Matrix LED Display Driver

12

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REGISTER DATA

MODE

D7

D6

D5

D4

D3

D2

D1

D0

Slow blinking (segments are refreshed using plane P0 for 1s,

plane P1 for 1s, for OSC = 4MHz).

PX

R

T

E

0

X

S

Fast blinking (segments are refreshed using plane P0 for 0.5s,

plane P1 for 0.5s, for OSC = 4MHz).

PX

R

T

E

1

X

S

Table 9. Blink Rate Selection (B Data Bit D2) Format

REGISTER DATA

D7

D6

D5

D4

D3

D2

D1

D0

Configuration Register

P

X

R

T

E

B

X

S

Table 7. Configuration Register Format

REGISTER DATA

MODE

D7

D6

D5

D4

D3

D2

D1

D0

Shutdown Mode

P

X

R

T

E

B

X

0

Normal Operation

P

X

R

T

E

B

X

1

Table 8. Shutdown Control (S Data Bit D0) Format

REGISTER DATA

REGISTER

POWER-UP CONDITION

ADDRESS

CODE (HEX)

D7

D6

D5

D4

D3

D2

D1

D0

Intensity10

1/16 (min on)

0x01

0

0

000000

Intensity32

1/16 (min on)

0x02

0

0

000000

Scan Limit

Display 4 digits: 0 1 2 3

0x03

X

X

XXXXX

1

Configuration

Shutdown enabled,

blink speed is slow,

blink disabled

0x04

0

X

0000

X

0

User-Defined Font

Address Pointer

Address 0x80; pointing to

the first user-defined font

location

0x05

1

0

000000

Display Test

Normal operation

0x07

X

X

XXXXX

0

Digit 0 Plane P0

Blank digit (0x20)

0x20

0

0

100000

Digit 1 Plane P0

Blank digit (0x20)

0x21

0

0

100000

Digit 2 Plane P0

Blank digit (0x20)

0x22

0

0

100000

Digit 3 Plane P0

Blank digit (0x20)

0x23

0

0

100000

Digit 0 Plane P1

Blank digit (0x20)

0x40

0

0

100000

Digit 1 Plane P1

Blank digit (0x20)

0x41

0

0

100000

Digit 2 Plane P1

Blank digit (0x20)

0x42

0

0

100000

Digit 3 Plane P1

Blank digit (0x20)

0x43

0

0

100000

Table 6. Initial Power-Up Register Status