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參數(shù)資料
| 型號： | KM418RD2AD |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| 中文描述： | 128/144Mbit RDRAM的256 × 16/18位× 2 * 16屬銀行直接RDRAMTM |
| 文件頁數(shù)： | 4/64頁 |
| 文件大?。?/td> | 4052K |
| 代理商： | KM418RD2AD |
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Page 1
KM416RD8AC(D)/KM418RD8AC(D)
Direct RDRAM
Rev. 1.01 Oct. 1999
Overview
The Rambus Direct RDRAM
is a general purpose high-
performance memory device suitable for use in a broad
range of applications including computer memory, graphics,
video, and any other application where high bandwidth and
low latency are required.
The 128/144-Mbit Direct Rambus DRAMs (RDRAM
) are
extremely high-speed CMOS DRAMs organized as 8M
words by 16 or 18 bits. The use of Rambus Signaling Level
(RSL) technology permits 600MHz to 800MHz transfer
rates while using conventional system and board design
technologies. Direct RDRAM devices are capable of
sustained data transfers at 1.25 ns per two bytes (10ns per
sixteen bytes).
The architecture of the Direct RDRAMs allows the highest
sustained bandwidth for multiple, simultaneous randomly
addressed memory transactions. The separate control and
data buses with independent row and column control yield
over 95% bus efficiency. The Direct RDRAM's thirty-two
banks support up to four simultaneous transactions.
System oriented features for mobile, graphics and large
memory systems include power management, byte masking,
and x18 organization. The two data bits in the x18 organiza-
tion are general and can be used for additional storage and
bandwidth or for error correction.
Features
Highest sustained bandwidth per DRAM device
- 1.6GB/s sustained data transfer rate
- Separate control and data buses for maximized
efficiency
- Separate row and column control buses for
easy scheduling and highest performance
- 32 banks: four transactions can take place simul-
taneously at full bandwidth data rates
Low latency features
- Write buffer to reduce read latency
- 3 precharge mechanisms for controller flexibility
- Interleaved transactions
Advanced power management:
- Direct RDRAM operates from a 2.5 volt supply
- Multiple low power states allows flexibility in power
consumption versus time to transition to active state
- Power-down self-refresh
Organization: 1Kbyte pages and 32 banks, x 16/18
- x18 organization allows ECC configurations or
increased storage/bandwidth
- x16 organization for low cost applications
Uses Rambus Signaling Level (RSL) for up to 800MHz
operation
The 128/144-Mbit Direct RDRAMs are offered in a CSP
horizontal package suitable for desktop as well as low-
profile add-in card and mobile applications.
Key Timing Parameters/Part Numbers
a.The
“
32s
"
designation indicates that this RDRAM core is composed of 32
banks which use a "split" bank architecture.
b.The
“
C
“
designator indicates the normal package and the
“
D
“
indicates the
mirrored package.
c.The
“
R
“
designator indicates that this RDRAM core uses Normal Power
Self Refresh.
Figure 1: Direct RDRAM CSP Package
Organization
Speed
Part Number
Bin
I/O
Freq.
MHz
t
RAC
(Row
Time) ns
256Kx16x32s
a
-RG60
600
53.3
KM416RD8AC(D
b
)-R
c
G60
-RK70
711
45
KM416RD8AC(D)-RK70
-RK80
800
45
KM416RD8AC(D)-RK80
256Kx18x32s
-RG60
600
53.3
KM418RD8AC(D)-RG60
-RK70
711
45
KM418RD8AC(D)-RK70
-RK80
800
45
KM418RD8AC(D)-RK80
SEC KOREA
KM4
xx
RD8AC
M
SEC KOREA
KM4
xx
RD8AD
a. Normal Package
b. Mirrored Package
相關PDF資料 |
PDF描述 |
|---|---|
| KM418RD2C | 128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD2D | 128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD32AC | 128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD32AD | 128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD32C | 128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| KM418RD2C | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD2D | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD32AC | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD32AD | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
| KM418RD32C | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128/144Mbit RDRAM 256K x 16/18 bit x 2*16 Dependent Banks Direct RDRAMTM |
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