ADP8863ACPZ-R7 datasheet(45/48 Pages) AD

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ADP8863

Rev. 0 | Page 45 of 48

Comparator Level 2 Threshold (L2_TRP)—Register 0x1D

Table 69. L2_TRP Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

L2_TRP

Table 70. Bit Descriptions for the L2_TRP Register

Bit Name

Bit No.

Description

L2_TRP

[7:0]

Comparator Level 2 threshold. If the comparator input is below L2_TRP, the comparator trips and the

backlight enters Level 2 (office) mode. The following lists the code settings for the photosensor current:

00000000 = 0 μA

00000001 = 4.3 μA

00000010 = 8.6 μA

00000011 = 12.9 μA

…

11111010 = 1080 μA

…

11111111 = 1106 μA

Although codes above 1111010 (250 decimal) are possible, they should not be used. Furthermore, the

maximum value of L2_TRP + L2_HYS must not exceed 11111010 (250).

Comparator Level 2 Hysteresis (L2_HYS)—Register 0x1E

Table 71. L2_HYS Bit Map

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

L2_HYS

Table 72. Bit Descriptions for the L2_HYS Register

Bit Name

Bit No.

Description

L2_HYS

[7:0]

Comparator Level 2 hysteresis. If the comparator input is above L2_TRP + L2_HYS, the comparator trips and

the backlight enters Level 1 (daylight) mode. The following lists the code settings for the photosensor

current hysteresis:

00000000 = 0 μA

00000001 = 4.3 μA

00000010 = 8.6 μA

00000011 = 12.9 μA

…

11111010 = 1080 μA

…

11111111 = 1106 μA

Although codes above 11111010 (250 decimal) are possible, they should not be used. Furthermore, the

maximum value of L2_TRP + L2_HYS must not exceed 11111010 (250).

ADP8863ACPZ-R7 数据表(PDF) 45 Page - Analog Devices

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