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  • VEX Microcontroller

PIC Microcontroller V0.5

P/N: 276-2170

The "brains" of the robot.

The VEX Microcontroller coordinates the flow of information and power on the robot. All other electronic system components must interface to the Microcontroller.

  • Wireless with the 75MHz receiver and transmitter
  • Microchip user processor
  • (8) Motor ports
  • (16) Digital I/O, Analog In
  • (6) Interrupt I/O
  • (1) Serial Port
  • Programmable with easyC, ROBOTC, or MPLAB

Discontinued. We recommend the VEX ARM® Cortex®-based Microcontroller as a replacement option.

$149.99

Discontinued

Overview

The VEX Microcontroller coordinates the flow of information and power on the robot. All other electronic system components must interface to the Microcontroller and function as a cohesive unit. The Microcontroller contains the robot's program and processes all signals received from both human operators and onboard sensor systems. It also manages power allocation on board the robot, and directly controls the motors.

Motor Ports: Connect up to (8) VEX motors or servos.

Interrupt Ports: Interrupts are digital inputs designed for high priority signals that need immediate attention from the Microcontroller.

Digital/Analog Input Ports: 16 multipurpose input/output ports for sensors.

TX/RX Ports: Allow the user to communicate directly with the user processor inside the Microcontroller via a TTL serial port.

Serial Port: Use with the VEX Programming Kit to re-program the Microcontroller.

Rx1 and Rx2 Ports: Connect radio receivers to communicate with the Microcontroller wirelessly from a Transmitter.

Battery Port: Connect a 7.2V power sources, such as the Battery Holder or the VEX 7.2V Robot Battery.

Technical Specifications

(1) VEX Microcontroller
(5) Jumpers
Battery In:
Voltage - 7.2 volts nominal, 5 to 12 volts min/max
Type - Six AA batteries, 7.2v Robot Battery 2000 mAh or 7.2v Robot Battery 3000 mAh
Current - 62 mA for Controller & Receiver plus Motors & Servos

I/O Ports:
(8) Motor Outputs
Usage - For VEX motors or servos
Type - Hobby standard PWM
Refresh - Every 18.5 mSec

(16) Digial I/O, Analog In
Digital In - 50 KHz input frequency
Analog In - 10-bit resolution. 10 μSec access time
I/O Schematic - Schematic

(6) Interrupt I/O
Usage - Measuring Input changes via software interrupt

(1) Tx/Rx Port
Type - TTL Serial
Speed - 115Kb
Label - TX and RX

(1) Serial Port
Usage - Used for reprogramming and debugging
Speed - 115Kb

(2) Rx 1 & Rx2
Usage - Connects to (2) 75MHz receivers

Microcontroller: Microchip PICmicro PIC18F8520
Speed: - 10 MIPS (Million Instructions Per Second)
RAM: - 1800 bytes + 1024 bytes EE2
Flash - 32K program space

Size: 4.5in W x 3.9in L x 1.1in H

Weight: .278 lbs (126 grams)