GU180X32D-K610A4 Datasheet, PDF (4/7 Pages) List of Unclassifed Manufacturers – Dot Graphic VFD Module

Dot Graphic VFD Module
GU180x32D-K610A4
RESET TIMING
>50ns
The module is reset when a low-level signal is applied to the /RES line. This will cause the
/RES
module to clear the display, initialise the communication settings and set all power-up
30ms
defaults. During this initialisation period, the user must delay any transmission to the module.
DATA
KEYBOARD CONTROL
I/O level change interrupt.
All 8 I/O lines can be configured to scan a key matrix with up to 16 keys. The 1BH + 4BH command will configure the I/O lines to key scan
mode. The I/O port status will indicate the row/column position of the pressed key. The ENABLE line acts as hardware scan enable input, and
should be tied to ground.
The following example enables the key-scanning mode and the automatic I/O send when
PA0
using asynchronous communications.
S1 S2 S3 S4
PA1
ENABLE KEY SCANNNG
AUTOMATIC I/O SEND
PA2
PA3
GU180x32D
-K610A4
PA4
PA5
PA6
PA7
ENABLE
S5 S6 S7 S8
S9 S10 S11 S12
S13 S14 S15 S16
1BH 4BH
1BH 49H 82H
On each key press, the I/O port status will be sent out of the asynchronous
communication port. e.g. pressing key switch 1, the module will send 03H to the host
system.
When using synchronous serial communication, the /IRQ line will indicate when a key
has been pressed, the host should then issue a ‘Read Port’ command to determine the
I/O port status.
I/O CONTROL
The module contains simple Input and Output functions for the 8 I/O lines (PA0-PA7). All inputs include an
optional pull-up resistor, 30K-120K in value. The outputs can source ~5mA and sink ~30mA.
The following example sets up the I/O lines to control the 2 LED’s and provide a pull-up resistor for the
switch.
ENABLE I/O MODE P0/1 = OUT, P7 = IN
1BH 44H 80H
SET I/O LINES ENABLE P7 PULL-UP, TURN ON LED1&2
1BH 4FH 80H
With asynchronous communications enabled, the status of PA0-PA7 can be transmitted when a change in
level is detected on any pin. This automatic response mode can be enabled by using the ‘UART SETUP’
command. When this mode is enabled, the VFD module can reliably check port changes every 15ms. With
auto send disabled (default) a manual read command is required to determine the port status.
VDD
LED1
LED2
GU180x32D-
K610A4
PA0
PA1
SW1
PA7
GND
READ PORT
1BH 52H
RESPONSE
SW1 CLOSED
00H
SW1 OPEN
80H
When using synchronous serial communications, the host can detect
a level change with the /IRQ line on CON1. This allows the host to
poll the port status only when needed.
/IRQ
< 15ms
PA0 - PA7
I/O level change interrupt.
> 1us
When I/O control is used, the Enable line can be used as an active low
read or write strobe. With the I/O read command, the enable line will
clock before the module reads the I/O port status. With the I/O write
command, the enable line will clock after the I/O lines have been set.
ENABLE
PA0 - PA7
I/O WRITE
~400ns
<250ns
I/O Write & Read.
NORITAKE ITRON VFD MODULES
I/O READ
~400ns
<250ns
GU180x32D-K610A4