tcs3771 ETC-unknow, tcs3771 Datasheet
tcs3771
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tcs3771 Summary of contents
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... RGBC and proximity measurements providing very low average power consumption. The TCS3771 is directly useful in lighting conditions containing minimal IR content such as LED RGB backlight control, reflected LED color sampler, or fluorescent light color temperature detector. With the addition blocking filter, the device is an excellent ambient light sensor, color temperature monitor, and general purpose color sensor ...
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... Communication to the device is accomplished through a fast (up to 400 kHz), two-wire I connection to a microcontroller or embedded controller. The TCS3771 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 or proximity value ...
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... TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 ORDERING NUMBER Interface TCS37711FN DD TCS37713FN Interface TCS37715FN DD TCS37717FN −0 3.8 V − −40°C to 85°C MIN NOM MAX 2 ...
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... Wait mode 2 Sleep mode — activity 3 mA sink current 6 mA sink current TCS37711 & TCS37715 TCS37713 & TCS37717 TCS37711 & TCS37715 TCS37713 & TCS37717 = 255C, GAIN = 16, ATIME = 0xF6 (unless otherwise noted) (see A Green Channel Blue Channel TYP MAX MIN TYP ...
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... P e PPULSE = 2 (See note 1) λ = 45.3 μW/ 850 nm PTIME = 0xFB PPULSE = 2 (See note 1) = 255C, Gain = 16, WEN = 1 (unless otherwise noted) A TEST CONDITIONS WTIME = 0xFF r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 MIN TYP MAX 3 2.27 2.4 2.56 1 256 0 1023 counts 0 255 ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 AC Electrical Characteristics, V † PARAMETER 2 f Clock frequency (I C only) (SCL) t Bus free time between start and stop condition (BUF) Hold time after (repeated) start condition. After t (HDSTA) this period, the first clock is generated. ...
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... A 100 Blue 900 1100 DD 1.0 0.8 255C 0.6 0.4 0.2 0 3.1 3.2 3.3 −90 r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 TYPICAL LDR CURRENT vs. VOLTAGE 100 12.5 mA 0.5 1 1.5 2 2.5 LDR Voltage − V Figure 3 NORMALIZED RESPONSIVITY vs. ANGULAR DISPLACEMENT -Q +Q −60 − − ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 10,000 1000 100 400 Copyright E 2011, TAOS Inc. 8 TYPICAL CHARACTERISTICS RESPONSIVITY TEMPERATURE COEFFICIENT 600 700 800 900 500 λ − Wavelength − nm Figure 6 r www.taosinc.com 1000 The LUMENOLOGY r Company ...
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... System State Machine The TCS3771 provides control of RGBC, proximity detection, and power management functionality through an internal state machine (Figure 7). After a power-on-reset, the device is in the sleep mode. As soon as the PON bit is set, the device will move to the start state. It will then continue through the Prox, Wait, and RGBC states. ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 RGBC Operation The RGBC engine contains RGBC gain control (AGAIN) and four integrating analog-to-digital converters (ADC) for the RGBC photodiodes. The RGBC integration time (ATIME) impacts both the resolution and the sensitivity of the RGBC reading ...
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... Surface Reflectivity (SR) Background Energy (BGE) The TCS3771 has controls for the number of IR pulses (PPCOUNT), the integration time (PTIME), the LED drive current (PDRIVE) and the photodiode configuration (PDIODE). The photodiode configuration can be set to red diode (recommended), clear diode combination of both diodes. At the end of the integration cycle, the results are latched into the proximity data (PDATA) register ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 The proximity integration time (PTIME) is the period of time that the internal ADC converts the analog signal to a digital count recommend that this be set to a minimum of PTIME = 0xFF or 2.4 ms. ...
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... Upper Limit Prox Persistence Prox Data Lower Limit PILTH(r 09), PILTL(r 08) AIHTH(r 07), AIHTL(r 06) APERS(r 0x0C, b3:0) Upper Limit RGBC Persistence Clear Data Lower Limit AILTH(r 05), AILTL(r 04) Figure 13. Programmable Interrupt r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 Copyright E 2011, TAOS Inc ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 State Diagram Figure 14 shows a more detailed flow for the state machine. The device starts in the sleep mode. The PON bit is written to enable the device. A 2.4-ms delay will occur before entering the start state. If the PEN bit is set, the state machine will step through the proximity states of proximity accumulate and then proximity ADC conversion ...
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... R A Data Read Protocol Slave Address 8 Data 2 C Read Protocol — Combined Format 2 Figure 15 Protocols r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 2 C protocol, please ... Data Byte ... Data ...
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... TAOS110A − MARCH 2011 Register Set The TCS3771 is controlled and monitored by data registers and a command register accessed through the serial interface. These registers provide for a variety of control functions and can be read to determine results of the ADC conversions. The register set is summarized in Table 1. ...
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... Special function — See description below READ VALUE Normal — no action Proximity interrupt clear RGBC interrupt clear Proximity and RGBC interrupt clear Reserved — Do not write r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 1 0 − − Copyright E 2011, TAOS Inc ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 Enable Register (0x00) The Enable register is used primarily to power the TCS3771 device on and off, and enable functions and interrupts as shown in Table Reserved ENABLE FIELD BITS Reserved 7:6 Reserved. Write as 0. ...
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... Proximity Time Control Register DESCRIPTION INTEG_CYCLES 1 Wait Time Register Table 6. DESCRIPTION WAIT TIME TIME (WLONG = 256 r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 TIME MAX COUNT 2.4 ms 1024 24 ms 10240 101 ms 43008 154 ms 65535 614 ms 65535 ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 RGBC Interrupt Threshold Registers (0x04 − 0x07) The RGBC interrupt threshold registers provides the values to be used as the high and low trigger points for the comparison function for interrupt generation. If the value generated by the clear channel crosses below the lower threshold specified, or above the higher threshold, an interrupt is asserted on the interrupt pin ...
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... TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 1 0 Address APERS 0x0C Copyright E 2011, TAOS Inc. ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 Configuration Register (0x0D) The configuration register sets the wait long time CONFIG FIELD BITS Reserved 7:2 Reserved. Write as 0. Wait Long. When asserted, the wait cycles are increased by a factor 12 ...
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... Table 13. ID Register DESCRIPTION r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 1 0 Address AGAIN 0x0F 1 0 Address 0x12 0x18 = TCS37711 &TCS37715 0x19 = TCS37713 & TCS37717 Copyright E 2011, TAOS Inc ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 Status Register (0x13) The Status Register provides the internal status of the device. This register is read only STATUS Reserved FIELD BIT Reserved 7:6 Reserved. PINT 5 Proximity Interrupt. AINT 4 RGBC clear channel Interrupt. ...
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... APPLICATION INFORMATION: HARDWARE LED Driver Pin with Proximity Detection In a proximity sensing system, the IR LED can be pulsed by the TCS3771 with more than 100 mA of rapidly switching current, therefore, a few design considerations must be kept in mind to get the best performance. The key goal is to reduce the power supply noise coupled back into the device during the LED pulses. ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 APPLICATION INFORMATION: HARDWARE PCB Pad Layout Suggested PCB pad layout guidelines for the Dual Flat No-Lead (FN) surface mount package are shown in Figure 18. Note: Pads can be extended further if hand soldering is needed. ...
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... GND 3 Photodiode Active Area 295 Nominal 125 Nominal Solder Contacts Photodiode Array Area (Note B) 750 + 100 r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 Dual Flat No-Lead PIN OUT TOP VIEW 6 SDA 5 INT 4 LDR SIDE VIEW 203 + 8 650 ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 TOP VIEW 4.00 + 0.30 8.00 − 0.10 j 0.50 + 0.05 DETAIL A 55 Max 0.254 2.21 + 0. NOTES: A. All linear dimensions are in millimeters. Dimension tolerance is ± 0.10 mm unless otherwise noted. B. The dimensions on this drawing are for illustrative purposes only. Dimensions of an actual carrier may vary slightly. ...
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... T peak t soak Figure 21. Solder Reflow Profile Graph r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 TCS3771 2.5°C/sec minutes Max 60 sec Max 50 sec Max 10 sec 260°C Max −5°C/sec Not to scale — for reference only ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 Moisture Sensitivity Optical characteristics of the device can be adversely affected during the soldering process by the release and vaporization of moisture that has been previously absorbed into the package. To ensure the package contains the smallest amount of absorbed moisture possible, each device is dry-baked prior to being packed for shipping ...
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... UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER’S RISK. LUMENOLOGY, TAOS, the TAOS logo, and Texas Advanced Optoelectronic Solutions are registered trademarks of Texas Advanced Optoelectronic Solutions Incorporated. The LUMENOLOGY r Company COLOR LIGHT-TO-DIGITAL CONVERTER NOTICE r www.taosinc.com TCS3771 with PROXIMITY SENSING TAOS110A − MARCH 2011 Copyright E 2011, TAOS Inc ...
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... TCS3771 COLOR LIGHT-TO-DIGITAL CONVERTER with PROXIMITY SENSING TAOS110A − MARCH 2011 Copyright E 2011, TAOS Inc www.taosinc.com The LUMENOLOGY r Company r ...