AD6315Q ANACHIP [Anachip Corp], AD6315Q Datasheet - Page 7

• Manufacturer Part Number: AD6315Q
• Description: 1/4- to 1/12 Duty VFD Controller/Driver
• Manufacturer: ANACHIP [Anachip Corp]

(2) Key Matrix and Key-input Data Storage RAM
(3) LED Port
(4) Commands
Anachip Corp.
www.anachip.com.tw
1/4- to 1/12 Duty VFD Controller/Driver
The key matrix is made up of a 16 X 2 matrix, as shown below.
The data of each key is stored as follows, and is read with the read command starting from the least
significant bit.
Data is written to the LED port with the write command, starting from the least significant bit. “L” output
when the bit of this port is 0, and “H” output when the bit is 1. The data of bits after the 5
Note: On power application, all the LED ports are “L” output.
Commands set the display mode and status of the VFD driver.
The first 1 byte input to the AD6315 through the DIN pin after the STB pin has fallen is regarded as a
command. If STB is set high while commands/data are transmitted, serial communication is initialized,
and the commands/data being transmitted are invalid (however, the commands/data previously
transmitted remain valid).
KEY
Seg
Seg
Seg
Seg
b0
KEY
KEY
1
5
9
13
1
2
1
/ KS
/ KS
/ KS
/ KS
KEY
b1
1
5
9
13
2
KEY
Seg
Seg
Seg
Seg
b2
2
6
10
14
1
/ KS
/ KS
/ KS
/ KS
MSB
KEY
b3
2
6
Don't care
10
14
2
KEY
Seg
Seg
Seg
Seg
b4
3
7
11
15
1
/ KS
/ KS
7/16
/ KS
/ KS
b3
KEY
b5
3
7
11
15
b2
2
b1
KEY
Seg
Seg
Seg
Seg
b6
LSB
b0
4
8
12
16
1
/ KS
/ KS
/ KS
/ KS
LED
LED
LED
LED
KEY
b7
4
8
12
16
1
2
3
4
2
Reading
Sequence
AD6315
th
Rev. A5 Dec 29, 2003
bit are ignored.