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参数资料
| 型号： | M374S6553BTS-C7A |
| 厂商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | SDRAM Unbuffered Module 168pin Unbuffered Module based on 512Mb B-die 62/72-bit Non ECC/ECC |
| 中文描述： | 内存缓冲模块168线缓冲模块基于512Mb乙芯片62/72-bit非ECC / ECC的 |
| 文件页数： | 7/22页 |
| 文件大小： | 379K |
| 代理商： | M374S6553BTS-C7A |
256MB, 512MB, 1GB Unbuffered DIMM
Rev. 1.1 February 2004
SDRAM
3.3V
1200
870
Output
50pF
VOH (DC) = 2.4V, IOH = -2mA
VOL (DC) = 0.4V, IOL = 2mA
Vtt = 1.4V
50
Output
50pF
Z0 = 50
(Fig. 2) AC output load circuit
(Fig. 1) DC output load circuit
AC OPERATING TEST CONDITIONS (VDD = 3.3V ± 0.3V, TA = 0 to 70°C)
Parameter
Value
Unit
AC input levels (Vih/Vil)
2.4/0.4
V
Input timing measurement reference level
1.4
V
Input rise and fall time
tr/tf = 1/1
ns
Output timing measurement reference level
1.4
V
Output load condition
See Fig. 2
OPERATING AC PARAMETER
Notes :
(AC operating conditions unless otherwise noted)
Parameter
Symbol
Version
Unit
Note
7A
Row active to row active delay
tRRD(min)
15
ns
1
RAS to CAS delay
tRCD(min)
20
ns
1
Row precharge time
tRP(min)
20
ns
1
Row active time
tRAS(min)
45
ns
1
tRAS(max)
100
us
Row cycle time
tRC(min)
65
ns
1
Last data in to row precharge
tRDL(min)
2
CLK
2
Last data in to Active delay
tDAL(min)
2 CLK + tRP
-
Last data in to new col. address delay
tCDL(min)
1
CLK
2
Last data in to burst stop
tBDL(min)
1
CLK
2
Col. address to col. address delay
tCCD(min)
1
CLK
3
Number of valid output data
CAS latency=3
2
ea
4
CAS latency=2
1
1. The minimum number of clock cycles is determined by dividing the minimum time required with clock cycle time
and then rounding off to the next higher integer.
2. Minimum delay is required to complete write.
3. All parts allow every cycle column address change.
4. In case of row precharge interrupt, auto precharge and read burst stop.
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