AAT1235
High Efficiency White LED Drivers
for Backlight and Keypad
Address 3: LED Group A ON/OFF
Control
Address 4: LED Groups A & B ON
Control
Data
A1
A2
A3
B2
B1
A1
A2
A3
1
2
3
4
5
6
7
8
Off
Off
Off
Off
On
On
On
On
Off
Off
On
On
Off
Off
On
On
Off
On
Off
On
Off
On
Off
On
On
On
On
On
On
Table 5: Address 4 for Turning Group A and B
All On.
Address 4 turns on all channels with the current
programmed by Addresses 0 and 1. No DATA
needs to be provided.
Table 4: Address 3 for Group A ON/OFF State.
AS2Cwire Serial Interface Timing
Address
THI
Data
TLAT
TLO
TLAT
EN/SET
1
2
17
18
1
2 . . .
n ≤ 16
Address
Data Reg 1
Data Reg 2
0
1
0
0
n
12
1235.2007.02.1.1