下载
Maxim > Design Support > Technical Documents > Application Notes > Display Drivers > APP 141
Keywords: LED display drivers, LED drivers, SPI, serial, display drivers
APPLICATION NOTE 141
Data Multiplexer Adds Cursor To MAX7219 or MAX7221
LED 7 Segment Display Driver
Jun 04, 2002
Abstract: The MAX7219 or MAX7221 7-segment LED display driver can highlight any one digit of its 8 digit display
by adding a data multiplexer. This circuit intensifies the brightness of the selected digit to provide a cursor function
for data entry as well as readout.
A data multiplexer (IC2) enables the LED-display driver in Figure 1 to highlight any selected digit by intensifying its
brightness. This cursor function enables use of the display for data entry as well as readout.
Page 1 of 3
