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MAX6962AMH Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX6962AMH Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 34 page 4-Wire Serially Interfaced 8 x 8 Matrix Graphic LED Drivers 8 _______________________________________________________________________________________ Software Control The hardware features are designed to simplify the software interface and eliminate software timing depen- dencies: • Two or four planes of display memory are stored, allowing images to be preloaded into the MAX6960– MAX6963 frame memory. • Animation timing is built in, sequencing through the two or four planes automatically. System software has to update the upcoming plane(s) with new data ahead of time, but do not be concerned about exact timing. The frame rate is adjustable to as fast as 63 frames a second for animations, or to as slow as one frame change every 63s for advertising sequencing. • Multiple MAX6960s interconnect and share display memory so that the software “sees” the display as memory-mapped planes of contiguous RAM. • Global commands that need to be received and acted on by every MAX6960 in a panel do just that, with one write. Hardware Design A MAX6960 normally drives an 8 x 16 LED matrix, com- prising 8 cathode rows and 16 anode columns, or 8 anode rows and 16 cathode columns with external drivers. The MAX6960 standard wiring connection to either two monocolor 8 x 8 digits, or to a single RGY 8 x 8 digit is shown in Table 4. Figure 3 shows the display pin naming. Figures 1 and 2 show example displays with the MAX6960 drivers connecting to monocolor and RGY pan- els. Figure 4 shows how the display memory maps to the physical pixels on the display panel, provided that the MAX6960 drivers are interconnected correctly in a raster- like manner from top left of the panel to bottom right. Detailed Description Overview The MAX6960 is an LED display driver capable of driving either two monocolor 8 x 8 cathode-row matrix digits, or a single RGY 8 x 8 cathode-row matrix digit. The architec- ture of the driver is designed to allow a large graphic DRIVER PINS ROW1–ROW8 DRIVER PINS COL1–COL8 DRIVER PINS COL9–COL16 Monocolor digit 0 (red*) Digit 0 (red*) rows (cathodes) R1 to R8 Digit 0 columns (anodes) C1 to C8 — Monocolor digit 1 (green*) Digit 1 (green*) rows (cathodes) R1 to R8 — Digit 1 columns (anodes) C1 to C8 RGY red/green Red/green rows (cathodes) R1 to R8 Red columns (anodes) C1 to C8 Green columns (anodes) C1 to C8 Table 4. Standard Driver Connection to Monocolor and RGY 8 x 8 Displays *Digit 0 of a monocolor display is called red, and digit 1 is called green in the data sheet. RED DRIVER0 RED RED DRIVER1 RED RED DRIVER2 RED RED DRIVER3 RED RED DRIVER4 RED RED DRIVER5 RED RED DRIVER6 RED RED DRIVER7 RED RED DRIVER8 RED RED DRIVER9 RED RED DRIVER10 RED RED DRIVER11 RED RED DRIVER12 RED RED DRIVER13 RED RED DRIVER14 RED RED DRIVER15 RED RED DRIVER16 RED RED DRIVER17 RED RED DRIVER18 RED RED DRIVER19 RED RED DRIVER20 RED RED DRIVER21 RED RED DRIVER22 RED RED DRIVER23 RED Figure 1. Monocolor 1-Bit-per-Pixel, 96-Pixel x 32-Pixel Display Example |
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