Rainbow Electronics MAX6963 User Manual

Page 9

MAX6960–MAX6963

4-Wire Serially Interfaced

8 x 8 Matrix Graphic LED Drivers

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display panel to be driven easily and intuitively by multi-
ple MAX6960s using 8 x 8 cathode-row matrix digits. The
MAX6960s in a display-driver design not only share the
host 4-wire interface, but they also share a local 3-wire
interface that is not connected to the host. The local 3-
wire interface works with the user’s driver settings to con-
figure all the MAX6960s to appear to the host interface as
one contiguous memory-mapped driver.

The pixel level-intensity control uses frame modulation.
Pixels are enabled and disabled on a frame-by-frame
basis over a 12-frame super frame (Table 5). The effec-
tive pixel frame duty cycle within a super frame sets each
pixel’s effective intensity. The 12-frame period of a super
frame allows arithmetic and geometric intensity scales to
be mixed on the same driver. This allows the user to set
up an RGY display with a different color scale for red and

RED

DRIVER0

GREEN

RED

DRIVER1

RED

DRIVER2

RED

DRIVER3

RED

DRIVER4

RED

DRIVER5

RED

DRIVER6

RED

DRIVER7

RED

DRIVER8

RED

DRIVER9

RED

DRIVER10

RED

DRIVER11

RED

DRIVER12

RED

DRIVER13

RED

DRIVER14

RED

DRIVER15

RED

DRIVER16

RED

DRIVER17

RED

DRIVER18

RED

DRIVER19

RED

DRIVER20

RED

DRIVER21

RED

DRIVER22

RED

DRIVER23

Figure 2. RGY 1-Bit-per-Pixel 48-Pixel x 32-Pixel Display Example

COLUMN 1

COLUMN 2

COLUMN 3

COLUMN 4

COLUMN 5

COLUMN 6

COLUMN 7

COLUMN 8

ROW 1

ROW 2
ROW 3

ROW 4
ROW 5

ROW 6

ROW 7
ROW 8

MONOCOLOR

COLUMN 1 (RED)

ROW 1

ROW 2
ROW 3

ROW 4
ROW 5

ROW 6

ROW 7
ROW 8

RGY

COLUMN 9 (GREEN)

Figure 3. 8 x 8 Matrix Pin Assignment

FIRST DISPLAY PIXEL
MAPS TO FIRST PLANE

LAST DISPLAY PIXEL

MAPS TO LAST PLANE

MEMORY LOCATION

Figure 4. How Plane Memory Across Multiple
MAX6960–MAX6963 Maps to Display Pixels