| Document Number: | E-M-0110-00 |
| Issue Date: | 05/18/2012 |
Noritake Co., Inc.
Electronics Division Headquarter
2635 Clearbrook Drive
Arlington Heights, IL 60005
Toll free: (800) 779 - 5846
Phone: (847) 439 - 9020
support.ele@noritake.com
www.noritake-elec.com |
East Coast
New Jersey Branch
15-22 Fair Lawn Ave.
Fair Lawn, NJ 07410
Toll free: (888) 296 - 3423
Phone: (201) 475 - 5200
Fax: (201) 796 - 2269
|
Midwest, Canada, and Mexico
Chicago Branch
2635 Clearbrook Dr.
Arlington Heights, IL 60005
Toll free: (800) 779 - 5846
Phone: (847) 439 - 9020
Fax: (847) 593 - 2285
|
West Coast
Los Angeles Branch
21081 S. Western Ave. Ste 180
Torrance, CA 90501
Toll free: (888) 795 - 3423
Phone: (310) 320 - 1700
Fax: (310) 320 - 2900
|
You must agree this terms and conditions. This software is
provided by Noritake Co., Inc "AS IS" and any express or
implied warranties, including, but not limited to, the implied
warranties of merchantability and fitness for a particular
purpose are disclaimed. In no event shall the copyright owner
or contributors be liable for any direct, indirect, incidental,
special, exemplary, or consequential damages (including, but
not limited to, procurement of substitute goods or services;
loss of use, data, or profits; or business interruption)
however caused and on any theory of liability, whether in
contract, strict liability, or sort (including negligence or
otherwise) arising in any way out of the use of this software,
even if advised of the possibility of such damage.
If this document is distributed with software that includes
an end user agreement, this document, as well as the software
described in it, is furnished under license and may be used
or copied only in accordance with the terms of such license.
Except as permitted by any such license, no part of this
document may be reproduced, stored in a retrieval system, or
transmitted, in any form or by any means, electronic,
mechanical, recording, or otherwise, without the prior
written permission of Noritake Co., Inc. Please note that
the content in this document is protected under copyright law
even if it is not distributed with software that includes
an end user license agreement.
The content of this document is furnished for informational
use only, is subject to change without notice, and should
not be construed as a commitment by Noritake Co., Inc.
Noritake Co., Inc. assumes no responsibility or liability
for any errors or inaccuracies that may appear in the
informational content contained in this document.
Any references to company names in sample codes are for
demonstration purposes only and are not intended to refer to
any actual organization.
Noritake and Itron are either registered trademarks or
trademarks of Noritake Co., Inc. in the United States and/or
other countries.
© 2012 Noritake Co., Inc. All rights reserved
Noritake Co., Inc.,
2635 Clearbrook Drive,
Arlington Heights, IL 60005, USA.
The GU-U100 is a graphic vacuum fluorescent display
module meant to replace graphic LCDs based on the
KS0108 chipset.
On top of supporting all of the common KS0108 commands,
GU-U100 adds the unique features of screen brightness
and power save mode.
Replacing LCDs
Code written for KS0108 can be used to control the GU-U100.
Depending on the LCD being replaced, slight modifications
may be necessary.
The direction of chip select (CS) or
slave select (SS) may be different.
The GU-U100's parallel interface chip select is
active high, meaning the device accepts commands only
when CS is 1.
Some LCDs expect chip select to be active low, meaning
the device is active only when CS is 0.
The number of display segment driver chips may be different.
If the code was written for more chips than is available
on the GU-U100, only the left-most or top-most portions
of the expected screen image will be visible.
Display Segment Driver Chips
The display is divided into 64×64-dot segments
arranged horizontally in horizontal mode and
vertically in vertical mode.
Each of these segments is controlled by a separate chip.
GU128x64E-U100 has two chips.
These chips do not communicate information such
as the display memory or current x and y position.
These must be set specifically for each chip.
However, screen brightness and power save mode
affect the whole module and are shared.
The first chip controls the left side of the
screen in horizontal mode and the top half in
vertical mode. The second chip controls the
right side in horizontal mode and the bottom
half in vertical mode.
Both chips cannot be accessed simultaneously.
Memory Layout
Horizontal Mode
The address and bit value are calculated:
page = y/8
bit = 1 << y%8
addr = page*64 + x
Each controller has a 64×64-dot memory buffer
representing half of the image on the screen.
- Each dot is represented by one bit in memory
- Memory is accessed by bytes (8 bits)
- The lowest bit represents the top-most dot
- Each byte represents 8 vertical dots
- Bytes are laid out horizontally
- Each page (64 bytes) represents one row: 64×8 dots
- The next page (starting from byte 64) represents the
next vertical 8 dots
Vertical Mode
The address and bit value are calculated:
page = x/8
bit = 1 << x%8
addr = page*64 + y
Each controller has a 64×64-dot memory buffer
representing half of the image on the screen.
- Each dot is represented by one bit in memory
- Memory is accessed by bytes (8 bits)
- Each byte represents 8 horizontal dots
- The lowest bit represents the right-most dot
- Bytes are laid out vertically
- Each page (64 bytes) represents one row: 8×64 dots
- The next page (starting from byte 64) represents the
next horizontal 8 dots
Reading and Writing
Each chip keeps track of the current X and Y values
(called the cursor).
After every memory read or write is executed, the
X counter increments. After X is 63, the counter
wraps back around to 0. The Y counter is not changed.
The library increments and wraps the value of
Y after wrapping in the X direction.
Installation
This library is written for Atmel AVR microcontrollers.
Demo projects use AVR Studio 4 and Atmel Studio 6.
- Download the code library.
- Unzip the library file to your work area.
- Extract the demo folder into the folder for the GU-U100 code library.
- Set the configuration options in config.h included with the code library.
See the Configuration section.
- Open the Demo.aps project file with AVR Studio 4
or Demo.atsln in Atmel Studio 6.
Configuration
The library is configured by setting preprocessor values
in the config.h file in the src directory
of the library.
The library provides support for using the module in
either of two modes: horizontal or vertical.
Define NORITAKE_VERTICAL to match
the mode:
- 0 - Horizontal
- 1 - Vertical
Consult the module specification for setting the
jumpers to select the interface.
GU-U100 offers parallel and serial interfaces.
The interface is controlled by NORITAKE_INTERFACE.
- 0 selects parallel (module default)
- 1 selects one of the serial interfaces.
NORITAKE_SERIAL must be set to
the correct serial interface type:
1 - Type 1: CU-UW
2 - Type 2: SPI
3 - Type 3: Signal Separate
The library must be told which pins connect the host to the module.
Each signal has a preprocessor variable ending with
_PORT and _PIN.
E.g. for the chip select 1 pin:
#define CS1_PIN 3
#define CS1_PORT PORTA
Parallel
#define DATA_PORT PORTD
#define RS_PIN 0
#define RS_PORT PORTA
#define RW_PIN 1
#define RW_PORT PORTA
#define E_PIN 2
#define E_PORT PORTA
#define CS1_PIN 3
#define CS1_PORT PORTA
#define CS2_PIN 4
#define CS2_PORT PORTA
#define RESET_PIN 5
#define RESET_PORT PORTA
Parallel is the fastest interface but uses the
most pins. Each signal is controlled by a separate pin.
Code that was written for LCDs will use the parallel interface.
Minor modifications may be necessary as discussed in
the Replacing LCDs section.
DATA - data bits 0 - 7 (must be on pins 0 - 7 of given port)
RS - command (0) / data (1) signal
RW - write (0) / read (1) signal
E - enable signal
CS1 - chip select 1 (left side or top)
CS2 - chip select 2 (right side or bottom)
RST - reset module, active low
Serial Interface Type 1: CU-UW
#define SIO_PIN 4
#define SIO_PORT PORTG
#define CS_PIN 7
#define CS_PORT PORTB
#define SCK_PIN 3
#define SCK_PORT PORTG
#define RESET_PIN 0
#define RESET_PORT PORTA
This interface uses the minimum number of pins,
but requires up to two bytes to be sent per
data item or command. Data is input and output
over the same line.
SI/SO, CS, SCK, and RST lines are used.
The CS (chip select) here is for the entire module.
It is not the same as CS1 or CS2.
A status byte must be sent when CS is lowered.
This status byte sets the state of
CS1, CS2, RW, and RS.
Commands and data may be sent continuously
without re-sending this status byte until
CS is raised
or the status of CS1,
CS2, RW, or RS needs to
change.
After this, commands and data bytes
are sent or received.
SIO - I/O pin
CS - module chip select
(not to be confused with CS1 and CS2)
SCK - synchronous serial clock
RST - reset module, active low
Serial Interface Type 2: SPI
#define SO_PIN 4
#define SO_PORT PORTG
#define SCK_PIN 3
#define SCK_PORT PORTG
#define RESET_PIN 0
#define RESET_PORT PORTA
#define CS2_PIN 1
#define CS2_PORT PORTA
#define CS1_PIN 2
#define CS1_PORT PORTA
#define SI_PIN 3
#define SI_PORT PORTA
This interface allows you to use the module on an
SPI bus as two slave devices selected by CS1 and CS2.
Data is sent to the module on a separate line from
data received from the module.
SO, SCK, RST,
CS1,
CS2,
and SI lines are used.
A status byte similar to the Type 1 interface must
be sent to change RW and RS.
SO - output (data/status) sent from the module to the host
SCK - synchronous serial clock
RST - reset module, active low
CS1 - chip select 1 (left side or top), active low
CS2 - chip select 2 (right side or bottom), active low
SI - input (data/commands) sent to the module from the host
Serial Interface Type 3: Signal Separate
#define RS_PIN 7
#define RS_PORT PORTB
#define SCK_PIN 3
#define SCK_PORT PORTG
#define RESET_PIN 0
#define RESET_PORT PORTA
#define CS2_PIN 1
#define CS2_PORT PORTA
#define CS1_PIN 2
#define CS1_PORT PORTA
#define SI_PIN 3
#define SI_PORT PORTA
This has the potential to be the fastest serial
interface since no status byte ever need be sent.
Since there is no pin to output from the module,
many methods may be restricted in use since they
rely on reading the display memory.
This interface is primarily useful for
simple or pre-rendered high-speed animation
with fewer pins than the parallel interface.
RS, SCK, RST,
CS1, CS2, and SI lines are used.
RS - command (0) / data (1) signal
SCK - synchronous serial clock
RST - reset module, active low
CS1 - chip select 1 (left side or top), active high
CS2 - chip select 2 (right side or bottom), active high
SI - input (data/commands) sent to the module from the host
