GU140X16G-7806A Noritake Company Inc, GU140X16G-7806A Datasheet - Page 4

• Manufacturer Part Number: GU140X16G-7806A
• Description: VFD MODULE, 140X16
• Manufacturer: Noritake Company Inc

Specifications of GU140X16G-7806A

• Resolution: 140 X 16
• Viewing Area (h X W): 11.45mm X 69.85mm
• Supply Current: 250mA
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: -40°C To +85°C
• Character Format: Dot Graphic
• Character Type: 5x7
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Asynchronous & synchronous serial interfaces are provided at TTL level. Synchronous is enabled with parallel, first received byte disables the
other. To enable Asynchronous Serial Mode connect pin 4 and 6 on CN3 (LINK1 and LINK2), Link J6 and enable i80 Mode on J2 and J4. When
using Asynchronous serial communications, the module is automatically initialized at power-up/reset with the cursor enabled.
The host busy line (HB) stops the module from sending data
to the host. The use of the HB and MB lines are optional, and
can be connected together if not required.
With synchronous communications enabled, data can be clocked into the VFD module on the rising edge of SCK, with the MSB sent first. The host
must provide adequate delays for the module to process the data, these busy times are specified in the software command section. Alternatively
the host can monitor the MB (Module Busy) line.
The /SS pin can be used as an enable pin if other devices are
connected to the serial line, and also allows byte synchronisation.
The use of the /SS line is recommended, but can be permanently
pulled low if not required.
An additional command has been included to distinguish between command and data writes when using serial communications. This command
(0FH) will temporarily set the RS line low for the subsequent written byte. The following example displays two text messages using the serial
communications and the ‘Set RS’ command: -
ASYNCHRONOUS SERIAL COMMUNICATION
SERIAL CONTROL
SYNCHRONOUS SERIAL COMMUNICATION
Dot Graphic VFD Module
HOST
SYSTEM
HOST
SYSTEM
NORITAKE ITRON VFD MODULES
GND
GND
R/W
RS
E
D4-D7
4-Bit Data/Status Read Timing Diagram.
VDD
VDD
>250ns
RXD
CLEAR DISPLAY
TXD
DTR
CTS
>30ns
0FH 01H
I/O
I/O
I/O
I/O
I/O
<250ns
RXD
TXD
HB
MB
SIN
SOUT
SCK
/SS
MB
Valid
0FH 80H
0FH C0H
SET CURSOR
UPPER NIBBLE
GU140x16G-7806A
GU140x16G-7806A
VDD GND
VDD GND
>50ns
‘NORITAKE ITRON’
‘VFD MODULES’
DISPLAY TEXT
100ns
RXD
Host to Module Write
Module to Host Write
TXD
MB
HB
MOSI
MISO
SCK
/SS
MB
TTL Synchronous serial communication.
START
>125ns
D0
>250ns
MSB
MSB
>250ns
>250ns
D1
<200us
>250ns
D2
START
>250ns
D3
GU140x16G-7806A
Valid
Displaying text using serial communications.
D0
D4
LOWER NIBBLE
D1
D5
D2
GU140x16G-7806A
D6
>50ns
D3
LSB
LSB
D7
<20us
D4
STOP
<20us
D5
>250ns
D6
tBUSY
tBUSY
D7
STOP