P0528 Terasic Technologies Inc, P0528 Datasheet - Page 34

• Manufacturer Part Number: P0528
• Description: BOARD DEV DE1 ALTERA
• Manufacturer: Terasic Technologies Inc
• Type: FPGAr

Specifications of P0528

• Contents: DE1 Board, Power Supply, USB Cable, Plastic cover and software
• For Use With/related Products: Cyclone II 2C20
• For Use With: P0033 - BOARD ADAPTER HSMC TO GPIOP0006 - BOARD ADAPTER THDB-SUMP0001 - MODULE DIGITAL CAMERA 5MP (D5M)P0307 - KIT DEV 4.3" LCD TOUCH PANEL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DE1

4.5 Using the Expansion Header
The DE1 Board provides two 40-pin expansion headers. Each header connects directly to 36 pins on
the Cyclone II FPGA, and also provides DC +5V (VCC5), DC +3.3V (VCC33), and two GND pins.
Figure 4.10 shows the related schematics. Each pin on the expansion headers is connected to a
resistor that provide protection from high and low voltages. The figure shows the protection
circuitry for only four of the pins on each header, but this circuitry is included for all 72 data pins.
Table 4.7 gives the pin assignments.
Signal Name
EXT_CLOCK
CLOCK_27
CLOCK_50
CLOCK_24
Figure 4.8. Schematic diagram of the clock circuit.
Table 4.5. Pin assignments for the clock inputs.
PIN_D12, PIN_E12
PIN_A12, PIN_B12
FPGA Pin No.
PIN_M21
PIN_L1
32
24 MHz clock input from USB Blaster
External (SMA) clock input
27 MHz clock input
50 MHz clock input
Description
DE1 User Manual