AD6311

1/8- to 1/16 Duty VFD Controller/Driver

Anachip Corp.

www.anachip.com.tw

Rev. A5 Dec 29, 2003

7/11

Lower 4 bits

Higher 4 bits

are ignored.

3.0 LED Port

Data is written to the LED port by a write command, starting from the least significant bit of the port.

When a bit of this port is 0, the corresponding LED lights; when the bit is 1, the LED goes off . The data

of bits 6 through 8 is ignored.

--

- b4 b3 b2 b1 b0

MSB

LSB

Don't care

LED1

LED2

LED3

LED4

LED5

On power application, all the LEDs remain dark.

4.0 Key Matrix and Key-Input data Storage RAM

The key matrix is of 12×4 configuration, as shown below.

The data of each key is stored as illustrated below, and is read by a read command, starting from the least

KEY1

KEY1

b4--------b7

b0--------b3

Reading sequence