Note that one group of these characters is repeated: 136-159 and 184-207 are identical.Ĭharacter Set (Character code= row+column) Screen Layouts Characters 136+ are a variety of symbols and foreign characters. Character codes 128-135 (0x80-0x87 hex) are custom characters that are used by the VFD-420's "Big-character" mode, and may be redefined for other purposes. VFD-420 and VFD-220 display the standard character set for character codes 32 to 127 (0x20-0x7F hex). See the hardware reference for further information. VFD-420 and VFD-220 accept asynchronous serial at 2400 or 9600bps, 8 data bits, no parity, 1 or more stop bit(s), often called "N81." They will accept RS-232 input or inverted TTL. Table of Contents Programming Serial Communication Character Set Screen Layout Control Codes Escape Instructions Other Pages Index, Revision History Hardware Reference VFD-220 Description VFD-420 Description Serial Communication For hookup, configuration and specifications, please see the hardware reference. This page describes the font, screen layout and instruction set of the VFD-420 and VFD-220 serial displays.
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