參數(shù)資料
型號: IC42S32800-7BI
英文描述: 2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
中文描述: 200萬× 32位× 4個銀行(256兆)內(nèi)存
文件頁數(shù): 28/62頁
文件大?。?/td> 879K
代理商: IC42S32800-7BI
IC42S32800
IC42S32800L
28
Integrated Circuit Solution Inc.
DR046-0B 12/21/2004
Figure 5.Self Refresh Entry &Exit Cycle
Note:To Enter SelfRefresh Mode
1. CS#,RAS#&CAS#with CKE should be low at the same clock cycle.
2. After 1 clock cycle,all the inputs including the system clock can be don ’t care except for CKE.
3. The device remains in SelfRefresh mode as long as CKE stays “l(fā)ow”.
Once the device enters SelfRefresh mode,minimum tRAS is required before exit from SelfRefresh.
To Exit SelfRefresh Mode
1. System clock restart and be stable before returning CKE high.
2. Enable CKE and CKE should be set high for minimum time of tSRX.
3. CS#starts from high.
4. Minimum tRC is required after CKE going high to complete SelfRefresh exit.
5. 2048 cycles of burst AutoRefresh is required before SelfRefresh entry and after SelfRefresh exit if the system uses burst refresh.
CLK
CKE
CS#
RAS#
CAS#
BS0,1
A0-A9
WE#
DQM
DQ
*Note 1
*Note 2
t
IS
*Note 3
*Note 4
t
RC(min)
*Note 7
*Note 5
*Note 6
*Note 8
*Note 8
Hi-Z
Hi-Z
SelfRefresh Enter
SelfRefresh Exit
Auto Refresh
SRX
t
PDE
T0
T2
T1
T3
T4
T5
T6
T7
T9
T8
T12
T11
T10
T14
T13
T15
T16
T17
T18
T19
相關PDF資料
PDF描述
IC42S32800-7BIG 2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7T 2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7TG 2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7TI 2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7TIG 2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
相關代理商/技術參數(shù)
參數(shù)描述
IC42S32800-7BIG 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7T 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7TG 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7TI 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:2M x 32 Bit x 4 Banks (256-MBIT) SDRAM
IC42S32800-7TIG 制造商:ICSI 制造商全稱:Integrated Circuit Solution Inc 功能描述:2M x 32 Bit x 4 Banks (256-MBIT) SDRAM