參數(shù)資料
型號(hào): IBM11M2640H
廠商: IBM Microeletronics
英文描述: 2M x 64 DRAM Module(2M x 64 動(dòng)態(tài)RAM模塊)
中文描述: 200萬× 64內(nèi)存(2米× 64動(dòng)態(tài)內(nèi)存模塊)
文件頁數(shù): 11/26頁
文件大?。?/td> 480K
代理商: IBM11M2640H
IBM11M2640H
IBM11M2640HB
2M x 64 DRAM MODULE
64G1559
SA14-4612-04
Revised 5/96
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 11 of 26
Refresh Cycle
Symbol
Parameter
-60
-70
Unit
Notes
Min
Max
Min
Max
t
CHR
CAS Hold Time
(CAS before RAS Refresh Cycle)
8
8
ns
t
CSR
CAS Setup Time
(CAS before RAS Refresh Cycle)
14
14
ns
t
WRP
WE Setup Time
(CAS before RAS Refresh Cycle)
15
15
ns
t
WRH
WE Hold Time
(CAS before RAS Refresh Cycle)
8
8
ns
t
RPC
RAS Precharge to CAS Hold Time
3
3
ns
t
REF
Refresh Period
32
32
ms
1
1. 2048 refreshes are required every 32ms.
Presence Detect Read Cycle
Symbol
Parameter
-60
-70
Unit
Notes
Min
Max
Min
Max
t
PD
PDE to Valid Presence Detect Data
10
10
ns
1
t
PDOFF
PDE Inactive to Presence Detects Inactive
0
10
0
10
ns
2
1. Measured with the specified current load and 100pF.
2. t
PDOFF
(max) defines the time at which the output achieves the open circuit condition and is not referenced to output voltage levels.
Discontinued (9/98 - last order; 3/99 last ship)
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