Pcb Design
Contents
Assignment 2 Report
1) Introduction 2
1.1) Purpose 2 1.2) Background 2 1.3) Block Diagram 3
2）Requirements analysis 4
3）Possible solutions 5
4）Implementation 6
4.1) PCB Design 6 4.2) PCB Construction 8 4.3) PCB Testing 8
5）Results 10
6）Discussion of results 14
7）Conclusion 15
References 16
1) Introduction
1.1) Purpose
Various schematic symbols and diagrams are familiarized and a schematic is a collection of electronic symbols connected together with virtual “wires”. When fabricating a printed circuit board (PCB), a schematic is needed to provide input (a netlist) to the layout and routing tool (Varteresian, 2002). In other words, the capture of a schematic diagram is a convention to PCB, subsequent construction and testing. The design of PCBs is very widely used in electronic equipment and systems, for example, good EMC (Electromagnetic Compatibility) practices. These PCB-level EMC practices usually help achieve the required EMC performance at a much lower cost than alternative EMC measures at higher levels of integration, such as whole-product shielding. They also improve signal integrity in both analogue and digital circuits (Armstrong, Aug 1999). Power decoupling techniques can improve the power supply of a PCB and transmission lines techniques are a part of the PCB layout (Armstrong, Oct 1999). The MM232R is a miniature development module which uses FTDI’s FT232RQ. In this assignment, MM232R needed to be designed according to the datasheet. Besides, switches of four pins also needed to be designed, but only two pins were used in diagram. PIC18F1320, a microcontroller, which features six enhanced power-managed “software controlled” modes, power consumption as low as 0.1 microamps in standby mode and a wide operating voltage range from 2 to 5.5 volts which makes this device ideal for
Assignment 2 Report
1) Introduction 2
1.1) Purpose 2 1.2) Background 2 1.3) Block Diagram 3
2）Requirements analysis 4
3）Possible solutions 5
4）Implementation 6
4.1) PCB Design 6 4.2) PCB Construction 8 4.3) PCB Testing 8
5）Results 10
6）Discussion of results 14
7）Conclusion 15
References 16
1) Introduction
1.1) Purpose
Various schematic symbols and diagrams are familiarized and a schematic is a collection of electronic symbols connected together with virtual “wires”. When fabricating a printed circuit board (PCB), a schematic is needed to provide input (a netlist) to the layout and routing tool (Varteresian, 2002). In other words, the capture of a schematic diagram is a convention to PCB, subsequent construction and testing. The design of PCBs is very widely used in electronic equipment and systems, for example, good EMC (Electromagnetic Compatibility) practices. These PCB-level EMC practices usually help achieve the required EMC performance at a much lower cost than alternative EMC measures at higher levels of integration, such as whole-product shielding. They also improve signal integrity in both analogue and digital circuits (Armstrong, Aug 1999). Power decoupling techniques can improve the power supply of a PCB and transmission lines techniques are a part of the PCB layout (Armstrong, Oct 1999). The MM232R is a miniature development module which uses FTDI’s FT232RQ. In this assignment, MM232R needed to be designed according to the datasheet. Besides, switches of four pins also needed to be designed, but only two pins were used in diagram. PIC18F1320, a microcontroller, which features six enhanced power-managed “software controlled” modes, power consumption as low as 0.1 microamps in standby mode and a wide operating voltage range from 2 to 5.5 volts which makes this device ideal for
References: Armstrong, M. K., August, 1999. PCB design techniques for. ELECTRONICS & COMMUNICATION ENGINEERING JOURNAL, pp. 185-194. Unknown, 2003. What is a PCB. [Online] Available at: http://www.wisegeek.com/what-is-a-pcb.htm Unknown, 2004. Microchip. [Online] Available at: http://nnp.ucsd.edu/phy120b/pic_manuals_pdf/pic18F_1320.pdf Unknown, 2007. Microchip. [Online] Available at: http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en010265 Unknown, 2012. PCB. [Online] Available at: http://www.techterms.com/definition/pcb Varteresian, J., 2002. Fabricating Printed Circuit Boards. United States: Elsevier Science & Technology.