Category Archives: Uncategorized

Process introduction and technical points analysis of copper deposition process for evi circuit boards Chemical copper is widely used in the production and processing of printed circuit boards with through holes. Its main purpose is to deposit a layer of copper on the non-conductive substrate through a series of chemical treatment methods, and then thicken […]

PCB proofing production is developing in the direction of high density, high precision, fine aperture, fine wire, fine pitch, high reliability, multilayer, high-speed transmission, light weight and thinness. At the same time, production is developing in the direction of increasing productivity, reducing cost and pollution, and adapting to multi-variety and small batch production. The technical […]

Dot matrix board (universal circuit board/hole board) is a kind of printed circuit board (PCB) which is covered with pads according to the standard IC pitch (2.54mm) and can be inserted with components and connections according to one’s own wishes, commonly known as “hole board”. Compared with professional PCB plate making, hole plate has the […]

1. Xilinx ISE traditional FPGA design process The basic process of developing FPGA by using Xilinx ISE software includes code input, function simulation, synthesis, simulation after synthesis, implementation, simulation and verification after wiring and debugging after work. 1) circuit design or code input The design of FPGA can directly draw the schematic diagram, but in […]

Signal Integrity (SI) of high-speed PCB board design is abbreviated as SI. Definition: The quality of the signal on the signal line is the ability of the signal to respond with the correct timing and voltage in the circuit. High switching speed of integrated circuit chips (IC) or logic devices, incorrect layout of terminal elements […]

Llwinner A40i is an industrial processor developed in Quan Zhi, which has the characteristics of rich interfaces, low power consumption and high system integration. It is mainly used in industrial control products based on visual interaction. Quan Zhi A40I is based on Cortex™-A7 quad-core processor, with the highest frequency of 1.2GHz, integrated with Mali400 MP2 […]

It is the most skillful and limited in PCB design. Even engineers who have laid wires for more than ten years often feel that they can’t lay wires. Because they see all kinds of problems and know what consequences this wire will lead to when it is laid out, they don’t know how to lay […]

RK3399 is a low-power, high-performance application processor chip introduced by Ruixinwei, which is based on Big.Little architecture, that is, dual-core Cortex-A72 and quad-core Cortex-A53 combined architecture with independent NEON co-processors. It is mainly used in intelligent terminal devices such as computers, personal Internet mobile devices, VR and advertising machines. RK3399 has built-in multiple high-performance hardware […]

Freescale Kinetis series is a microcontroller based on ARM CORTEX-M4 introduced by Freescale. Design of Freescale K60 Clock System As shown in the above figure, the Freescale K60 clock system can find that there are four source clock sources of the device: ① Internal reference clock sources, including Fast IRC and Slow IRC (IRC-Internal Reference […]

Base station, information communication between base stations. V2 is the key technology to realize intelligent transportation technology in the future. NXP, formerly known as Philips Semiconductor Company with a long history, has a very mature practical application scheme and technical platform for vehicle-to-outside information exchange (V2X). On the vehicle V2X communication, NXP provides complete solutions […]