參數(shù)資料
型號(hào): IS42S32800B-7T
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: DRAM
英文描述: 2M Words x 32 Bits x 4 Banks (256-MBIT) SYNCHRONOUS DYNAMIC RAM
中文描述: 8M X 32 SYNCHRONOUS DRAM, 5.5 ns, PDSO86
封裝: 0.400 INCH, 0.50 MM PITCH, TSOP2-86
文件頁(yè)數(shù): 28/62頁(yè)
文件大?。?/td> 939K
代理商: IS42S32800B-7T
28
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev.
B
0
5/24
/06
ISSI
IS42S32800B
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(guān)PDF資料
PDF描述
IS42S32800B-7TI 2M Words x 32 Bits x 4 Banks (256-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42S32800B-7TL 2M Words x 32 Bits x 4 Banks (256-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42S32800B-7TLI 2M Words x 32 Bits x 4 Banks (256-MBIT) SYNCHRONOUS DYNAMIC RAM
IS42S83200A 256 Mb Synchronous DRAM
IS42S83200A-75T 256 Mb Synchronous DRAM
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IS42S32800B-7TI 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 256M 8Mx32 143Mhz 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
IS42S32800B-7TI-TR 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 256M 8Mx32 143Mhz 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
IS42S32800B7TL 制造商:Integrated Silicon Solution Inc 功能描述:
IS42S32800B-7TL 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 256M 8Mx32 143Mhz 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
IS42S32800B-7TLI 功能描述:動(dòng)態(tài)隨機(jī)存取存儲(chǔ)器 256M 8Mx32 143Mhz 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