Digilent 410-225P-KIT - Manual

P P m m o o d d O O L L E E D D 2 2
™ ™
R R e e f f e e r r e e n n c c e e M M a a n n u u a a l l
Revision: September 18, 2012
Note: This document applies to REV B of the board.
1300 Henley Court | Pullman, WA 99163 (509)
334 6306 Voice and Fax
Doc: 502-225 page 1 of 3
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
Overview
The PmodOLED2 features a parallel
controlled, 4-bit gray scale OLED display,
perfect for embedded applications requiring
complex visual output.
Features include:

a 256x64 pixel WiseChip/Univision UG-
5664ASGGF01 OLED graphic display
panel

5 3/8 ” x 1 3/8” display area

8080 Parallel interface

clock speeds of up to 10MHz

internal display buffer
Functional Description
The PmodOLED2 uses a standard 12-pin
connector to display output on a 256x64 pixel
organic LED (OLED) panel. The graphic
display panel uses the Solomon Systech
SSD1322 display controller.
A parallel interface is used to configure the
display, as well as to send the bitmap data to
the device.
The PmodOLED2 displays the last image
drawn on the screen until it is powered down or
a new image is drawn to the display.
Refreshing and updating is handled internally.
Power Supply
The PmodOLED2 has two field-effect
transistors (FETs) that control the
display’s two
power supplies. The VCI/VDDIO control
toggles the power to the logic of the display,
and the I/O pins, respectively. The VCC control
toggles the power to the OLED display itself.
These two pins have pull-up resistors that turn
off their respective power supplies when
they’re not being driven. These pins are
configured as outputs and driven high to turn
on the power supply.
The UG-5664 display requires a 15V supply.
Header J5 can be used to connect a 15V
supply directly to the 15V supply line. To use
this option, jumper JP1 must be coving “EXT”.
Alternatively, the PmodOLED2 is equipped
with a step-up DC-DC converter, and
therefore, the 15V supply can be generated
from the supply voltage coming from the
development board’s Pmod header. That
supply voltage should be set so that it is
drawing from the 5V rail. There should be a
jumper next to the Pmod header for selecting
between the 3.3V and the 5V supply rail.
The PmodOLED2 has a particular power-
on/power-off sequence that must be followed
to prolong the life of the display.
Power-on sequence:
1. Apply power to VCI.
2. Wait 300ms.
3. Send Display Off command.
4. Initialize display to desired operating mode.
5. Clear screen.
6. Apply power to VCC.
7. Delay 100ms.
8. Send Display On command.