TSL27721 datasheet(43/58 Pages) OSRAM

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[v2-00] 2023-Mar-30

TSL2772 − Principles O f Operation

ADC Channel Data Registers (0x14 - 0x17)

ALS data is stored as two 16-bit values. To ensure the data is

read correctly, a two-byte read I²C transaction should be used

with auto increment protocol bits set in the command register.

With this operation, when the lower byte register is read, the

upper eight bits are stored in a shadow register, which is read

by a subsequent read to the upper byte. The upper register will

read the correct value even if additional ADC integration cycles

end between the reading of the lower and upper registers.

Figure 44:

ADC Channel Data Registers

Proximity Data Registers (0x18 - 0x19h)

Proximity data is stored as a 16-bit value. To ensure the data is

read correctly, a two-byte read I²C transaction should be

utilized with auto increment protocol bits set in the command

read, the upper eight bits are stored into a shadow register,

which is read by a subsequent read to the upper byte. The upper

ends between the reading of the lower and upper registers.

Figure 45:

Proximity Data Registers

Address

Bits

Description

C0DATA

0x14

7:0

ALS CH0 data low byte

C0DATAH

0x15

7:0

ALS CH0 data high byte

C1DATA

0x16

7:0

ALS CH1 data low byte

C1DATAH

0x17

7:0

ALS CH1 data high byte

Address

Bits

Description

PDATAL

0x18

7:0

Proximity data low byte

PDATAH

0x19

7:0

Proximity data high byte

TSL27721 Datasheet(PDF) 43 Page - OSRAM GmbH

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