AAT2833/34
240mA Total Display Solution
for Portable Devices
With independent channel control enabled, the
functionality of Addresses 1, 2, and 3 will conform to
what is described in Tables 2b, 5, and 6. Also,
Addresses 0 and 15 are no longer applicable after
independent channel control has been enabled. As
indicated by the possible settings listed in the
tables, any combination of backlight channels can
be enabled and disabled. The original functionali-
ties (Sub Backlight Current BL5-BL6 and Low
Backlight Current) of Addresses 2 and 3 are no
longer available unless the internal state machine
has been reset to default mode operation (when
EN/SET is logic low for >500µs). The functionality
of Addresses 7-12 are unmodified by the enabling of
independent channel control.
Data
1
2
3
4
5
6
7
8
BL2
BL1
Off
Off
Off
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
On
Off
Off
Off
Off
On
On
On
On
Off
Off
Off
Off
On
On
On
On
9
10
11
12
13
14
15
16
Table 6: Address 3 with Independent
Channel Control Enabled, BL1-BL2
On/Off Control.
Address
Data
THI
TLO
TLAT
EN/SET
1
2
17
18
1
2 . . .
n ≤ 16
0
1
Address
DATA1
DATA0
n
1
1
2
Figure 2: AS Cwire Serial Interface Timing Details.
12
2833.2007.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
