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2.0 GENERAL DESCRIPTION
2.1 This specification becomes effective after being approved by the purchaser.
2.2 When any conflict is found in the specification, appropriate action shall be taken upon
agreement of both parties.
2.3 The expected necessary service parts should be arranged by customer before the
completion of production.
3.0 FEATURES
3.1 Four lines 5 x 8 dot matrix display, DC-DC/AC converter and controller/driver circuitry.
3.2 One chip controller mounted on the module includes the character generator ROM(CG-ROM)
of 240 5 x 8 characters.
1.0 SCOPE
This specification applies to VFD module (Model NO: M0420SD-204SDAR1-3) .
3.3 The module can be configured for a Motorola M68-type parallel interface, an Intel I80-
type parallel interface, or a synchronous serial interface.
3.4 The luminance level of the VFD can be varied by setting two bits in the function set
instruction, which are "don't care" bits for the module.
3.5 The module has a dual-port RAM that allows data and instructions to be sent to them
continuously. Thus, the busy flag is always 0 and the host never has to read the busy flag
bit to determine if the module is busy.
3.6 High quality green vacuum fluorescent display provides an attractive and readable medium.
Other colors can be achieved by simple wavelength filters.
3.7 The module has up to 8 user definable characters. (CG-RAM function)
3.8 Newhaven Display reserves the right to change or modify this display design in order to
improve the design.
M0420SD-204SDAR1-3
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