TCS34713FN datasheet(6/39 Pages) OSRAM

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ams Datasheet

Page 5

[v1-01] 2018-Mar-27

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TCS3471 − Detailed Description

The TCS3471 light-to-digital device contains a 4

× 4 photodiode

array, integrating amplifiers, ADCs, accumulators, clocks,

buffers, comparators, a state machine, and an I²C interface. The

× 4 photodiode array is composed of red-filtered,

green-filtered, blue-filtered, and clear photodiodes — four of

each type. Four integrating ADCs simultaneously convert the

amplified photodiode currents to a digital value providing up

to 16 bits of resolution. Upon completion of the conversion

cycle, the conversion result is transferred to the data registers.

The transfers are double-buffered to ensure that the integrity

of the data is maintained. Communication to the device is

accomplished through a fast (up to 400 kHz), two-wire I²C serial

bus for easy connection to a microcontroller or embedded

controller.

The TCS3471 provides a separate pin for level-style interrupts.

When interrupts are enabled and a pre-set value is exceeded,

the interrupt pin is asserted and remains asserted until cleared

by the controlling firmware. The interrupt feature simplifies and

improves system efficiency by eliminating the need to poll a

sensor for a light intensity value. An interrupt is generated when

the value of an RGBC conversion exceeds either an upper or

lower threshold. In addition, a programmable interrupt

persistence feature allows the user to determine how many

consecutive exceeded thresholds are necessary to trigger an

interrupt.

Detailed Description

TCS34713FN 数据表(PDF) 6 Page - OSRAM GmbH