Robot MarketPlace - VEX Robotics PIC Micro Controller

VEX Robotics PIC Micro Controller
The 'Brains' behind the programmable VEX Robotics System.

$149.99

The Vex Programmable Micro Controller coordinates the flow of all information and power on the robot. All other electronic system components must be connected to the Micro Controller in order to function.
Note: Requires 7.2V Robot Battery to function. Vex programming software sold separately.

Inputs and Outputs
Battery Input	7.2V nominal; 6-9V min/max input range
Battery Type	6 AA batteries (not included), or VEX Robotics Power Pack
Interrupt Inputs	6
Digital I/O	16 max with no analog, each can be input or output (shared with analog)
Input Impendence	Analog/Digital - The input consists of 470K pull-up to +5V and a series resistance of 1K to the uP. Interrupts - The output consists of a series of resistence of 1K to the uP.
Analog Inputs	16 max with no Digital; 10-bit resolution (shared with digital)
Digital/Analog as Inputs	3 dB bandwidth of 150 kHz, weak pull-up of 470k-ohms to 5.0V, need 0.0-0.6V for a low and 4.0-5.0V for a high
Interrupts as Inputs	3 dB bandwidth of 150 kHz, weak pull-up of 47k-ohms to 5.0V, need 0.0-0.6V for a low and 4.0-5.0V for a high
Digital/Analog Interrupts as Outputs	As outputs these ports can drive an open circuit to 0.6V or lower for a low and 4.0V or higher for a high. They can drive a 1mA load to 1.6V or lower for a low and 3.0V or higher for a high.
PWM Outputs	As outputs these ports can drive an open circuit to 0.6V or lower for a low and 4.0V or higher for a high. They can drive a 1mA load to 1.6V or lower for a low and 3.0V or higher for a high.
Digital Input Frequency	50 KHz
Analog Input Access	10 Sec
Motor Output	8 PWM Outputs for motors or servos, refreshed every 18.5mSec
Serial Ports	TTL (115Kb) - Serial Port and TX/RX on Digital/Analog port
Pinout	Digital/Analog, Interrupts, Motor Outputs: Outside pin (closest to the controller edge) Ground Digital/Analog, Interrupts: Center pin (or middle pin) + 5V, 1A Max combined total from all pins Motor Outputs: Center pin (or middle pin) + Battery Power, 4A Max combined total from all pins Digital/Analog, Interrupts, Motor Outputs: Inside pin (furthest from the controller edge) Signal/Control line
User programmable Microcontroller
User Microcontroller	Microchip PICmicro PIC18F8520
Processor Speed	10 MIPS (Million Instructions Per Second)
Variable Space	1800 bytes + 1024 bytes EE2
Program Space	32K
Programming	PIC C
Programming Tools	Microchip MPLAB IDE or easyC
Erase/Write Cylces	100,000
Data Retention	>40 years
General Features
Size	4.5 x 3.9 x 1.1 in.
Weight	0.28 lbs.
Battery	7.2V Rechargable NiCad
Charging	Recharge when battery voltage < 7.1V, full charge 7.8V typical
Current Draw	62 mA - Controller & Receiver min, 5mA to 2A per Motor, 20mA to 1.5 A per Servo