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|  | $14.00 | R40i, bare PCB only (see image below). |  
|  | $19.00 | R40i-KIT, PCB plus basic parts kit (includes: 40 pin socket, 4MHz resonator,
DC power receptacle, ICSP header, 2 pin header with shorting jumper, 47uF cap, 0.1uF caps x 5, 470 and 10k Ohm res, Green
LED, 1N4148 diode, & 78L05). |  
|  | $25.25 | R40i-IO, PCB, basic parts kit, and I/O parts kit (includes: 2 push buttons,
2N2222 transistor, 2 LEDs, 1 piezo buzzer, 470 Ohm res x 2, & 10k Ohm res x 3). |  
|  | $25.25 | R40i-BUILT, Fully assembled and tested PCB (includes parts from basic and I/O kits). |  
 
| General Features: 
Microprocessor:Overall board dimensions 3.00" x 4.00".PCB is a 2-layer board with solder masks on both sides and a silk screen graphic.26 x 14 pin prototyping area (364 pins total).Power and GND bus lines run the length of the prototyping area on both sides (not included in proto area total pin count).All 33 microcontroller port pins and ~MCLR pin brought out to a clearly labeled strip along the top of the prototyping area.ICSP programming header.4 corner mounting holes. 
Oscillator Options:Compatible with all MicroChip PIC 40 pin DIP packaged microprocessors.PIC16C74B, 765, 774,PIC16F74, 747, 77, 777, 871, 874A, 877A,PIC18F4220, 4320, 4331, 4410, 442, 4420, 4431, 4439, 4455, 448, 452, 4510, 4515, 4520, 4525, 4539, 458, 4550, 4585, 4610, 4620, 4680 (and others). 
Power Supply Options:Crystal or ceramic resonator with external capacitors (DC-20MHz).Ceramic resonator with internal capacitors (DC-20MHz).RC oscillator. 
User I/O Options:Footprints provided for either TO-92 or TO-220 voltage regulators.Footprint provided for DC power receptacle.Power-on LED. 
4 push buttons.4 LEDs.Piezo buzzer. 
   
 
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