參數(shù)資料
型號(hào)： IS42S32400B-7B
廠商： INTEGRATED SILICON SOLUTION INC
元件分類： DRAM
英文描述： 4Meg x 32 128-MBIT SYNCHRONOUS DRAM
中文描述： 4M X 32 SYNCHRONOUS DRAM, 5.4 ns, PBGA90
封裝： FBGA-90
文件頁(yè)數(shù)： 23/60頁(yè)
文件大小： 644K
代理商： IS42S32400B-7B
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
PRELIMINARY INFORMATION
Rev. 00G
06/15/06
23
ISSI
IS42S32400B
REGISTER DEFINITION
Mode Register
The mode register is used to define the specific mode of
operation of the SDRAM. This definition includes the
selection of a burst length, a burst type, a CAS latency, an
operating mode and a write burst mode, as shown in MODE
REGISTER DEFINITION.
The mode register is programmed via the LOAD MODE
REGISTER command and will retain the stored information
until it is programmed again or the device loses power.
Mode register bits M0-M2 specify the burst length, M3
specifies the type of burst
(sequential or interleaved)
, M4- M6
specify the CAS latency, M7 and M8 specify the operating
mode, M9 specifies the WRITE burst mode, and M10 and
M11 are reserved for future use.
The mode register must be loaded when all banks are idle,
and the controller must wait the specified time before
initiating the subsequent operation. Violating either of these
requirements will result in unspecified operation.
MODE REGISTER DEFINITION
Latency Mode
M6 M5 M4
0
0
0
0
1
1
1
1
CAS Latency
Reserved
Reserved
2
3
Reserved
Reserved
Reserved
Reserved
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1. To ensure compatibility with future devices,
should program BA1, BA0, A11, A10 = "0"
Write Burst Mode
M9
Mode
Programmed Burst Length
Single Location Access
0
1
Operating Mode
M8 M7
0
— —
M6-M0
Defined
—
Mode
Standard Operation
All Other States Reserved
0
Burst Type
M3
Type
0
1
Sequential
Interleaved
Burst Length
M2 M1 M0
0
0
0
0
1
1
1
1
M3=0
1
2
4
8
Reserved Reserved
Reserved Reserved
Reserved Reserved
Full Page
M3=1
1
2
4
8
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Reserved
Reserved
Address Bus
Mode Register (Mx)
(1)
BA1 BA A11 A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
相關(guān)PDF資料
PDF描述
IS42S32400B-7BI 4Meg x 32 128-MBIT SYNCHRONOUS DRAM
IS42S32400B-7BL 4Meg x 32 128-MBIT SYNCHRONOUS DRAM
IS42S32400B-7BLI 4Meg x 32 128-MBIT SYNCHRONOUS DRAM
IS42S32400B-7T 4Meg x 32 128-MBIT SYNCHRONOUS DRAM
IS42S32400B-7TI 4Meg x 32 128-MBIT SYNCHRONOUS DRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IS42S32400B-7BI 制造商:Integrated Silicon Solution Inc 功能描述:IC SDRAM 128MBIT 143MHZ 90FBGA
IS42S32400B-7BI-TR 制造商:Integrated Silicon Solution Inc 功能描述:IC SDRAM 128MBIT 143MHZ 90FBGA
IS42S32400B-7BL 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 128M (4Mx32) 143MHz Commercial Temp RoHS:否 制造商:ISSI 數(shù)據(jù)總線寬度:16 bit 組織:1 M x 16 封裝 / 箱體:SOJ-42 存儲(chǔ)容量:16 MB 最大時(shí)鐘頻率: 訪問(wèn)時(shí)間:50 ns 電源電壓-最大:7 V 電源電壓-最小:- 1 V 最大工作電流:90 mA 最大工作溫度:+ 85 C 封裝:Tube
IS42S32400B-7BLI 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 128M (4Mx32) 143MHz Industrial Temp RoHS:否 制造商:ISSI 數(shù)據(jù)總線寬度:16 bit 組織:1 M x 16 封裝 / 箱體:SOJ-42 存儲(chǔ)容量:16 MB 最大時(shí)鐘頻率: 訪問(wèn)時(shí)間:50 ns 電源電壓-最大:7 V 電源電壓-最小:- 1 V 最大工作電流:90 mA 最大工作溫度:+ 85 C 封裝:Tube
IS42S32400B-7BLI-TR 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 128M (4Mx32) 143MHz Industrial Temp RoHS:否 制造商:ISSI 數(shù)據(jù)總線寬度:16 bit 組織:1 M x 16 封裝 / 箱體:SOJ-42 存儲(chǔ)容量:16 MB 最大時(shí)鐘頻率: 訪問(wèn)時(shí)間:50 ns 電源電壓-最大:7 V 電源電壓-最小:- 1 V 最大工作電流:90 mA 最大工作溫度:+ 85 C 封裝:Tube
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