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TSL2521 数据表(PDF) 23 Page - OSRAM GmbH

部件名 TSL2521
功能描述  Highly Sensitive Ambient Light Sensor with Selective Flicker Detection and Fast Sampling for Brightness Control or Auxiliary to Camera
PDF  81 Pages
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制造商  OSRAM [OSRAM GmbH]
网页  http://www.osram.com
标志 OSRAM - OSRAM GmbH

TSL2521 数据表(HTML) 23 Page - OSRAM GmbH

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Datasheet, Public
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[v3-00] 2022-Dec-21
TSL2521 − Register O ver view
MEAS_MODE0 Register
Figure 20:
MEAS_MODE0
Note(s):
1. Return to the Register Map (0x81).
Addr: 0x81
MEAS_MODE0
Bit
Field
Reset
Type
Bit Description
7
STOP_AFTER_NTH_
ITERATION
0R/W
Stops a measurement after nth iterations by
setting FDEN and AEN to 0. PON will stay at 1. Per
default it stops after one measurement, which
can be used for manual calibration.
6
ENABLE_AGC_ASAT_
DOUBLE_STEP_DOWN
0R/W
Enables two gain steps down at once in case of an
analogue AGC saturation and at a gain step still
>0. This will allow a faster reach of 25% full-scale
range and a more prompt reaction if analogue
saturations occurs.
5
MEASUREMENT_
SEQUENCER_SINGLE_
SHOT_MODE
0R/W
Start one measurement cycle with sequencer
settings and stop it by asserting Sleep After
Interrupt (SAI).
4
MOD_FIFO_ALS_STATUS_
WRITE_ENABLE
0R/W
Enables writing of ALS status to the FIFO RAM in
case ALS data scaling is used as well as 16-bit ALS
data writing. It is needed to be able to correctly
interpret the ALS data.
3:0
ALS_SCALE
0x4
R/W
ALS_SCALE is used to avoid that redundant ALS
MSBs are transmitted and are reducing possible
resolution, since the ALS data register is only 16
bits wide (internally the result can be 26 bits wide
= 11-bit samples + 11-bit sampling time + 4-bit
residuals - ALS_MSB_POSITION). The ALS_SCALE
register defines the number of MSBs which must
be 0 so that the scaled representation is used in
the ALS data registers instead of the unscaled
representation.



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