Matrix LED Display Driver

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11

COMMAND ADDRESS

HEX

CODE

REGISTER

D15

D14

D13

D12

D11

D10

D9

D8

—

No-Op

X

0

0

0

0

0

0

0

0x00

Intensity10

X

0

0

0

0

0

0

1

0x01

Intensity32

X

0

0

0

0

0

1

0

0x02

Scan Limit

X

0

0

0

0

0

1

1

0x03

Configuration

X

0

0

0

0

1

0

0

0x04

User-Defined Fonts

X

0

0

0

0

1

0

1

0x05

Factory Reserved. Do not write to this.

X

0

0

0

0

1

1

0

0x06

Display Test

X

0

0

0

0

1

1

1

0x07

Digit 0 Plane P0

X

0

1

0

0

0

0

0

0x20

Digit 1 Plane P0

X

0

1

0

0

0

0

1

0x21

Digit 2 Plane P0

X

0

1

0

0

0

1

0

0x22

Digit 3 Plane P0

X

0

1

0

0

0

1

1

0x23

Digit 0 Plane P1

X

1

0

0

0

0

0

0

0x40

Digit 1 Plane P1

X

1

0

0

0

0

0

1

0x41

Digit 2 Plane P1

X

1

0

0

0

0

1

0

0x42

Digit 3 Plane P1

X

1

0

0

0

0

1

1

0x43

Write Digit 0 Planes P0 and P1 with Same Data

(Reads as 0x00)

X1

10

00

00

0x60

Write Digit 1 Planes P0 and P1 with Same Data

(Reads as 0x00)

X1

10

00

01

0x61

Write Digit 2 Planes P0 and P1 with Same Data

(Reads as 0x00)

X1

10

00

10

0x62

Write Digit 3 Planes P0 and P1 with Same Data

(Reads as 0x00)

X1

10

00

11

0x63

Table 5. Register Address Map

COMMAND BYTE

ADDRESS RANGE

AUTOINCREMENT BEHAVIOR

x0000000 to x0000100

Command byte address autoincrements after byte read or written.

x0000101

Command byte address remains at x0000101 after byte read or written, but the font

address pointer autoincrements.

x0000110

Factory reserved; do not write to this register.

x000111 to x1111110

Command byte address autoincrements after byte read or written.

x1111111

Command byte address remains at x1111111 after byte read or written.

Table 4. Command Address Autoincrement Rules