PMODOLED_RM [ETC]
PmodOLED⢠Reference Manuall; PmodOLEDâ ?? ¢参考手册册
| 型号： | PMODOLED_RM |
| 厂家： | 
ETC |
| 描述： | PmodOLED⢠Reference Manuall |
| 文件： | 总2页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PmodOLED™ Reference Manual
Revision: October 19, 2011
1300 NE Henley Court, Suite 3
Pullman, WA 99163
(509) 334 6306 Voice | (509) 334 6300 Fax
Note: This document applies to REV A of the board.
Overview
The PmodOLED features an SPI-controlled
monochrome OLED display, perfect for
embedded applications requiring small,
complex visual output.
Features include:
•
a 128x32 pixel 0.9’’ WiseChip/Univision
UG-23832HSWEG04 OLED graphic
display panel
•
•
•
standard SPI interface
clock speeds of up to 10MHz
internal display buffer
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 low to turn on
the power supply.
Functional Description
The PmodOLED uses a standard 12-pin
connector to display output on a 128x32 pixel
organic LED (OLED) panel. The graphic
display panel uses the Solomon Systech
SSD1306 display controller.
The PmodOLED 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 VDD.
2. Send Display Off command.
3. Initialize display to desired operating mode.
4. Clear screen.
An SPI interface is used to configure the
display, as well as to send the bitmap data to
the device.
5. Apply power to VBAT.
6. Delay 100ms.
7. Send Display On command.
The PmodOLED 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-off sequence:
1. Send Display Off command.
2. Power off VBAT.
3. Delay 100ms.
Power Supply
The PmodOLED has two field-effect transistors
(FETs) that control the display’s two power
supplies. The VDDC control toggles the power
to the logic of the display. The VBATC control
toggles the power to the OLED display itself.
4. Power off VDD.
Doc: 502-222
page 1 of 2
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
PmodOLED Reference Manual
Interface
For more information on the OLED display
interface, see the UG-2832HSWEG04
datasheet available online or from Univisio.
The display has a D/C pin (display or
command select) that determines whether
bytes sent to the display are interpreted as
commands or as display data. The D/C pin is
set high for display buffer access and low for
command access.
The OLED display uses a compatible
command set from the SSD1306 device. For
more information, see the SSD1306 datasheet
available at www.solomon-systech.com.
The RES pin is used to reset the SSD1306
display controller. The RES pin is driven low
for reset and driven high for normal operation.
The low-going reset pulse must be a minimum
of 3us (microseconds) in duration for the
display controller to reset correctly.
The UG2832 display is a serial device that is
accessed using SPI. It is a write-only device,
so it is not possible to read the display buffer
contents or status from the panel. The
maximum SPI clock frequency is 10Mhz. The
CS (Chip Select) pin has to be held low for the
display to receive data over the SPI interface.
Digilent has libraries for the PmodOLED that
provide functions for initializing the display and
rendering simple text and graphics onto the
display. These libraries can be used as-is or as
a starting point for a more sophisticated
graphics library. They are available on the
PmodOLED product page at
www.digilentinc.com.
Interface Connector Signal Description
Connector J1
Pin
1
Signal Description
CS
SPI Chip Select (Slave Select)
2
3
4
SDIN
None
SCLK
D/C
SPI Data In (MOSI)
Unused Pin
SPI Clock
7
Data/Command Control
Power Reset
VBATC VBAT Battery Voltage Control
8
RES
9
10
VDDC
VDD Logic Voltage Control
Power Supply Ground
Power Supply
5, 11 GND
6, 12 VCC
www.digilentinc.com
page 2 of 2
Copyright Digilent, Inc. All rights reserved. Other product and company names mentioned may be trademarks of their respective owners.
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