參數(shù)資料
型號(hào)： 72SD3232RPFE
廠商： MAXWELL TECHNOLOGIES
元件分類： DRAM
英文描述： 1 Gbit SDRAM 32-Meg X 32-Bit X 4-Banks
中文描述： 32M X 32 SYNCHRONOUS DRAM, 6 ns, DFP72
封裝： STACK, DFP-72
文件頁(yè)數(shù)： 16/41頁(yè)
文件大?。?/td> 596K
代理商： 72SD3232RPFE
72SD3232
M
16
All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved.
1 Gbit(32-Meg X 32-Bit X 4-Banks) SDRAM
02.04.05 Rev 3
To [ACTV]:
This command makes the other bank active. ( However, an interval of t
RRD
is required.)
Attempting to make the currently active bank active results in an illegal command.
To [PRE], [PALL]:
These commands set the SDRAMto precharge mode. (However, an interval of t
RAS
is
required.)
From READ state, command operation
To [DESL], [NOP]:
These commands continue read operations until the operation is completed.
To [READ], [READ A]:
Data output by the previous read command continues to be output. After CAS
latency, the data output resulting fromthe next command will start.
To [WRIT], [WRIT A]:
These commands stop a burst read, and start a write cycle.
To [ACTV]:
This command makes other banks bank active. (However, an interval of t
RRD
is required.)
Attempting to make the currently active bank active results in an illegal command.
To [PRE], [PALL]:
These commands stop a burst read, and the SDRAMenters precharge mode.
From READ with AUTO-PRECHARGE state, command operation
To [DESL], [NOP]:
These commands continue read operations until the burst operation is completed, and
the SDRAMthen enters precharge mode.
To [ACTV]:
This command makes other banks active. (However, an interval of t
RRD
is required.) Attempting
to make the currently active bank active results in an illegal command.
From WRITE state, command operation
To [DESL], [NOP]:
These commands continue write operations until the burst operation is completed.
To [READ], [READ A]:
These commands stop a burst and start a read cycle.
To [WRIT], [WRIT A]:
These commands stop a burst and start the next write cycle.
To [ACTV]:
This command makes the other bank active. (However, an interval of t
RRD
is required.)
Attempting to make the currently active bank active results in an illegal command.
To [PRE], [PALL]:
These commands stop burst write and the SDRAM then enters precharge mode.
From WRITE with AUTO-PRECHARGE state, command operation
To [DESL], [NOP]:
These commands continue write operations until the burst is completed, and the
synchronous DRAMenters precharge mode.
To [ACTV]:
This command makes the other bank active. (However, an interval of t
RRD
is required.)
Attempting to make the currently active bank active result in an illegal command.
From REFRESH state, command operation
To [DESL], [NOP]:
After an auto-refresh cycle (after t
RC
) the SDRAMautomatically enters the IDLE state.
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