Table 2 contains a list of the initial power-up states of important MAX6954 registers. Write 0x00 to register 0x07 to exit display test mode.Īfter verification of the connections between the MAX6954 and the 14-segment displays the device registers must be configured for operation with 14-segment displays. If a segment does not light in display test mode this indicates a connection problem that should be investigated. Enable display test mode by writing 0x01 to register 0x07. Display test mode overrides, but does not alter, all control and digit registers and turns all segments on. Figure 1 illustrates an eight digit, 14-segment application circuit for the MAX6954.ĭisplay test mode can be used to verify connections after connecting the MAX6954 to 14-segment displays. The letters in Table 1 correspond to the segment labels shown in Figure 2. Table 1 lists the connection scheme for 14-segment digits that is compatible with the MAX6954 multiplex scheme and the built in 104-character font map.
The technique is discussed in AppNote 1880. This differs from the standard LED multiplex connection, which uses separate driver pins for anodes and cathodes. The MAX6954 utilizes a multiplex technique that reduces driver pin count by using ports alternately as cathode and anode drivers. This application note guides the user through the process of connecting the MAX6954 to 14-segment displays and configuring the internal registers to control the displays using the included 104-character font map. “Quick-Start: Driving 7-Segment Displays with the MAX6954” and “Quick-Start: Driving 16-Segment Displays with the MAX6954” are similar application notes that discuss configuring the MAX6954 for 7-segment and 16-segment applications, respectively.Ī common application for the MAX6954 is driving up to eight 14-segment mono-color LEDs. Arduino Tutorial Online Courses Video Training.Arduino Nano Projects List in PDF offline downloadable.Android based arduino Projects List Download PDF.esp8266 arduino projects list in pdf offline downloadable.Arduino Proteus Projects List for Download.Arduino UNO Projects List in PDF offline downloadable.Arduino Mega 2560 projects list in PDF offline downloadable.Arduino Complete Projects List PDF Downloadable.Huge List of tutorials & Components based resources.
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