ns
tREF
64
64
64
ms
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