SFH 7770

2011-09-16

15

Proximity measurement data (LED 2 , 8bit, logarithmic)

Proximity measurement data (LED 3 , 8bit, logarithmic)

Interrupt register / INT output.

In Bit6/5 the source which triggers the interrupt is noted. Data from the status register (0x8E) are used.

In latched mode (set by bit3) this remains unchanged until the Interrupt register has been read by the

MCU, afterewards it is set to 0 automatically. In unlatched mode it is updated after every measurement.

The output polarity (pin 5 of the SFH7770) can be changed by bit 2.

The interrupt can be triggered by the Ambient Light Sensor and / or by the Proximity Sensor; this can

be set by the Interrupt mode (bit 1/bit 0). When bit 1 and bit 0 is set to 0, the INT output is in the high Z

state (high impedance).

R-Register 0x90

Bit

7

6

5

4

3

2

1

0

data

default

00000000

R-Register 0x91

Bit

7

6

5

4

3

2

1

0

data

default

00000000

R/W-Register 0x92

Bit

7

6

5

4

3

2

1

0

not

used

Interrupt

trigger source

not

used

Output mode

Output

polarity

Interrupt mode

(triggered by..)

R/W

not

used

R only

not

used

R/W

R/W

R/W

default

X

00

X

1

0

00

00 ALS

0 latched

0 active L

00 Z state

01 PS (LED 1)

1 not latched

1 active H

01 only PS

10 PS (LED 2)

10 only ALS

11 PS (LED 3)

11 PS and ALS