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PIC18F2550 Dev. Board, USB, XBee socket, Bootloader (MuIn USB) US$20.00

PIC18F2550 Dev. Board, USB, XBee socket, Bootloader (MuIn USB)

The "MuIN USB" is a demoboard useful for experimentation with the PIC18F2550 microcontroller. It can be used as a simple interface between computers and other devices using USB, for servo command control via USB, or for control of I2C devices via USB. The USB communication acts as a serial COM port or as an HID device. The chip comes with a bootloader that can be used to load new firmware without the need of a external programmer.

PIC18F2550 Development Board Features

  • Equipped with an 8-bit Microcontroller with SIE USB on board (Microchip PIC18F2550)
  • Power supply: 6 to 9V DC
  • Power supply by external source or by USB port
  • TTL and CMOS compatibles inputs
  • USB 2.0 Full Speed
  • Clock @ 48 MHz (12 MIPS)
  • Can be used stand-alone or as a combo
  • Up to 32 endpoints, 64 bytes each
  • Microchip USB Stack compatible (all devices)
  • Preloaded Microchip HID USB Bootloader 2.6

PIC18F2550 Development Board Connectors

Please refer to this diagram along with the descriptions below.

The main connectors are divided into five groups of four contacts each. The first four groups are general-purpose I/O. The fifth group is used for I2C communication. The signal order for the first four groups is:

  • 1. GND
  • 2. V+ (5V or Vin selectable by a jumper on ports A and B except B0 and B1; 5V on others)
  • 3. Signal 1
  • 4. Signal 2
Signal 1 and Signal 2 are connected together and can be used for double connections on the same signal.

Group 1

  • RB0 B0 (I2C sda)
  • RB1 B1 (I2C scl)
These are the GPIO used by I2C. If I2C is used, these connections must disconnected or can be used to connect other I2C devices.

Group 2

  • RB2 B2
  • RB3 B3
  • RB4 B4
  • RB5 B5
  • RB6 B6
  • RB7 B7
B6 and B7 are PGC and PGD signals used by ICSP and debug. Take care using these pins if you use a debug tool or a classic ICSP programmer.

Group 3

  • RA0 A0
  • RA1 A1
  • RA2 A2
  • RA3 A3
  • RA4 A4
  • RA5 A5
These pins can be used as GPIO or as Analog inputs. The LED is connected to RA4; it cannot be used as analog input.

Group 4

  • RC0 C0
  • RC1 C1 (PWM 2)
  • RC2 C2 (PWM 1)
C1 and C2 are used as PWM outputs if PWM is used.

Group 5

  • GND
  • V+
  • SDA
  • SCL
By soldering the jumper on the back of the board, the pull-up resistor on the I2C line is enabled. The pull-up resistor can be connected on 5V or 3.3V, but the function of I2C is not guaranteed on 3.3V.

PIC18F2550 Development Board Resources

Optional Recommended Products for this Item
USB 2.0 Cable, 6ft. A-Male / Mini-USB (5-pin) B-Male+ US$6.00

This product was added to our catalog on Tuesday 19 April, 2011.


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