參數(shù)資料
型號: IS42S16128-10T
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: DRAM
英文描述: 128K Words x 16 Bits x 2 Banks (4-MBIT) SYNCHRONOUS DYNAMIC RAM
中文描述: 256K X 16 SYNCHRONOUS DRAM, 10 ns, PDSO50
封裝: 0.400 INCH, TSOP2-50
文件頁數(shù): 23/75頁
文件大?。?/td> 638K
代理商: IS42S16128-10T
IS42S16128
ISSI
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. A
03/13/00
23
Read With Auto-Precharge
The read with auto-precharge command first executes a
burst read operation and then puts the selected bank in
the precharged state automatically. After the precharge
completes, the bank goes to the idle state. Thus this
command performs a read command and a precharge
command in a single operation.
During this operation, the delay period (t
PQL
) between the
last burst data output and the start of the precharge
operation differs depending on the
CAS
latency setting.
When the
CAS
latency setting is one, the precharge
operation starts a the same time as the last burst data is
output (t
PQL
= 0). When the
CAS
latency setting is two,
the precharge operation starts on one clock cycle before
the last burst data is output (t
PQL
=
1). When the
CAS
latency setting is three, the precharge operation starts on
two clock cycles before the last burst data is output
(t
PQL
=
2). Therefore, the selected bank can be made
active after a delay of t
RP
from the start position of this
precharge operation.
The selected bank must be set to the active state before
executing this command.
The auto-precharge function is invalid if the burst length
is set to full page.
COMMAND
I/O
CLK
COMMAND
I/O
CLK
READA 0
ACT 0
t
RP
t
RP
PRECHARGE START
READ WITH AUTO-PRECHARGE
(BANK 0)
t
PQL
t
PQL
READA 0
ACT 0
PRECHARGE START
READ WITH AUTO-PRECHARGE
(BANK 0)
D
OUT
0
D
OUT
1
D
OUT
2
D
OUT
3
D
OUT
0
D
OUT
1
D
OUT
2
D
OUT
3
CAS
latency = 2, burst length = 4
CAS
latency = 3, burst length = 4
CAS
Latency
t
PQL
3
2
2
1
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相關代理商/技術參數(shù)
參數(shù)描述
IS42S16128-12T 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:128K Words x 16 Bits x 2 Banks (4-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42S16128-8T 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:128K Words x 16 Bits x 2 Banks (4-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42S16160A-6T 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:256 Mb Synchronous DRAM
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IS42S16160A-7T 制造商:Integrated Silicon Solution Inc 功能描述: