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TSL2521 数据表(PDF) 24 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) 24 Page - OSRAM GmbH

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Datasheet, Public
Page 23
[v3-00] 2022-Dec-21
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TSL2521 − Register Overview
MEAS_MODE1 Register
Figure 21:
MEAS_MODE1
Note(s):
1. Return to the Register Map (0x82).
SAMPLE_TIME0 Register
Figure 22:
SAMPLE_TIME0
Note(s):
1. Return to the Register Map (0x83).
Addr: 0x82
MEAS_MODE1
Bit
Field
Reset
Type
Bit Description
7
MOD_FIFO_FD_END_
MARKER_WRITE_
ENABLE
0R/W
Enables writing of end marker to FIFO after each
complete flicker measurement.
6
MOD_FIFO_FD_
CHECKSUM_
WRITE_ENABLE
0R/W
Enables writing of flicker checksum to FIFO after
each complete flicker measurement.
5
MOD_FIFO_FD_
GAIN_WRITE_
ENABLE
0R/W
Enables writing of gain to FIFO after each complete
flicker measurement. This is required in case AGC is
enabled.
4:0
ALS_MSB_POSITION
0x0C
R/W
Internally the result can be 26 bits wide = 11-bit
samples + 11-bit sampling time + 4-bit residuals
and is stored in a 32-bit register. ALS_MSB_
POSITION defines the MSB in this 32-bit register
Addr: 0x83
SAMPLE_TIME0
Bit
Field
Reset
Type
Bit Description
7:0
SAMPLE_TIME[7:0]
0xB3
R/W
ALS measurement time step. Sets the time in steps
of 1.388889μs modulator clock. The modulator
clock can be divided with MOD_DIVIDER_SELECT
in register CFG7. Please observe that SAMPLE_
TIME needs to be set in register 0x83 and 0x84
(11-bit wide). It counts from 0-2047 (2048 counts).
SAMPLE_TIME =
(1/SamplingFreq/1.388889μs)-1
Default: 179+1 = 1/4000Hz / 1.388889μs
(180 counts as counted 0-179)
ALSIntegrationTimeStep = (SAMPLE_TIME+1) x
1.388889μs
Default: 250μs = (179+1) x 1.388889μs



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