AD6312

1/4- to 1/11 Duty VFD Controller/Driver

Anachip Corp.

www.anachip.com.tw

Rev. A4 Dec 29, 2003

6/13

1.3 Address setting commands

These commands set an address of the display memory. If address 16H or higher is set, data is ignored,

until a valid address is set. On power application, the address is set to 00H.

1

1

-

b3 b2 b1 b0

MSB

LSB

b4

Address (00H-15H)

1.4 Display control commands

10

-

b3 b2 b1 b0

MSB

LSB

-

Irrelevant

Dimming quantity settings

000: Sets pulse width to 1/16.

001: Sets pulse width to 2/16.

010: Sets pulse width to 4/16.

011: Sets pulse width to 10/16.

100: Sets pulse width to 11/16.

101: Sets pulse width to 12/16.

110: Sets pulse width to 13/16.

111: Sets pulse width to 14/16.

Tums on/off display.

0: Display off (key scan continues)

1: Display on

On power application, the 1/16-pulse width is set, the display is turned off and key scanning is stopped.

2.0 Display RAM Address and Display Mode

The display RAM stores the data transmitted from an external device to the AD6312 through the serial

interface, and is assigned addresses as follows, in 8 bits unit:

b0

b3 b4

b7

Lower 4 bits

Higher 4 bits