- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄204017 > WEDPN4M72V-100BC (WHITE ELECTRONIC DESIGNS CORP) 4M X 72 SYNCHRONOUS DRAM MODULE, 7 ns, PBGA219 PDF資料下載
參數(shù)資料
| 型號： | WEDPN4M72V-100BC |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | DRAM |
| 英文描述： | 4M X 72 SYNCHRONOUS DRAM MODULE, 7 ns, PBGA219 |
| 封裝： | 25 X 21 MM, PLASTIC, BGA-219 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 203K |
| 代理商： | WEDPN4M72V-100BC |
1
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
WEDPN4M72V-XBX
November 2003 Rev. 14
The 32MByte (256Mb) SDRAM is a high-speed CMOS, dy-
namic random-access ,memory using 5 chips containing
67,108,864 bits. Each chip is internally configured as a quad-
bank DRAM with a synchronous interface. Each of the chip’s
16,777,216-bit banks is organized as 4,096 rows by 256
columns by 16 bits.
Read and write accesses to the SDRAM are burst oriented;
accesses start at a selected location and continue for a pro-
grammed number of locations in a programmed sequence.
Accesses begin with the registration of an ACTIVE com-
mand, which is then followed by a READ or WRITE com-
mand. The address bits registered coincident with the AC-
TIVE command are used to select the bank and row to be
accessed (BA0, BA1 select the bank; A0-11 select the row).
The address bits registered coincident with the READ or
WRITE command are used to select the starting column lo-
cation for the burst access.
The SDRAM provides for programmable READ or WRITE burst
lengths of 1, 2, 4 or 8 locations, or the full page, with a
burst terminate option. An AUTO PRECHARGE function may
be enabled to provide a self-timed row precharge that is
initiated at the end of the burst sequence.
The 256Mb SDRAM uses an internal pipelined architecture
to achieve high-speed operation. This architecture is com-
patible with the 2
n rule of prefetch architectures, but it also
allows the column address to be changed on every clock
cycle to achieve a high-speed, fully random access.
Precharging one bank while accessing one of the other three
banks will hide the precharge cycles and provide seam-
less, high-speed, random-access operation.
4Mx72 Synchronous DRAM
! High Frequency = 100, 125MHz
! Package:
219 Plastic Ball Grid Array (PBGA), 25 x 21mm
! Single 3.3V ±0.3V power supply
! Fully Synchronous; all signals registered on positive
edge of system clock cycle
! Internal pipelined operation; column address can be
changed every clock cycle
! Internal banks for hiding row access/precharge
! Programmable Burst length 1,2,4,8 or full page
! 4096 refresh cycles
! Commercial, Industrial and Military Temperature Ranges
! Organized as 4M x 72
! Weight: WEDPN4M72V-XBX - 2 grams typical
! 60% SPACE SAVINGS
! Reduced part count
! Reduced I/O count
19% I/O Reduction
! Lower inductance and capacitance for low noise
performance
! Suitable for hi-reliability applications
! Upgradeable to 8M x 72 density with same footprint
(contact factory for information)
FEATURES
BENEFITS
*This product is subject to change without notice.
GENERAL DESCRIPTION
25
21
Discrete Approach
S
A
V
I
N
G
S
Area
5 x 265mm2 = 1328mm 2
525mm2
60%
5 x 54 pins = 270 pins
219 Balls
19%
ACTUAL SIZE
22.3
11.9
I/O
Count
11.9
54
TSOP
54
TSOP
54
TSOP
54
TSOP
54
TSOP
White Electronic Designs
WEDPN4M72V-XBX
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WEDPY256K72V-100BC | 256K X 72 MULTI DEVICE SRAM MODULE, 5 ns, PBGA159 |
| WEDPY256K72V-150BI | 256K X 72 MULTI DEVICE SRAM MODULE, 3.8 ns, PBGA159 |
| WF050B | 1 FUNCTIONS, 45.75 MHz, SAW-VIDEO/SOUND FILTER |
| WF19A | 1 FUNCTIONS, 58.75 MHz, SAW-VIDEO/SOUND FILTER |
| WF512K32-120G4M5 | 512K X 32 FLASH 5V PROM MODULE, 120 ns, CQFP68 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WEDPN4M72V-125B2C | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx72 Synchronous DRAM |
| WEDPN4M72V-125B2I | 制造商:Microsemi Corporation 功能描述:4M X 72 SDRAM MODULE, 3.3V, 121 MHZ, 219 PBGA 21MM X 21MM, I - Bulk |
| WEDPN4M72V-125B2M | 制造商:Microsemi Corporation 功能描述:4M X 72 SDRAM MODULE, 3.3V, 121 MHZ, 219 PBGA 21MM X 21MM, M - Bulk |
| WEDPN4M72V-133B2C | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx72 Synchronous DRAM |
| WEDPN4M72V-133B2I | 制造商:WEDC 制造商全稱:White Electronic Designs Corporation 功能描述:4Mx72 Synchronous DRAM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。