ATJ2073 ETC, ATJ2073 Datasheet - Page 29

• Manufacturer Part Number: ATJ2073
• Description: The Atj2073 is a Single-chip Highly-intergrated Digital Music System Solution for Devices such as Dedicated Audio Players, Pdas, and cell Phones
• Manufacturer: ETC

6.3 4*13 LCD Driver
Page 29 of 45
ATJ2073 builds in 1/3 biased 1/4 duty LCD driver. It outputs COM and SEG signals to LCD glass directly.
Bias voltage pin V1 and V2 need connect by-pass capacitor to ground. V0=GND, V3=VCC.
KeyOut0
KeyOut1
KeyOut2
KeyOut3
KeyOut4
KeyOut5
KeyOut6
KeyOut7
Example:
Reg$C0 Readback is $FF,$AF,$F7,$FF,$FF,$FE,$FF,$FF,$FF,$FF,$FF,$FE,
indicate following 5 keys have pressed : [KeyOut ,KeyIn]
[1,0], [1,2], [1,7], [3,4], [7,4]
ATJ2073
b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3
b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7
b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3
b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7
b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3
b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7
b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3
b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7
2nd Reg
5th Reg
8th Reg
11th Reg
1st Reg
4th Reg
7th Reg
10th Reg
12th Reg
3rd Reg
6th Reg
9th Reg
Actions Semiconductor Co.,LTD
2nd Reg
5th Reg
8th Reg
11th Reg
Data Sheet