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參數(shù)資料
| 型號(hào)： | IBM11T8645MP |
| 廠商： | IBM Microeletronics |
| 英文描述： | 8M x 64 144 PIN SO DIMM(Small Outline Dual In-Line Memory Module)(8M x 64 144腳小外形雙列直插動(dòng)態(tài)RAM模塊) |
| 中文描述： | 8米× 64引腳SO DIMM內(nèi)存（小外形144雙列內(nèi)存模組）（8米× 64 144腳小外形雙列直插動(dòng)態(tài)內(nèi)存模塊） |
| 文件頁數(shù)： | 1/32頁 |
| 文件大?。?/td> | 922K |
| 代理商： | IBM11T8645MP |
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IBM11T4645MP
IBM11T8645MP
4M/8M x 64 144 PIN SO DIMM
75H5078
GA14-4475-02
Rev 11/97
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
4M/8Mx64 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
4096 refresh cycles distributed across 128ms
12/10 addressing (Row/Column)
Card size: 2.66" x 1.0" x 0.149"
DRAMS in TSOP Package
Description
IBM11T8645MP is an industry standard 144-pin
8-byte Small Outline Dual In-line Memory Module
(SO DIMM) which is organized as an 8Mx64 high
speed memory array designed for use in non-parity
applications. The SO DIMM uses 8 4Mx16 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.
The IBM11T4645MP is a 4Mx64 half populated ver-
sion manufactured with 4 4Mx16 TSOP devices.
This card uses Serial Presence Detects (SPDs)
implemented 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 syn-
chronously clock data between the master (for
example, the System Microprocessor) 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 available to the end
user.
All IBM 144-pin SO DIMMs provide a high perfor-
mance, flexible 8-byte interface in a 2.66" long
space-saving footprint. Related products are the
1Mx64, 2Mx64, 8Mx64 (made with 8Mx8 DRAMs)
and the x72 (ECC) SO DIMMs.
-50
-60
t
RAC
RAS Access Time
50ns
60ns
t
CAC
CAS Access Time
13ns
15ns
t
AA
Access Time From Address
25ns
30ns
t
RC
Cycle Time
84ns
104ns
t
HPC
EDO Mode Cycle Time
20ns
25ns
Card Outline
1
2
59
60
61
62
143
144
(Front)
(Back)
IBM0118180M 1M x 1810/10, 5.0V, LP, SR. IBM0118180P1M x 1810/10, 3.3V, LP, SR.
Discontinued (9/98 - last order; 3/99 last ship)
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