AAT2860 Analogic Corporation, AAT2860 Datasheet - Page 16

• Manufacturer Part Number: AAT2860
• Manufacturer: Analogic Corporation

1. Denotes default (power-on-reset) value.
2. Denotes default value is "1" or ON.
3. Don't Care or Reserved.
16
ChargePump
REG2
REG3
REG5
FLOOR[1:0]
AAT2860-2
AAT2860-3
AAT2860-4
Number
Part
WM[4:0], WS[4:0]
Table 6: AAT2860-2/3/4 Flash Driver
00
01
10
11
1
Table 5: Main/Sub LED Current
FLOOR[1]
Control Register Allocation.
Fade In/Out Level Control.
00000
00001
00010
00011
00100
00101
00110
00111
01000
01001
01010
01011
01100
01101
01110
01111
D7
X
X
3
3
TM
“1” (Default)
Fade In/Out Current Level (mA)
6M+0S+1FL
6M+0S+1FL
5M+0S+2FL
1
MEQS Bit (REG2 Data Bit[6])
Table 3: AAT2860 BL1-BLX Backlight Control Register Allocation.
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
FLOOR[0]
MEQS
D6
X
3
Table 4: MAIN/SUB LED Current - WM/WS[4:0].
2
0.48
0.97
1.94
2.90
LED Current (mA)
4M+2S+1FL
5M+1S+1FL
4M+1S+2FL
MAIN_ON
SUB_ON
D5
“0”
X
3
w w w . a n a l o g i c t e c h . c o m
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
1
WM[4]
WS[4]
D4
X
3
For each one of the three options in Table 6, setting/pro-
gramming the bits in REG4 (see Table 7) sets the full-
scale flash current, the torch current levels, and flash
safety time duration. The most-significant 4-bit nibble
(REG1[D7:D4], or F_HI[3:0]) of the 8-bit data word sets
the full-scale flash LED current, the middle two bits
(REG4[D3:D2], or F_TIME[1:0]) set the flash safety dura-
tion, and the last two bits (REG4[D1:D0], or F_LO[1:0])
are used to set the torch current level.
WM[4:0], WS[4:0]
WM[3]
WS[3]
D3
X
3
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
WM[2]
WS[2]
D2
PRODUCT DATASHEET
X
3
AAT2860
NOFADE_M
LED Current (mA)
WM[1]
WS[1]
D1
2860.2008.05.1.0
2
0.5
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
NOFADE_S
WM[0]
WS[0]
D0
2