电子发烧友

0.70mm。设置完成后焊接制作界面截图如下图所示。BGA焊盘设计（3）测量BGA引脚之间的间距为39.37mil（1.0mm），两个焊盘之间平行布线区域为19.291

2020-07-06 15:58

PCB设计中有诸多需要考虑到安全间距的地方。在此，暂且归为两类：一类为电气相关安全间距，一类为非电气相关安全间距。 电气

2020-08-07 07:41

CAN控制器通过两根线上的电位差来判断总线电平can.h#can.h#include"stm32f2xx.h" #ifndef __CAN_H_#define

2021-08-19 09:14

这是贴片类元器件的布局摆放间距要求，这个间距主要是考虑到良率 和机器的精度能力。 主要考虑以下几点：1） 贴片类元器件之间的布局摆放间距2） 钢网开口所需的空间3） 检

2018-10-06 10:04

悬空。IC的②脚低于1／3Ｖｃｃ，其③脚输出高电平，继电器得电吸合，启动水泵抽水，水位逐渐上升。 中间保持：当水位上升到Ａ点到Ｂ点之间时，电阻R4被串接入电路，此时P点电位控制在1／2Ｖｃｃ左右，触发器

2021-05-21 07:21

如下图，在Altium Designer 10中画PCB图，放置了一个“多边形平面”的覆铜，我想知道，怎样增大走线和覆铜之间的空隙?

2019-07-18 06:03

这两个电压的差值来判断逻辑状态“0”还是“1”。而承载差分信号的那一对走线就称为差分走线。 差分信号和普通的单端信号走线相比，最明显的优势体现在以下三个方面：a.抗干扰

2016-01-30 11:11

#include#define uchar unsigned char#define uint unsigned int/* * main.c */unsigned char tab[]={//图像数据宽度x高度=128x64 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0xC0,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xCF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0x00,0x60,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x00,0x00,0x00,0x00,0x00,0x03,0xFF,0x00,0x61,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0x80,0x04,0x00,0x00,0x00,0x00,0x03,0xFF,0x0C,0x60,0x00,0x3F,0xFF,0xFF,0xFF,0xFF, 0x80,0xFC,0x00,0x00,0x00,0x00,0x03,0xFF,0x0C,0x00,0x00,0x1F,0xFF,0xFF,0xFF,0xF7, 0x83,0xFF,0xC0,0x00,0x00,0x00,0x03,0xFF,0x0C,0x00,0xE1,0xFF,0xFF,0xFF,0xFF,0xF7, 0x8F,0xCF,0xC0,0x00,0x00,0x00,0x03,0xFF,0x0C,0x61,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0x9F,0xE3,0xFC,0x00,0x00,0x00,0x03,0xFF,0x0C,0x60,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0xDF,0xF9,0xFE,0x00,0x00,0x00,0x03,0xFF,0x0C,0x60,0x00,0x3F,0xFF,0xFF,0xFF,0xFF, 0xFE,0x3C,0x7E,0x00,0x00,0x00,0x03,0xFF,0x0C,0x60,0x00,0x30,0x00,0x00,0x03,0xFF, 0xFF,0x4E,0x7F,0x00,0x00,0x00,0x03,0xFF,0x0C,0x61,0xE1,0xF0,0x00,0x00,0x03,0xFF, 0xFF,0xE1,0xFF,0x80,0x00,0x00,0x03,0xFF,0x0C,0x61,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xE0,0x80,0x00,0x00,0x03,0xFF,0x0C,0x61,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xE4,0x00,0x00,0x00,0x03,0xFF,0x0C,0x60,0x00,0x3F,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0x83,0x80,0x00,0x03,0xFF,0x0C,0x60,0x00,0x3F,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xF1,0x87,0xC0,0x00,0x03,0xFF,0x0C,0x61,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xF8,0x1F,0xE0,0x00,0x03,0xFF,0x0C,0x61,0xE1,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFC,0x17,0xF0,0x00,0x03,0xFF,0x0C,0x60,0x80,0x1F,0xFF,0xFF,0xFF,0xFF, 0xFF,0xF1,0xFF,0x1F,0xFE,0x00,0x03,0xFF,0x04,0x60,0x00,0x1F,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFC,0x3F,0x1F,0xFF,0x00,0x03,0xFF,0xFF,0xED,0x67,0x7F,0xFF,0xFF,0xFF,0xFF, 0xFE,0xFE,0x3E,0x3C,0x3F,0xF0,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFE,0x0F,0xFE,0x03,0xBF,0x90,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFF,0xF9,0x7C,0x0F,0xFF,0x9E,0x03,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF, 0xFF,0xFC,0x78,0x20,0x7F,0xFF,0x03,0xF7,0x37,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F, 0xFF,0x3C,0x70,0x1F,0xFF,0xFF,0x83,0xEC,0xAE,0x3F,0xFC,0x06,0xFF,0xFF,0x7E,0x4F, 0xDF,0xC7,0xF0,0x1F,0xFF,0xFF,0x03,0xF9,0xE3,0x0F,0xD0,0x00,0x17,0x80,0xE0,0x37, 0xCF,0xF1,0xC2,0x1F,0xFF,0xFF,0x03,0xF0,0xE0,0x01,0xF8,0x4E,0xFC,0x00,0x3C,0xBF, 0xC7,0xFF,0x00,0x1F,0xEF,0xFF,0x03,0xFC,0xE0,0x00,0x06,0x4E,0xE0,0x00,0x06,0x6F, 0xE0,0x7C,0x00,0x0F,0xFF,0xFF,0x03,0xF7,0x00,0x00,0x07,0xFF,0xC0,0x00,0x03,0x7F, 0xF8,0x30,0x00,0x0F,0xE7,0xFF,0x03,0xFF,0x00,0x00,0x01,0xB3,0x80,0x00,0x01,0xFF, 0xFC,0x20,0x00,0x0F,0xF7,0xFE,0x03,0xFF,0x00,0x00,0x01,0x93,0x00,0x00,0x00,0xFF, 0xFC,0x48,0x00,0x07,0xFF,0xFC,0x03,0xFE,0x00,0x00,0x00,0x82,0x00,0x00,0x00,0xFF, 0xFE,0x9C,0x00,0x03,0xC0,0x78,0x03,0xFE,0x00,0x00,0x00,0xC2,0x00,0x00,0x00,0x7F, 0xFC,0x3C,0x00,0x01,0xE7,0xF8,0x03,0xFE,0x00,0x00,0x00,0x76,0x00,0x00,0x00,0x7F, 0xFE,0x1E,0x00,0x00,0x70,0xF8,0x03,0xFE,0x00,0x00,0x00,0xFE,0x00,0x00,0x00,0x3F, 0xFC,0x9E,0x00,0x00,0x3F,0xF8,0x03,0xFE,0x00,0x00,0x00,0xFC,0x00,0x00,0x00,0x3F, 0xFC,0xCF,0x00,0x00,0x03,0xF8,0x03,0xFE,0x00,0x00,0x00,0xFC,0x00,0x00,0x00,0x3F, 0xFF,0xC6,0x00,0x00,0x01,0xFC,0xF3,0xFE,0x0E,0x00,0xE0,0xEC,0x02,0x00,0x00,0x3F, 0xFF,0xC0,0x00,0x00,0x3F,0xFF,0xFF,0xFE,0x1C,0x1F,0xE0,0xCC,0x07,0xC0,0x00,0x3F, 0xFF,0x80,0x00,0x00,0x1F,0xFF,0xFF,0xFF,0x11,0xFF,0x30,0xC8,0x0F,0xFC,0x00,0x3F, 0xFF,0x80,0x00,0x1F,0xFF,0xFF,0xDF,0xFE,0x3E,0x7C,0xF0,0xC8,0x1F,0xFF,0xC0,0x3F, 0xFF,0x00,0x00,0x7F,0x7F,0xFF,0xDF,0xFF,0x31,0xBB,0x19,0x50,0x98,0xFF,0x20,0x3F, 0xFF,0x00,0x00,0xFF,0xF3,0xFF,0xFF,0xFD,0x99,0xFF,0x33,0x4D,0x9C,0xFF,0x30,0x3F, 0xFE,0x00,0x1F,0xFF,0xDF,0xFF,0xFF,0xFD,0xDF,0xFF,0xF7,0x4C,0xDF,0xFF,0xF8,0x3F, 0x9E,0x01,0x3F,0xFF,0xFF,0xFF,0xFF,0xFE,0xDB,0xFF,0xF6,0xFC,0xEF,0xFF,0xF8,0x3F, 0xDE,0x07,0x3F,0xFF,0xFF,0xFF,0xFF,0xC3,0x03,0xFF,0xE0,0xBC,0x2F,0xFF,0xF0,0x37, 0xFC,0x06,0xFF,0xFF,0xFF,0xFF,0xFF,0xE7,0x7F,0xFF,0xEF,0xB6,0x07,0xFF,0xF0,0x37, 0xFC,0x07,0xFF,0xFF,0xFF,0xFF,0xFF,0xE9,0x27,0x7D,0xC9,0xF2,0x07,0xFF,0xE0,0x2F, 0xF8,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xF2,0xF3,0x3B,0x93,0xE3,0x03,0xFF,0xC0,0x6F, 0xF8,0x0F,0xFF,0xFF,0xFF,0xFE,0xFF,0xF2,0xE8,0x44,0xF2,0xA5,0x83,0xFF,0x20,0xDF, 0xF8,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0x4C,0xCE,0x79,0x0D,0x87,0x01,0xF1,0x7F, 0xE0,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x11,0x01,0x3E,0x37,0xE4,0xD8,0x22,0xFF, 0xF0,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x31,0x01,0x1F,0x05,0xF4,0x19,0x97,0xFF, 0xF0,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xE2,0x45,0x9F,0xC3,0xF5,0x19,0x67,0xFF, 0xE0,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xD2,0x00,0xBF,0xC7,0xFC,0x59,0x1B,0xFF, 0xE0,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xD6,0x06,0xCF,0xFF,0xFC,0x59,0x3F,0xFF, 0xE0,0x0F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xEE,0x00,0xEF,0xFF,0xFD,0xD9,0xDB,0xFF, 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,};/*************************************************************************12864液晶串行显示测试程序P7.4模拟SID（接第5脚），P2.2模拟SCLK（接第6脚）4脚（CS信号）接高电平选通，15脚（PSB信号）接地选择串行方式->和GND焊盘相接17脚（RST信号）根据注释提示悬空*************************************************************************/void int_port(void) //管脚初始化{//P7.4模拟SID，设置为i/o口输出方向P7DIR|=BIT4;P7OUT&=~BIT4;//P2.2模拟SCLK，设置为i/o口输出方向P2DIR|=BIT2;P2OUT&=~BIT2;}/********************************************************************* 名称 : delay()** 输入 : t* 输出 : 无***********************************************************************/void delay(uint t) //延时函数{ //粗略延时，满足时序要求uint i,j;for(i=0; i

2014-07-13 16:44

1 单端信号线就是用一根线进行传输，并以地作为电压参考点。也就是说，单端信号就是传输电平信号线与地平面电平的电压差。所以信号从A点传递到B点，必须保证这

2019-05-22 07:42