.Need Custom Made Microcontroller Project / System?Other Electronics Project Categories.These microcontroller based project ideas are innovative systems yet to be implemented. These systems help students in final years, engineers in their work research and also researchers in their research work. We provide the most innovative ideas on microcontroller based projects to help students in their final year projects. Below final year project ideas and topics guide electronics learners in how systems are built from scratch.The above listed projects are electronics systems that use a variety of microcontrollers to demonstrate various systems. NevonProjects provides the largest variety of microcontroller based projects ideas for study and research.The above list is compiled by our developers and researchers to help you choose the best microcontroller based projects for your research and development.

1. Microprocessor 8085 Based Mini Projects Pdf

These projects make use of microcontrollers to achieve desired functions and read desired inputs. Microcontrollers are programmable units that allow the development of efficient electronics systems with ease.

Microcontrollers allow developers to receive sensor inputs as well as procide desired output at desired pins which is a very important feature needed for electronics system development and research. The above mentioned microntroller based projects list consists of a variety of projects ideas that use microcontrollers to achieve various functionalities.

. Address decode and chip select for the USART. The default USART I/O address is 0x08. Clock divider that divides the CPU clock to obtain USART transmit and receive clock.

The divisor value depends on the CPU speed. Fuse maps with divide by 10 and 20, divide by 13 and 26, and divide by 16 and 32 ratios are provided to support common 8085A CPU clocks: 3.072 MHz, 4 MHz, 4.9152 MHz, 6.144 MHz, and 8 MHz. Address decode and chip select for the ROM and SRAM. The address decode logic include additional /SWAPMEM input, which by default is configured to swap address mapping of ROM and RAM.Please refer to the Simple Programmable Logic Device section below for more details regarding the SPLD configuration and programming.The MiniMax8085 includes a 40-pin extension connector (P4), that features the 8085A address and data buses, and control signals.

Please refer to the Jumpers and Connectors section below for the connector pinout and signals description. Jumpers and Connectors. Jumpers JP1 and JP2 - ROM ConfigurationThese jumpers configure how pins 1 and 27 of the ROM IC (U3) are connected. The jumper settings are printed on the bottom side of the PCB. ROM TypeJumper JP1 Position - ROM Pin 1 ConnectionJP2 Position - ROM Pin 27 Connection27C128, 27C64, 27128, 27642-3 - pin 1 connected to VCC1-2 - pin 27 connected to VCC27C2562-3 - pin 1 connected to VCC2-JP1 pin 1 (jumper installed vertically), pin 27 connected to A1428C2561-2 - pin 1 connected to A142-3 - pin 27 connected to /WR29C2562-JP2 pin 3 (jumper installed vertically), pin 1 connected to /WR2-JP1 pin 1 (jumper installed vertically), pin 27 connected to A14Jumper JP3 - USART Clock Frequency. Jumper PositionDescription1-2307.2 kHz - 19200 bps (default) or 2400 bps, depending on USART configuration614.4 kHz - (For 6.144 MHz and 8 MHz CPUs) 38400 bps (default) or 4800 bps, depending on USART configuration2-3153.6 kHz - 9600 bps (default) or 1200 bps, depending on USART configuration307.2 kHz - (For 6.144 MHz and 8 MHz CPUs) 19200 bps (default) or 2400 bps, depending on USART configurationConnector P1 - POWERConnect regulated +5V power supply to this connector.

PinDescriptiontip (the inner contact)Positive terminal - +5Vbarrel / sleeveNegative terminal - groundConnector P2 - SIOP2 exposes the 8085A CPU serial input and output lines. PinDescription1Ground2SOD / Serial Output Data3SID / Serial Input DataConnector P3 - SERIAL P3 is the serial port connector. It is normally used for connecting a console or terminal.

Microprocessor 8085 Based Mini Projects Pdf

P3 uses pinout similar to that of IBM AT serial port (with some signals missing). Use a null modem cable to connect to a PC.

Pin NumberSignal NameDescription and Notes1DCDCarrier Detect; Not used - Not connected on the SBC2RXReceive Data; Input to SBC3TXTransmit Data; Output from SBC4DTRData Terminal Ready; Not used - Not connected on the SBC5Signal GroundConnected to the SBC GND signal6DSRData Set Ready; Not used - Not connected on the SBC7RTSRequest to Send; Output from SBC8CTSClear to Send; Input to SBC9RIRing Indicator; Not used - Not connected on the SBCShieldDE9 ShieldConnected to the SBC GND signalConnector P4 - EXTENSIONP4 exposes the 8085A CPU address and data buses, and control signals. The frequency divider is implemented as a synchronous counter, where all the outputs change their state simultaneously with the rising edge of the Clock signal. To achieve this, the SPLD is configured in registered mode (this is done automatically, by the SPLD assembler). In this mode the SPLD outputs with.R suffix (Q0.R - Q4.R) are configured as D flip-flops, and their logic equations describe the next state of the flip-flops (the values on their D inputs, that will be latched with the Clock signal). For example, in the Mini8085-4.9152MHz.pld the next state of Q0 output is defined to be the inverse of its current state: Q0.R = /Q0. The Q0 - Q2 outputs are the outputs of intermediate stages of counter/divider, and they are not used in the MiniMax8085.

The USART clock inputs are connected to either Q3 or Q4 output, depending on the position of the jumper JP3, resulting in either divide by 10 or 20 for 3.072 MHz CPU clock (using the Mini8085-3.072MHz.pld fuse map) or in divide by either 16 or 32 for 4.9152 MHz CPU clock (using the Mini8085-4.9152MHz.pld fuse map). CMOS parts are preferred for lower power consumption. 80C85 (CPU) - Any type in DIP-40 package will do. Use 6.144 MHz crystal for 3 MHz parts.

Such parts usually don't have any numeric suffix in the part name. For example Intel P8085AH is a 3 MHz part, while Intel P8085AH-2 is a 5 MHz part. CMOS parts: MSM80C85A or M80C85A (OKI), CA80C85B (Calmos, Tundra), IM1821VM85A (Soviet/Russian Clone). NMOS parts: P8085A (Intel, AMD), P8085AH, P8085AH-2, P8085AH-1 (Intel, newer HMOS process, 3 MHz, 5 MHz, and 6 MHz parts respectively), M5L8085AP (Mitsubishi), TMP8085AP (Toshiba), and so on. 80C51A (USART) - Any type in DIP-28 package. 28C256 (EEPROM, EPROM) - The board support a wide variety of ROMs.

Note that JP1 and JP2 jumpers need to be set according to the ROM type. 28C256 EEPROM: Atmel/Microchip AT28C256, Xicor X28C256. CMOS UV EPROMs: 27C256 UV EPROMs (32 KiB), 27C128 UV EPROMs (16 KiB), 27C64 UV EPROMs (8 KiB). NMOS UV EPROMs: 27256 UV EPROMs (32 KiB), 27128 UV EPROMs (16 KiB), 2764 UV EPROMs (8 KiB). 62256-like NVRAM (32 KiB).

AT29C256 Flash ROM. 62256 (SRAM) - A low-power CMOS SRAM 32KiB, in DIP-28 wide (600 mils) packages. Q: Board doesn't work.

No output on the serial console. A1: Make sure that the ROM type is configured properly using JP1 and JP2 jumpers. A2: The firmware configures USART with RTS/CTS flow control enabled.

Check that your terminal emulation software has RTC/CTS flow control enabled, and that you're using a null-modem cable with RTS and CTS signals on one side connected to CTS and RTS signals on the other side. Alternatively you can connect pin 7 (RTS) and pin 8 (CTS) on the P3 connector, and use a three wire serial cable with TX, RX, GND signals only. Q: Board works unreliably, gets randomly stuck when board is touched, requires reset every so often. A: Assuming that DS1210 is installed, make sure you have 3V-4.5V battery connected to connector P5 (observe polarity). Alternatively you can put a jumper across P5, or remove DS1210 and install jumpers instead as indicated on the PCB.References.