- 您現在的位置：買賣IC網 > PDF目錄363874 > W256 (CYPRESS SEMICONDUCTOR CORP) 12 Output Buffer for 2 DDR and 3 SRAM DIMMS PDF資料下載
參數資料
| 型號： | W256 |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 12 Output Buffer for 2 DDR and 3 SRAM DIMMS |
| 中文描述： | LOW SKEW CLOCK DRIVER, 6 TRUE OUTPUT(S), 6 INVERTED OUTPUT(S), PDSO28 |
| 封裝： | 0.209 INCH, SSOP-28 |
| 文件頁數： | 2/9頁 |
| 文件大小： | 176K |
| 代理商： | W256 |
W256
Document #: 38-07256 Rev. *C
Page 2 of 9
Pin Summary
Name
Pins
Description
SEL_DDR
28
Input to configure for DDR-ONLY mode or STANDARD SDRAM mode
.
1 = DDR-ONLY mode.
0 = STANDARD SDRAM mode.
When SEL_DDR is pulled HIGH or configured for DDR-ONLY mode, all the buffers
will be configured as DDR outputs.
Connect VDD3.3_2.5 to a 2.5V power supply in DDR-ONLY mode.
When SEL_DDR is pulled LOW or configured for STANDARD SDRAM output, all
the buffers will be configured as STANDARD SDRAM outputs.
Connect VDD3.3_2.5 to a 3.3V power supply in STANDARD SDRAM mode.
SMBus clock input
.
SMBus data input
.
Reference input from chipset
. 2.5V input for DDR-ONLY mode; 3.3V input for
STANDARD SDRAM mode.
Feedback clock for chipset
. Output voltage depends on VDD3.3_2.5V.
Active LOW input to enable Power Down mode; all outputs will be pulled LOW
.
Clock outputs
. These outputs provide copies of BUF_IN. Voltage swing depends
on VDD3.3_2.5 power supply.
Clock outputs
. These outputs provide complementary copies of BUF_IN when
SEL_DDR is active. These outputs provide copies of BUF_IN when SEL_DDR is
inactive. Voltage swing depends on VDD3.3_2.5 power supply.
Connect to 2.5V power supply when W256 is configured for DDR-ONLY mode
.
Connect to 3.3V power supply, when W256 is configured for standard SDRAM
mode.
Ground
.
SCLK
SDATA
BUF_IN
16
15
10
FBOUT
PWR_DWN#
DDR[0:5]T_SDRAM
[0,2,4,6,8,10]
DDR[0:5]C_SDRAM
[1,3,5,7,9, 11]
1
2
3, 7, 12, 19, 23, 27
4, 8, 13, 18, 22, 26
VDD3.3_2.5
5, 9, 14, 21, 25
GND
6, 11, 17, 20, 24
相關PDF資料 |
PDF描述 |
|---|---|
| W256H | 12 Output Buffer for 2 DDR and 3 SRAM DIMMS |
| W256HT | 12 Output Buffer for 2 DDR and 3 SRAM DIMMS |
| W25P010A | 32K×32 Burst Pipeline High-Speed CMOS Static RAM(32K×32位同步脈沖式管高速CMOS靜態RAM) |
| W25P012A | 32K×32 Burst Pipeline High-Speed CMOS Static RAM(32K×32位同步脈沖管線高速CMOS靜態RAM) |
| W25P022A | 64K×32 Burst Pipeline High-Speed CMOS Static RAM(64K×32位同步脈沖管線高速CMOS靜態RAM) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W2563 | 制造商:Intel 功能描述:MBRD, DELL LA PAZ |
| W2563APCC | 制造商:Intel 功能描述:MBRD, DELL LA PAZ |
| W256E13 | 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:CV500 Supp. Software Op Manual DX CODE ZA |
| W256H | 功能描述:IC CLK BUFFER 1:12 180MHZ 28SSOP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘緩沖器，驅動器 系列:- 產品培訓模塊:High Bandwidth Product Overview 標準包裝:1,000 系列:Precision Edge® 類型:扇出緩沖器（分配） 電路數:1 比率 - 輸入:輸出:1:4 差分 - 輸入:輸出:是/是 輸入:CML，LVDS，LVPECL 輸出:CML 頻率 - 最大:2.5GHz 電源電壓:2.375 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤，16-MLF? 供應商設備封裝:16-MLF?（3x3） 包裝:帶卷 (TR) |
| W256HT | 制造商:Cypress Semiconductor 功能描述: |
發布緊急采購，3分鐘左右您將得到回復。