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参数资料
| 型号： | IS42S16400B-7T |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM |
| 中文描述： | 1梅格位× 16位× 4银行（64兆位）同步动态RAM |
| 文件页数： | 16/55页 |
| 文件大小： | 472K |
| 代理商： | IS42S16400B-7T |
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IS42S16400B
ISSI
16
Integrated Silicon Solution, Inc. — www.issi.com —
1-800-379-4774
Rev. D
02/10/05
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 and M9 to M13 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 M9-M13 = 0.
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
Full Page
M3=1
1
2
4
8
Reserved
Reserved
Reserved
Reserved
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Reserved
Address Bus
Mode Register (Mx)
BA1 BA0 A11 A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
(1)
相关PDF资料 |
PDF描述 |
|---|---|
| IS42S16400B-7TL | 1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM |
| IS4N45 | LOW INPUT CURRENT DARLINGTON OUTPUT OPTICALLY COUPLED ISOLATOR |
| IS4N46 | LOW INPUT CURRENT DARLINGTON OUTPUT OPTICALLY COUPLED ISOLATOR |
| IS6003 | OPTICALLY COUPLED BILATERAL SWITCH NON-ZERO CROSSING TRIAC |
| IS6005 | OPTICALLY COUPLED BILATERAL SWITCH NON-ZERO CROSSING TRIAC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IS42S16400B-7TI | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM |
| IS42S16400B-7TL | 制造商:Integrated Silicon Solution Inc 功能描述:64M, 3.3V SDRAM 4M X 16 143MHZ TSOP |
| IS42S16400B-7TLI | 制造商:Integrated Silicon Solution Inc 功能描述: |
| IS42S16400B-7TLI-TR | 制造商:Integrated Silicon Solution Inc 功能描述: |
| IS42S16400B-7TL-TR | 制造商:Integrated Silicon Solution Inc 功能描述: |
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