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	ETM140

ETM140 Multi-purpose Prototyping Board

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Description

ETM140 board has been designed, keeping in mind the requirement of prototyping boards and development kits which can accelerate the task of designers to run application software on target 8051 hardware; thus providing a platform to benchmark their system, save time & expense of building their own application test board and thus enabling them to get their designs to market quickly. ETM140 hardware reference and software application programs also simplify 8051 based hardware and software development.

Features

» P89V51RD2 Microcontroller

» On-chip 1Kb RAM.

» RS232 Serial Interface.

» Real time clock with battery backup.

» On board 512K I2C Serial EEPROM.

» 2 Lines X 16 Character LCD Display.

» PS2 keyboard connector.

» 8 Bit Analog to Digital Converter.

» 8 Bit Digital to Analog Converter.

» 4 X 4 Matrix keyboard.

» Simple keyboard (8 Keys).

» Stepper motor driver circuit.

» Seven segment display.

» Relay circuit.

» Royalty free TCP/IP stack with source for Ethernet / Internet connectivity.

Applications

» ETM140 can be used to Explore the 8051 core & as a Test Platform to download the programs to 89V51RD2 flash to run the Program, check the desired output & if required change the program & download it to the microcontroller flash without removing it from the board.

» The Sample C code provided with the ETM140 board are self explanatory with comments that help you understand the Serial port, LCD, PS/2 Keyboard, Simple keyboard, Matrix keyboard, Seven segment display, LED Display, ADC, DAC, Ethernet module, Relay driver, Stepper motor driver etc programs.

» The ETM140 board removes the burden of hardware development & as the entire PORT Pins are accessible hence further development with the board is easily possible.

Specification Table

Features	ETM150
Microcontroller	P89V51RD2 at 12MHz
Flash	64kB
Serial EEPROM	64kB
Real Time Clock	DS1307
LCD Display	2 Lines X 16 Char
PC Keyboard Interface	PS2 Connector
Serial port	RS232
Analog to digital converter	ADC0804 (8 Bit Single Channel)
Digital to Analog Converter	DAC0808 (8 Bit Single Channel)
Keyboard	Matrix Keyboard (4 X 4) Normal Keyboard (8 Keys)
Stepper Motor Driver Circuit	ULN2803
Seven Segment Display	4 Nos.
Relay Circuit	2 Nos.
LED Display	Common Anode (8 Nos.) Common Cathode (8 Nos.)