参数资料
型号: V58C2128164SBLS7
厂商: PROMOS TECHNOLOGIES INC
元件分类: DRAM
英文描述: 8M X 16 DDR DRAM, 0.75 ns, PBGA60
封装: MO-233, FBGA-60
文件页数: 15/62页
文件大小: 977K
代理商: V58C2128164SBLS7
22
V58C2128(804/404/164)SB Rev. 1.1 March 2004
ProMOS TECHNOLOGIES
V58C2128(804/404/164)SB
Precharge Timing During Write Operation
Precharge timing for Write operations in DRAMs requires enough time to satisfy the write recovery require-
ment. This is the time required by a DRAM sense amp to fully store the voltage level. For DDR SDRAMs, a
timing parameter (t
WR) is used to indicate the required amount of time between the last valid write operation
and a Precharge command to the same bank.
The “write recovery” operation begins on the rising clock edge after the last DQS edge that is used to strobe
in the last valid write data. “Write recovery” is complete on the next 2nd rising clock edge that is used to strobe
in the Precharge command.
Write with Precharge Timing
(CAS Latency = Any; Burst Length = 4)
T0
T1
T2
T3
T4
T5
T6
T7
T8
D0
D1
D2
D3
NOP
Write
NOP
PreA
NOP
CK, CK
Command
DQS
DQ
tRAS(min)
tRP(min)
BA
NOP
T9
T10
tWR
D0
D1
D2
D3
DQS
DQ
tWR
BA
相关PDF资料
PDF描述
V58C2128404SCLJ5 32M X 4 DDR DRAM, 0.65 ns, PBGA60
V58C2256324SAH-36 8M X 32 DDR DRAM, 0.55 ns, PBGA144
V58C2256404SBJ5 64M X 4 DDR DRAM, 0.65 ns, PBGA60
V58C2256164SBLJ5B 16M X 16 DDR DRAM, 0.65 ns, PBGA60
V58C2256404SCLS7I 64M X 4 DDR DRAM, 0.75 ns, PBGA60
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