Altera MAX II - Manual (Page 15)

Altera Corporation Development Kit Version 1.1.0 2–7
July 2005 MAX II Development Kit Getting Started User Guide
Getting Started
d. Pressing S2 a fourth time will display the value of I
IO
.
e. Pressing S2 a fifth time will display the board temperature,
which should be between 18° C and 23° C, depending on your
room temperature.
f. Pressing S2 a sixth time will display the LED test—LEDs 1-4
should light up and turn off one at a time.
g. Pressing S2 a seventh time will display the SRAM test—the
LCD will indicate Pass or Fail.
h. Pressing S2 for the eighth time will display the LCD test—note
the text: “LCD Does Work!”
i. Pressing S2 for the ninth time returns to the start up screen. The
LCD display reads: “MAX II by Altera”
If all tests pass, the MAX II development board is ready to use.
Altera provides several demos and reference designs with the MAX II
Development Kit to help you get started building applications and to
demonstrate the features of the MAX II device. The next two sections
describe the functionality of these designs.
Demo Designs The MAX II Development Kit includes three demos that illustrate
features of the MAX II device:
■ “Power-Up Time Demonstration”
■ “Low Power Demonstration”
■ “Real-Time ISP Demonstration”
Power-Up Time Demonstration
MAX II devices power up and configure very quickly and may be used to
perform vital power-up functions. In order to allow users to investigate
the fast power-up time of a MAX II device, the board is equipped with a
circuit that allows users to observe the time it takes for a MAX II device
to power up under a variety of different power supply loading
conditions. This circuit allows users to increase or decrease the load on
the V
CCINT
voltage plane. As this load is increased, the ramp time (or slew
rate) of the MAX II V
CCINT
voltage increases. Using this circuit you can
mimic the load that the MAX II device’s V
CCINT
voltage plane will have
on a custom piece of hardware. This knowledge allows you to verify that
the MAX II device will be powered up and configured quickly enough to
perform whatever power up functions are required in the user system.