ADP8860

Rev. 0 | Page 32 of 52

Backlight Fade (BLFR)—Register 0x08

Table 24. BLFR Backlight Fade Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

BL_FO

BL_FI

Table 25. Bit Descriptions for the BLFR Register

Bit

Name

Bit No.

Description

BL_FO

7:4

Backlight fade out rate. If the fade out is disabled (BL_FO = 0000), the backlight changes instantly (within 100 ms). If the

fade out rate is set, the backlight fades from its current value to the dim or the off value. The times listed for BL_FO are

for a full-scale fade out (30 mA to 0 mA). Fades between closer current values reduce the fade time. See the Automated

Fade In and Fade Out section for more information.

0000 = 0.1 sec (fade out disabled)1

0001 = 0.3 sec

0010 = 0.6 sec

0011 = 0.9 sec

0100 = 1.2 sec

0101 = 1.5 sec

0110 = 1.8 sec

0111 = 2.1 sec

1000 = 2.4 sec

1001 = 2.7 sec

1010 = 3.0 sec

1011 = 3.5 sec

1100 = 4.0 sec

1101 = 4.5 sec

1110 = 5.0 sec

1111 = 5.5 sec

BL_FI

3:0

Backlight fade in rate. If the fade in is disabled (BL_FI = 0000), the backlight changes instantly (within 100 ms). If the

fade in rate is set, the backlight fades from its current value to its maximum when the backlight is turned on. The times

listed for BL_FI are for a full-scale fade in (0 mA to 30 mA). Fades between closer current values reduce the fade time.

See the Automated Fade In and Fade Out section for more information.

0000 = 0.1 sec (fade in disabled)1

0001 = 0.3 sec

0010 = 0.6 sec

0011 = 0.9 sec

…

1111 = 5.5 sec