30058 Parallax Inc, 30058 Datasheet - Page 43

• Manufacturer Part Number: 30058
• Description: SER LCD 4X20 W/KEYBRD INTERFACE
• Manufacturer: Parallax Inc

Specifications of 30058

• Interface: Serial
• Display Type: LCD - Monochrome
• Display Mode: Reflective
• Viewing Area: 82.20mm L x 18.20mm W
• Backlight: LED - White
• Character Count X Line: 20 x 4
• Module Size (w X H X T): 98 mm x 60 mm x 27.5 mm
• Voltage Rating: 4.75 V to 5.25 V
• Operating Temperature Range: 0 C to + 50 C
• For Use With: 27963 - SOLUTIONS CUBED: MEMKEY
• Dot Size: -
• Dot Pitch: -
• Dot Pixels: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q2089249

9.5 Clear Key Buffer
9.6 Set Debounce Time
Matrix Orbital
Syntax
Description
Remembered
Syntax
Description
Remembered
Syntax
This command returns any buffered key presses via the RS-232 inter-
face. 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.
No
This command clears any unread key presses. In a menu application, if
the user presses a key which changes the menu context, any following
key presses may be inaccurate and can be cleared out of the buffer be-
tween menu changes to prevent jumping around the menu tree. It may
also be used, in effect, to reset the keypad in case the host application
resets for whatever reason.
No
Hexadecimal
Decimal
ASCII
Hexadecimal
Decimal
ASCII
Hexadecimal
Decimal
ASCII
0xFE 0x26
254 38
254 “&”
0xFE 0x45
254 69
254 “E”
0xFE 0x55 [time]
254 85 [time]
254 “U” [time]
LK204-25
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