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The PIC18F2520 Quick Project Box has everything you need for
building simple control and data collection devices complete with plastic
enclosure. Hardware included in the basic box:
- 5.5mm OD, 2.5mm ID power connector with 8-18VDC reverse
polarity protected input, 5V@500mA output regulator: Imax = 1 / (Vin -
6).
- PIC18F2520 processor with I/O wired out to pads.
Programming is via a 6 pin dual row header using the standard Microchip ICD/ICSP pin out.
- Standard 14 pin LCD interface connector wired out to
pads for
4 bit transfer
mode with a 10K pot for contrast adjustment.
- RS232 serial interface wired via jumpers
to the processor RC6 and RC7 pins. The RS232 TXD and RXD signals are
connected to the DB9-F connector and hand shaking signals are connected
as loop backs: RTS+CTS, DTR+DSR.
- DB9-M connector wired out to pads for user
connections.
- May be operated up to 32MHz +/-1% using
the internal 8MHz R/C oscillator and x4 multiplier without the addition of
any external parts: Port pins RA6 and RA7 are GPIO in this
configuration.
- Two box end caps of the ordered color are
supplied without cut-outs to allow removal of one or both connectors for
the final user assembly.
Optional (User supplied) hardware:
- High speed system Crystal/Capacitor connections to RA6/RA7:
Up to 10 MHz crystal when using the x4 multiplier for a 40MHz system clock or
20MHz crystal without the multiplier. Typical component is the ECS
ECS-100-18-4 or equivalent with
two 33pF/0603 capacitors.
- Low speed sleep Crystal/Capacitor connections to RC0/RC1:
32.768KHz is the standard. Typical component is the Epson
MC-206 32.7680KA-A0 or
equivalent with two 33pF/0603 capacitors.
- TL431 adjustable shunt regulator circuit wired to RA3 for
A/D reference voltage.
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