VK202-25-E Matrix Orbital, VK202-25-E Datasheet - Page 40

• Manufacturer Part Number: VK202-25-E
• Description: VFD ALPHA/NUM DISPLAY 20X2
• Manufacturer: Matrix Orbital
• Series: VK202-25r

Specifications of VK202-25-E

• Outline L X W X H: 116.00mm x 37.00mm x 29.48mm
• Viewing Area: 89.75mm L x 11.50mm W
• Display Format: 20 x 2
• Display Type: Character
• Format: 5 x 7 Dots
• Voltage - Supply: *
• Character Size: 4.70mm H x 2.40mm W
• Interface: Serial
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Dots: -

9.4 Poll Key Press
9.5 Clear Key Buffer
Matrix Orbital
Syntax
Description
Remembered
Syntax
Description
Remembered
Syntax
In this mode, up to 10 key presses are buffered until the unit is polled by
the host system, via the poll keypad command 254 38. Issuing this
command places the unit in polled mode.
NOTE This command is not available in I2C.
Yes
This command returns any buffered key presses via the RS-232
interface. The host system must be set up to receive key codes. When
the display receives this command, it will immediately return any
buffered key presses which may have not been read already. If there is
more than one key press buffered, then the high order bit (MSB) of the
returned key code will be set (1). If this is the only buffered key press,
then the MSB will be cleared (0). If there are no buffered key presses,
then the returned code will be 0x00. Please note that to make use of this
command, the “Auto Transmit Key Presses” mode should be off.
NOTE This command is not available in I2C. To read keys in I2C mode, one just needs
to address the module and read a byte. No preceding commands are necessary. If there are
no keys pressed the read will result in a 0x00.
No
Hexadecimal
Decimal
ASCII
Hexadecimal
Decimal
ASCII
Hexadecimal
Decimal
ASCII
0xFE 0x4F
254 79
254 “O”
0xFE 0x26
254 38
254 “&”
0xFE 0x45
254 69
254 “E”
VK202-25
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