GU128X32F-7806A Noritake Company Inc, GU128X32F-7806A Datasheet - Page 7

• Manufacturer Part Number: GU128X32F-7806A
• Description: VFD MODULE, 128X32, GRAPHIC, 5VDC
• Manufacturer: Noritake Company Inc

Specifications of GU128X32F-7806A

• Resolution: 128 X 32
• Viewing Area (h X W): 20.65mm X 83.05mm
• Supply Current: 250mA
• Supply Voltage Range: 4.75V To 5.25V
• Character Format: Dot Graphic
• Character Type: European
• External Depth: 13mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dot Graphic VFD Module
EXTENDED PORT AND SERIAL COMMANDS
The extended port and serial commands are only valid when the display is connected to the host using the parallel interface.
PORT I/O MODE
The I/O mode gives direct access to the 7 control lines on the serial
connector; HB, MB, TXD, RXD, MISO, MOSI and SCK. Each line can be
individual set to an Input or Output using the ‘PORT CONFIGURE’
command. All inputs include an optional pull-up resistor, 30K-120K in
value. The outputs can source ~5mA and sink ~30mA. There are 3
commands available to configure port, set port level and read port state.
SYNCHRONOUS SERIAL MODE
This mode gives the ability to control external synchronous devices
connected to the serial connector. Data is transmitted and received on
each ‘PORT OUT’ command. The received data byte is buffered until
the ‘PORT READ’ command is executed.
The ‘PORT BUFFER SEND’ command will buffer up to 128 bytes of
data prior to transmission; only the last data byte received is captured
when using this command.
The ‘PORT CONFIGURE’ command will set the MOSI & SCK lines to
outputs, and the MISO line to an input. The HB line is used as an
optional busy input, and the MB line is set to an output. The TXD line is
also set to an output, and this can be used as a reset or device select
control line.
The serial transmission is defined by the ‘DEF H/L’ (default clock level
high or low), ‘CLK EDGE’ (rising or falling clock edge), and the ‘SPEED’
(clock speed) control bits. The ‘HNDSHK’ bit is used to detect the status
of the HB line prior to data transmit. All data is transmitted MSB first.
A ‘STATUS READ’ command can be used to check for completed data
transmission.
Example: -
F4H 82H
F6H 02H
F7H
Example: -
F4H 1BH
F6H 55H
F5H
F5H
F7H
F8H 16H “This is a test string.” - Send character string when HB line is low.
F5H
NORITAKE ITRON VFD MODULES
- Set RXD to input and other ports to
- Turn on LED1&2 by setting HB & MB
- Read port, D1 is the switch state.
- Enable Synchronous mode with busy test; clock speed to
- Send byte 55H to synchronous port when HB line is low.
- Read current status. Wait until TXC is set.
- Read current status. Check if RXC is set.
- Read received byte.
outputs.
low. Enable internal pull-up resistor on
RXD.
125kHz, data clocked on falling edge, default clock level is low.
- Read current status. Wait until TXC is set.
LED1
SW1
LED2
VCC
HB
MB
RXD
GND
Command Structure and Values Copyright 2007 Noritake Co Limited, Japan
PORT CONFIGURE
The TXD port is set high with a ‘1’ and low with a ‘0’. Busy detection is
enabled by setting HNDSHK to a ‘1’. The default clock level is high with
DEF H/L set to a ‘1’, low if ‘0’. The CLK EDGE is set to rising with a ‘1’,
and falling with a ‘0’. The clock speed is set with the SPEED1/0 bits,
00=4Mhz, 01=1Mhz, 10=250kHz, 11=125kHz.
SERIAL SEND
Data is transmitted to the synchronous serial port. If the ‘HNDSHK’ bit is
enabled, transmission will be delayed until the HB line is pulled low.
PORT BUFFER SEND
A maximum of 128-bytes of data is buffered before transmission to the
synchronous serial port. If the ‘HNDSHK’ bit is enabled, transmission is
delayed until HB line is low.
READ PORT STATUS
The current port status is read with RS high. TX PEND shows data is
pending for transmission, TXC transmission completed, and RXC shows
data received. HB IN shows the current state of the ‘HB’ line. TXC is
cleared after status read.
SERIAL READ
The currently buffered data byte can be read with RS high. The host
should first check the RXC bit using the PORT STATUS command. After
reading the data byte, the RXC bit is cleared.
PORT CONFIGURE
A ‘1’ defines the port as an input, ‘0’ an output. All ports are subsequently
set low.
PORT OUT
A ‘1’ sets the corresponding port high, and a ‘0’ sets it low. If the port is
set to an input, a ‘1’ will enable the internal pull-up resistor.
PORT IN
The current port levels are read with RS high.
D7
D7
0
-
D7
D7
D7
1
-
-
HB OUT
D6
D6
HB I/O
0
HB IN
-
D6
D6
D6
GU128x32F-7806A
TXD OUT
MB OUT
D5
D5
MB I/O
MB IN
-
D5
D5
D5
HNDSHK
HB IN
TXD OUT
TXD I/O
D4
D4
TXD IN
GU128x32F-7806A
D4
D4
D4
F4H + SETUP
F6H + DATA
F8H + SIZE + DATA
F5H
F7H
F4H + I/O
F6H + OUT
F7H
TX PEND
DEF H/L
MISO OUT
MISO I/O
MISO IN
D3
D3
D3
D3
D3
CLK EDGE
MOSI OUT RXD OUT
TXC
MOSI I/O
MOSI IN
D2
D2
D2
D2
D2
SPEED1
RXC
RXD I/O
D1
D1
RXD IN
D1
D1
D1
SPEED0
SCK OUT
SCK I/O
D0
D0
SCK IN
-
D0
D0
D0