MAX6961 Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

Список матч

MAX6961

4-Wire Serially Interfaced 8 x 8 Matrix Graphic LED Drivers

Maxim Integrated 

4-Wire Serially Interfaced

8 x 8 Matrix Graphic LED Drivers

Table 4. Standard Driver Connection to Monocolor and RGY 8 x 8 Displays

Monocolor digit 0 (red*)

Monocolor digit 1 (green*)

RGY red/green

DRIVER PINS ROW1–ROW8 DRIVER PINS COL1–COL8 DRIVER PINS COL9–COL16

Digit 0 (red*) rows (cathodes) Digit 0 columns (anodes) C1 to —

R1 to R8

C8

Digit 1 (green*) rows

(cathodes) R1 to R8

—

Digit 1 columns (anodes) C1 to

C8

Red/green rows (cathodes) R1 Red columns (anodes) C1 to

to R8

C8

Green columns (anodes) C1 to

C8

*Digit 0 of a monocolor display is called red, and digit 1 is called green in the data sheet.

DRIVER0

DRIVER1

DRIVER2

DRIVER3

DRIVER4

DRIVER5

RED RED RED RED RED RED RED RED RED RED RED RED

DRIVER6

DRIVER7

DRIVER8

DRIVER9

DRIVER10 DRIVER11

RED RED RED RED RED RED RED RED RED RED RED RED

DRIVER12 DRIVER13 DRIVER14 DRIVER15 DRIVER16 DRIVER17

RED RED RED RED RED RED RED RED RED RED RED RED

DRIVER18 DRIVER19 DRIVER20 DRIVER21 DRIVER22 DRIVER23

RED RED RED RED RED RED RED RED RED RED RED RED

Figure 1. Monocolor 1-Bit-per-Pixel, 96-Pixel x 32-Pixel Display Example

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

8 _______________________________________________________________________________________

Share Link: