| Inputs and Outputs |
| Battery input |
7.2 volts nominal, 6 to 9 volts 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 a 470K pull-up to +5V and a series resistance of 1K to the uP.
Interrupts - The input consists of a series resistance of 1K to the uP. More info - input Schematic. |
| 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 5.0 volts,
need 0.0 to 0.6 volts for a low and 4.0 to 5.0 volts for a high |
Interrupts
as inputs |
3 dB bandwidth of 150 kHz, weak pull-up of 47k-ohms to 5.0 volts,
need 0.0 to 0.6 volts for a low and 4.0 to 5.0 volts 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 4.0 volts or higher for a high.
They can drive a 1 mA load to 1.6v or lower for a low and 3.0 volts 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 4.0 volts or higher for a high.
They can drive a 1 mA load to 1.0v or lower for a low and 3.6 volts or higher for a high. |
| Digital input Freq. |
50 KHz (typical) |
| Analog input Access |
10 μSec |
| 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) + 5 Volts, 1 Amp Max combined total from all pins
Motor Outputs: Center pin (or middle pin) + Battery Power, 4 Amps Max combined total from all pins
Digital/Analog, Interrupts, Motor Outputs: Inside pin (furthest from the controller edge) Signal / Control line
|