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參數(shù)資料
| 型號(hào)： | IBM11T2645HP |
| 廠商： | IBM Microeletronics |
| 英文描述： | 2M x 64 144 PIN SO DIMM(2M x 64 工業(yè)標(biāo)準(zhǔn)144腳小外形雙列直插動(dòng)態(tài)RAM模塊) |
| 中文描述： | 200萬(wàn)× 64引腳SO DIMM內(nèi)存144（2米× 64工業(yè)標(biāo)準(zhǔn)144腳小外形雙列直插動(dòng)態(tài)內(nèi)存模塊） |
| 文件頁(yè)數(shù)： | 1/32頁(yè) |
| 文件大?。?/td> | 602K |
| 代理商： | IBM11T2645HP |
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IBM11T2645HP
2M x 64 144 PIN SO DIMM
50H7630
SA14-4460-04
Revised 4/97
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 1 of 32
Features
144 Pin JEDEC Standard, 8 Byte Small Outline
Dual In-line Memory Module with 8 Byte busses
2Mx64 Extended Data Out SO DIMM
Performance:
All inputs and outputs are LVTTL (3.3V) compat-
ible
Single 3.3V
±
0.3V Power Supply
Au contacts
Optimized for byte-write non-parity applications
System Performance Benefits:
- Reduced noise (18 V
SS
/18V
CC
pins)
- Byte write, byte read accesses
- Serial PDs
Extended Data Out (EDO) Mode, Read-Modify-
Write Cycles
Refresh Modes: RAS-Only, CBR Hidden
Refresh, and Self Refresh
2048 refresh cycles distributed across 128ms
11/10 addressing (Row/Column)
Card size: 2.66" x 1.0" x 0.149"
DRAMS in TSOP Package
Description
IBM11T2645HP is an industry standard 144-pin
8-byte Small Outline Dual In-line Memory Module
(SO DIMM) which is organized as a 2Mx64 high
speed memory array designed for use in non-parity
applications. The SO DIMM uses 8 2Mx8 EDO
DRAMs in TSOP packages. The use of EDO
DRAMs allows for a reduction in Page Mode Cycle
time from 40ns (Fast Page) to 25ns for 60ns EDO
modules.
This card uses serial presence detectsimplemented
via a serial EEPROM using the two pin I
2
C Protocol.
This communication protocol uses CLOCK (SCL)
and DATA I/O (SDA) lines to synchronously clock
data between the master (ex: The System Micropro-
cessor) and the slave EEPROM device. The device
address for the EEPROM is set to zero at the card.
The first 128 bytes are utilized by the SO DIMM
manufacturer and the second 128 bytes are avail-
able to the end user. All IBM 144-pin SO DIMMs
provide a high performance, flexible 8-byte interface
in a 2.66” long space-saving footprint. Related prod-
ucts are the 1Mx64, 4Mx64 and the x72 (ECC)
SODIMMs.
-60
-6R
-70
t
RAC
RAS Access Time
60ns
60ns
70ns
t
CAC
CAS Access Time
15ns
17ns
20ns
t
AA
Access Time From Address
30ns
30ns
35ns
t
RC
Cycle Time
104ns 104ns 124ns
t
HPC
EDO Mode Cycle Time
25ns
25ns
30ns
Card Outline
1
2
59
60
61
62
143
144
(Front)
(Back)
IBM11T2645HP 2M x 6411/10, 3.3V, EDOMMDD41DSU-001019432.
Discontinued (9/98 - last order; 3/99 last ship)
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