GU140X16J-7806A Noritake Company Inc, GU140X16J-7806A Datasheet - Page 8

• Manufacturer Part Number: GU140X16J-7806A
• Description: VFD MODULE, 140X16, GRAPHIC, 5VDC
• Manufacturer: Noritake Company Inc

Specifications of GU140X16J-7806A

• Resolution: 140 X 16
• Viewing Area (h X W): 18.8mm X 102.75mm
• Supply Current: 250mA
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: -40°C To +85°C
• Character Format: Dot Graphic
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dot Graphic VFD Module
ASYNCHRONOUS SERIAL MODE
This mode gives the ability to control external asynchronous devices
connected to serial connector. Data is transmitted on each ‘PORT OUT’
command. Data received is held within a 1 byte buffer until the ‘PORT
READ’ command is executed.
The ‘PORT BUFFER SEND’ command will buffer up to 128 bytes of
data prior to transmission.
The ‘PORT CONFIGURE’ command will set the TXD & MB lines to
outputs, and the RXD line to an input. The MISO line is also set to an
output, and this can be used as a reset or device select control line. The
HB line is used as an optional busy input. The MB line mirrors the RXC
status flag, and indicates that data has been received.
A ‘STATUS READ’ command can be used to check for completed data
transmission.
Data Write Example: -
F4H 5AH
F6H 55H
F5H
F6H AAH
F8H 16H “This is a test string.” - Send character string when HB line is low.
F5H
Data Read Example: -
F5H
F7H
NORITAKE ITRON VFD MODULES
- Enable Asynchronous mode with busy test; set interface to 19200E.
- Send byte 55H to asynchronous port when HB line is low.
- Read current status. Wait until TXC is set.
- Send byte AAH to asynchronous port when HB line is low.
- Read current status. Repeat until RXC is set.
- Read received byte.
- Read current status. Wait until TXC is set.
PORT CONFIGURE
The MISO port is set high with a ‘1’ and low with a ‘0’. Busy detection is
enabled by setting HNDSHK to a ‘1’. The parity is set with the PARITY1/0
bits, 00=none, 10=even & 11=odd. The baud rate is set with the
BAUD1/0 bits, 00=4800, 01=9600, 10=19200 & 11=38400.
SERIAL SEND
Data is transmitted to the asynchronous 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
asynchronous 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 that data is
pending for transmission, TXC transmission was completed, and RXC
shows data has been received. RX ERR indicates a received parity,
overrun or framing error. HB IN shows the current state of the ‘HB’ line.
The TXC bit 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.
D7
D7
0
-
D6
D6
1
-
MISO OUT
GU140x16J-7806A
D5
D5
-
HNDSHK
HB IN
D4
D4
GU140x16J-7806A
F4H + SETUP
F6H + DATA
F8H + SIZE + DATA
F5H
F7H
TX PEND
PARITY1
D3
D3
PARITY0
TXC
D2
D2
BAUD1
RXC
D1
D1
RX ERR
BAUD0
D0
D0