2021东三省数学建模竞赛省题C题-配电网可靠性和故障软自愈研究
上传时间: 2021-08-11
上传用户:INEVER
2021东三省数学建模竞赛省题B题-背向瑞利散射光纤激光传感器设计
上传时间: 2021-08-11
上传用户:INEVER
2021东三省数学建模竞赛省题A题-火星探测器着陆控制方案
上传时间: 2021-08-11
上传用户:INEVER
遥控直流立扇FSA-TM888FLZ控制说明
上传时间: 2021-11-11
上传用户:william1687
1. Scope ......................................................................................................................................................................... 12. DDR4 SDRAM Package Pinout and Addressing ....................................................................................................... 22.1 DDR4 SDRAM Row for X4,X8 and X16 ................................................................................................................22.2 DDR4 SDRAM Ball Pitch........................................................................................................................................22.3 DDR4 SDRAM Columns for X4,X8 and X16 ..........................................................................................................22.4 DDR4 SDRAM X4/8 Ballout using MO-207......................................................................................................... 22.5 DDR4 SDRAM X16 Ballout using MO-207.............................................................................................................32.6 Pinout Description ..................................................................................................................................................52.7 DDR4 SDRAM Addressing.....................................................................................................................................73. Functional Description ...............................................................................................................................................83.1 Simplified State Diagram ....................................................................................................................................83.2 Basic Functionality..................................................................................................................................................93.3 RESET and Initialization Procedure .....................................................................................................................103.3.1 Power-up Initialization Sequence .............................................................................................................103.3.2 Reset Initialization with Stable Power ......................................................................................................113.4 Register Definition ................................................................................................................................................123.4.1 Programming the mode registers .............................................................................................................123.5 Mode Register ......................................................................................................................................................134. DDR4 SDRAM Command Description and Operation ............................................................................................. 244.1 Command Truth Table ..........................................................................................................................................244.2 CKE Truth Table ...................................................................................................................................................254.3 Burst Length, Type and Order ..............................................................................................................................264.3.1 BL8 Burst order with CRC Enabled .........................................................................................................264.4 DLL-off Mode & DLL on/off Switching procedure ................................................................................................274.4.1 DLL on/off switching procedure ...............................................................................................................274.4.2 DLL “on” to DLL “off” Procedure ..............................................................................................................274.4.3 DLL “off” to DLL “on” Procedure ..............................................................................................................284.5 DLL-off Mode........................................................................................................................................................294.6 Input Clock Frequency Change ............................................................................................................................304.7 Write Leveling.......................................................................................................................................................314.7.1 DRAM setting for write leveling & DRAM termination function in that mode ............................................324.7.2 Procedure Description .............................................................................................................................334.7.3 Write Leveling Mode Exit .........................................................................................................................34
标签: DDR4
上传时间: 2022-01-09
上传用户:
LED 数码管 LCD屏等显示器件Altium Designer AD原理图库元件库CSV text has been written to file : 9.2 - 显示器件.csvLibrary Component Count : 64Name Description----------------------------------------------------------------------------------------------------1588A 共阴单色LED8*8点阵屏1588B 共阳单色LED8*8点阵屏2811A 0.28寸1位共阴数码管2811B 0.28寸1位共阳数码管2821A 0.28寸2位共阴数码管2821B 0.28寸2位共阳数码管2831A 0.28寸3位共阴数码管2831B 0.28寸3位共阳数码管4041A 0.4寸4位共阴数码管4041B 0.4寸4位共阳数码管5011A 0.5寸1位共阴数码管5011B 0.5寸1位共阳数码管5021A 0.5寸2位共阴数码管5021B 0.5寸2位共阳数码管5421A-M 0.54寸米字2位共阴数码管5421B-M 0.54寸米字2位共阳数码管5611A 0.56寸1位共阴数码管5611B 0.56寸1位共阳数码管5621A 0.56寸2位共阴数码管5621B 0.56寸2位共阳数码管5631A 0.56寸3位共阴数码管5631B 0.56寸3位共阳数码管5641A 0.56寸4位共阴数码管5641B 0.56寸4位共阳数码管8011A 0.8寸1位共阴数码管8011B 0.8寸1位共阳数码管8021A 0.8寸2位共阴数码管8021B 0.8寸2位共阳数码管8031A 0.8寸3位共阴数码管8031B 0.8寸3位共阳数码管8041A 0.8寸4位共阴数码管8041B 0.8寸4位共阳数码管CH12864I 12864 点阵屏JLX12864G-086 12864 点阵屏JLX12864G-1353-PN 12864 点阵屏JLX12864G-200 12864 点阵屏LCD 1602 LCD 1602LCD7X18 LCD7X18数码屏带背光OLED 1.3-12864_7pin 12864 点阵屏TFT1.5_39P 128*128TXD144CF 1.44寸TFTTXD144CF-modules 1.44寸TFLibrary Component Count : 14Name Description----------------------------------------------------------------------------------------------------LED RG-A 共阳双色LEDLED RG-K 共阴双色LEDLED-3MM 插件LEDLED-5MM 5mm插件LEDLED-8MM 8mm插件LEDLED-F234 方形LEDLED-F257 方形LEDLED-RGB 三基色LEDLED-RGB-3528 三基色LEDLED-SH-5MM 5mm草帽LEDLED-SMD 贴片LEDLED-SMD-RG 贴片双色LEDLED-SMD_1W 大功率LEDLED-SMD_3W 大功率LEDSV text has been written to file : 9.3 - 数码管.csvLibrary Component Count : 54Name Description----------------------------------------------------------------------------------------------------2811A 0.28寸1位共阴数码管2811B 0.28寸1位共阳数码管2821A 0.28寸2位共阴数码管2821B 0.28寸2位共阳数码管2831A 0.28寸3位共阴数码管2831B 0.28寸3位共阳数码管2841A 0.28寸4位共阴数码管2841B 0.28寸4位共阳数码管3611A 0.36寸1位共阴数码管3611B 0.36寸1位共阳数码管3621A 0.36寸2位共阴数码管3621B 0.36寸2位共阳数码管3631A 0.36寸3位共阴数码管3631B 0.36寸3位共阳数码管3641A 0.36寸4位共阴数码?
标签: led Altium Designer
上传时间: 2022-03-13
上传用户:
--文件名:mine4.vhd。 --功能:实现4种常见波形正弦、三角、锯齿、方波(A、B)的频率、幅度可控输出(方波 --A的占空比也是可控的),可以存储任意波形特征数据并能重现该波形,还可完成 --各种波形的线形叠加输出。 --说明: SSS(前三位)和SW信号控制4种常见波形种哪种波形输出。4种波形的频率、 --幅度(基准幅度A)的调节均是通过up、down、set按键和4个BCD码置入器以及一 --个置入档位控制信号(ss)完成的(AMP的调节范围是0~5V,调节量阶为1/51V)。 --其中方波的幅度还可通过u0、d0调节输出数据的归一化幅值(AMP0)进行进一步 --细调(调节量阶为1/(51*255)V)。方波A的占空比通过zu、zp按键调节(调节 --量阶1/64*T)。系统采用内部存储器——RAM实现任意输入波形的存储,程序只支 --持键盘式波形特征参数置入存储,posting 为进入任意波置入(set)、清除(clr)状态 --控制信号,SSS控制存储波形的输出。P180为预留端口,
上传时间: 2017-02-09
上传用户:z1191176801
Digital的Unix操作系统VAX 4.2源码
上传时间: 2013-12-24
上传用户:我们的船长
里面有相应的hpunix(HP-UX hpl1000 B.11.00 U 9000/800 (tb)),linux(Red Hat Linux release 9 Kernel 2.4.20-8),windows的头文件、库文件,还有相应的demo程序
标签: release hpunix Kernel HP-UX
上传时间: 2015-01-06
上传用户:cursor
java ejb开发 程序4、语句alter table people add(phone_number varchar2(10)) 的作用是 A 修改表结构 B 为people表添加约束,约束名称是phone_number C 向people表中添加一列,名称是phone_number,数据类型是varchar2,长度是10 D 上述答案均不正确 5、( )BLOB和CLOB的区别在于 A CLOB只能存放字符类型的数据,而BLOB没有任何限制 B BLOB只能存放字符类型的数据,而CLOB没有任何限制 C CLOB只能存放小于4000字节的数据,而BLOB可以存放大于4000字节的数据 D BLOB只能存放小于4000字节的数据,而CLOB可以存放大于4000字节的数据 6、存储过程从本质上来讲就是 A 匿名的PL/SQL程序块,它可以被赋予参数 B 命名的PL/SQL程序块,它可以被赋予参数 C 命名的PL/SQL程序块,不能被赋予参数 D 匿名的PL/SQL程序块,不能被赋予参数 7、( )下列关于日期数据类型,哪一个语句是正确的写法 A insert into test values( 9999-12-03 ) B insert into test values( 1999-03-02 ) C insert into test values(to_char(1999-06-03, yyyy/dd/mm )) D insert into test
标签: people phone_number varchar2 alter
上传时间: 2013-12-26
上传用户:wendy15