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參數(shù)資料
| 型號： | IBM11D8480BG |
| 廠商： | IBM Microeletronics |
| 英文描述： | 8M x 36 ECC-on-SIMM（single in-line memory module）(8M x 36 片上帶可兼容的糾錯代碼的單列動態(tài)RAM模塊) |
| 中文描述： | 8米× 36 ECC的問題，上海藥物研究所（單列直插式內(nèi)存模塊）（8米× 36片上帶可兼容的糾錯代碼的單列動態(tài)內(nèi)存模塊） |
| 文件頁數(shù)： | 7/18頁 |
| 文件大?。?/td> | 242K |
| 代理商： | IBM11D8480BG |
IBM11D8480BG
IBM11E8480BG
8M x 36 ECC-on-SIMM
26H2528
Revised 10/98
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 7 of 18
AC Characteristics
(T
C
= 0 to +65
°
C, V
CC
= 5.0
±
0.25V)
1. V
IH
(min) and V
IL
(max) are reference levels for measuring timing of input signals. Transition times are measured between V
IH
and
V
IL
.
2. An initial pause of 500ms is required after power-up followed by 8 RAS only refresh cycles before proper device operation is
achieved. In case of using internal refresh counter, a minimum of 8 CAS before RAS refresh cycles instead of 8 RAS only refresh
cycles is required. To prevent excess power dissipation during power-up, RAS should rise coincident with the power supply voltage.
3. AC measurements assume t
T
= 5ns.
Read, Write, and Refresh Cycles
(Common Parameters)
Symbol
Parameter
-70
Units
Notes
Min
Max
t
RC
Random Read or Write Cycle Time
130
—
ns
t
RP
RAS Precharge Time
50
—
ns
t
CP
CAS Precharge Time
10
—
ns
t
RAS
RAS Pulse Width
70
10K
ns
t
CAS
CAS Pulse Width
20
—
ns
t
ASR
Row Address Setup Time
0
—
ns
t
RAH
Row Address Hold Time
10
—
ns
t
ASC
Column Address Setup Time
0
—
ns
t
CAH
Column Address Hold Time
10
—
ns
t
RCD
RAS to CAS Delay Time
20
50
ns
1
t
RAD
RAS to Column Address Delay Time
15
35
ns
2
t
RSH
RAS Hold Time
20
—
ns
t
CSH
CAS Hold Time
70
—
ns
t
CRP
CAS to RAS Precharge Time
10
—
ns
t
DZC
CAS Delay Time from D
IN
0
—
ns
t
T
Transition Time (Rise and Fall)
3
30
ns
1. Operation within the t
RCD
(max) limit ensures that t
RAC
(max) can be met. t
RCD
(max) is specified as a reference point only: if t
RCD
is
greater than the specified t
RCD
(max) limit, then access time is controlled by t
CAC
.
2. Operation within the t
RAD
(max) limit ensures that t
RAC
(max) can be met. t
RAD
(max) is specified as a reference point only: If t
RAD
is greater than the specified t
RAD
(max) limit, then access time is controlled by t
AA
.
Discontinued (7/00 - last order; 9/00 - last ship)
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