Optical Sensor Product Data Sheet LTR-329ALS-01 Spec No.: DS Effective Date: 09/04/2014 LITE-ON DCC RELEASE BNS-OD-FC001/A4.

Transcription

1 Optical ensor Product Data heet LTR-329L-0 pec No.: D Effective Date: 09/04/204 Revision: B LITE-ON D RELEE BN-OD-F00/4

2 Optical ensor LTR-329L-0. Description The LTR-329L-0 is a low voltage I2 digital light sensor [L] in a low cost miniature chipled lead-free surface mount package. This sensor converts light intensity to a digital output signal capable of direct I 2 interface. It provides a linear response over a wide dynamic range from 0.0 lux to 64k lux and is well suited to applications under high ambient brightness. There are altogether six gain settings (X, 2X, 4X, 8X, 48X and 96X) available for user to configure. This MO design and factory-set one time trimming capability ensure minimal sensor-to-sensor variations for ease of manufacturability to the end customers. 2. Features I2 interface (Fast 400kbit/s) Ultra-small hipled package Built-in temperature compensation circuit Low active power consumption with standby mode upply voltage range from 2.4V to 3.6V capable of.7v logic voltage Operating temperature range from -30 to +70 RoH and Halogen free compliant Light ensor lose to human eye spectral response Immunity to IR / UV Light ource utomatically rejects 50 / 60 Hz lightings flicker 6 dynamic range from 0.0 lux to 64k lux 6-bit effective resolution 3. pplications To control display backlight in Mobile Devices: Mobile phone, PD omputing Devices: Notebook P, Desktop Monitor onsumer Devices: LD/PDP TV backlight systems, ameras, Personal Navigation Device, Digital Photo Frame Dashboard

3 4. Ordering Information Optical ensor LTR-329L-0 Part Number Packaging Type Package Quantity LTR-329L-0 Tape and Reel 4-pins chipled package Outline Dimensions Notes :. ll dimensions are in millimeters.

4 6. Functional Block Diagram Optical ensor LTR-329L-0 7. pplication ircuit

5 Optical ensor LTR-329L-0 Pin I/O Type ymbol Description VDD Power upply Voltage I/O Pins onfiguration Table 2 GND Ground 3 I/O D I 2 serial data. This pin is an open drain input / output. 4 I L I 2 serial clock. This pin is an open drain input. Recommended pplication ircuit omponents omponent Rp, Rp2, Rp3 [] Recommended Value k to 0 k, 2 uf

6 8. Ratings and pecifications Optical ensor LTR-329L-0 bsolute Maximum Ratings at Ta = 25 Parameter ymbol Rating Unit upply Voltage VDD 3.8 V Digital Voltage Range L, D, INT -0.5 to 3.8 V Digital Output urrent L, D, INT - to 20 m torage Temperature T stg -40 to 00 Note: Exceeding these ratings could cause damage to the sensor. ll voltages are with respect to ground. urrents are positive into, negative out of the specified terminal. Recommended Operating onditions Description ymbol Min. Typ. Max. Unit upply Voltage VDD V LED upply Voltage VLED V Interface Bus Power upply Voltage V IO V Operating Temperature T ope Electrical & Optical pecifications ll specifications are at VDD = 3.0V, T ope = 25, unless otherwise noted. Parameter Min. Typ. Max. Unit ondition ctive upply urrent 250 u ctive Mode, T ope = 25 tandby urrent 5 u tandby / leep Mode Initial tartup Time ms (Note ) Wakeup Time from tandby 0 ms (Note )

7 Light ensor Optical ensor LTR-329L-0 Parameter Min. Typ. Max. Unit ondition Full cale D ount count Full cale D ount Dark D ount 0 6 count h0, Lux = count h, Lux = 0 D ount (Gain=96) count count h0, Lux = 200 (White LED) h, Lux = 200 (White LED) Integration Time : 50ms Measurement Time : 00ms L Ratio Ratio Ratio = h/(h + h0), Lux = 200 (White LED) Typical Performance urve ll specifications are at VDD = 3.0V, T ope = 25, unless otherwise noted. Figure : Normalized pectral Response

8 Optical ensor LTR-329L-0 Figure 2 : Viewing angle Figure 3 : Vdd versus verage Idd

9 Optical ensor LTR-329L-0 Figure 4 : verage Idd versus temperature Figure 5 : Output count ratio versus temperature

10 Optical ensor LTR-329L-0 Lux Formula Refer to ppendix for the lux formula Notes:. tartup equence upply VDD to ensor (ensor in tandby Mode) Wait 00 ms (min) - initial startup time I2 ommand (Write) To enable sensor to ctive Mode Wait 0 ms (max) - wakeup time from standby ensor is ctive and starts measurement

11 Electrical haracteristics Optical ensor LTR-329L-0 ll specifications are at VBus =.8V, T ope = 25, unless otherwise noted. Parameter ymbol Min. Max. Unit L clock frequency Bus free time between a TOP and TRT condition Hold time (repeated) TRT condition. fter this period, the first clock pulse is generated LOW period of the L clock HIGH period of the L clock et-up time for a repeated TRT condition et-up time for TOP condition Rise time of both D and L signals Fall time of both D and L signals Data hold time Data setup time Pulse width of spikes which must be suppressed by the input filter f 400 khz L t.3 us BUF t ; 0.6 us HD T t.3 us LOW t 0.6 us HIGH t ; 0.6 us U U T t ; 0.6 us TO t ns r t ns f t ; us HD U DT t ; 00 ns DT t 0 50 ns P Definition of timing for I 2 bus

12 Optical ensor LTR-329L-0 9. Principles of Operation I 2 Protocols.I 2 Write Protocol (type ): 7 8 lave address W Register ddress P lave ID (Write) lave ID (Write) L D lave address W Register ddress P.I 2 Write Protocol (type 2): lave address W Register ddress Register ommand P lave ID (Write) lave ID (Write) L D lave address W Register ddress Register ommand P.I 2 Read Protocol: 7 8 lave address R Register ommand N lave ID (Read) P

13 lave ID (Read) Optical ensor LTR-329L-0 L D lave address R Register ommand N P.I 2 Read (ombined format) Protocol: 7 8 lave address W Register ddress r 7 8 lave address R Register ommand N P lave ID (Write) lave ID (Read) lave ID (Write) lave ID (Read) L D lave address W Register ddress r lave address R Register ommand N P cknowledge (0 for an K) N Non-cknowledge( for an NK) tart condition r Repeated tart condition P top condition W Write (0 for writing) R Read ( for read) lave-to-master Master-to-lave I 2 lave ddress The 7 bits slave address for this sensor is 0x29H. read/write bit should be appended to the slave address by the master device to properly communicate with the sensor.

14 Optical ensor LTR-329L-0 ommand Type I 2 lave ddress (0x29H) W/R Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit Bit0 value Write x52H Read x53H Register et ddr R / W Register Name Description Reset Value 0x80 R / W L_ONTR L operation mode control W reset 0x00 0x85 R / W L_ME_RTE L measurement rate in active mode 0x03 0x86 R PRT_ID Part Number ID and Revision ID 0x0 0x87 R MNUF_ID Manufacturer ID 0x05 0x88 R L_DT_H_0 L measurement H data, lower byte 0x00 0x89 R L_DT_H_ L measurement H data, upper byte 0x00 0x8 R L_DT_H0_0 L measurement H0 data, lower byte 0x00 0x8B R L_DT_H0_ L measurement H0 data, upper byte 0x00 0x8 R L_TTU L new data status 0x00 Notes: ) When reading L data registers, read sequence should always be from lower address to higher address (E.g. For L data, h data should be read first followed by h0 data. Read sequence should be 0x88, 0x89, 0x8, 0x8B. When 0x8B is read, all four L data registers will be populated with new set of data).

15 Optical ensor LTR-329L-0 L_ONTR Register (0x80) The L_ONTR register controls the L Gain setting, L operation modes and software (W) reset for the sensor. The L sensor can be set to either standby mode or active mode. t either of these modes, the I 2 circuitry is always active. The default mode after power up is standby mode. During standby mode, there is no L measurement performed but I 2 communication is allowed to enable read/write to all the registers 0x80 L_ONTR (default = 0x00) B7 B6 B5 B4 B3 B2 B B0 Reserved L Gain W Reset L Mode Field Bits Default Type Description Reserved 7: Gain X lux to 64k lux (default) 00 Gain 2X 0.5 lux to 32k lux 00 Gain 4X 0.25 lux to 6k lux L Gain 4:2 000 RW 0 Gain 8X 0.25 lux to 8k lux 00 Reserved 0 Reserved 0 Gain 48X 0.02 lux to.3k lux Gain 96X 0.0 lux to 600 lux 0 Initial start-up procedure is NOT started (default) W reset 0 RW Initial start-up procedure is started, bit has default value of 0 after start-up L mode 0 0 RW 0 tand-by mode (default) ctive mode

16 Optical ensor LTR-329L-0 L_ME_RTE Register (0x85) The L_ME_RTE register controls the integration time and timing of the periodic measurement of the L in active mode. L Measurement Repeat Rate is the interval between L_DT registers update. L Integration Time is the measurement time for each L cycle. L Integration Time must be set to be equal or smaller than the L Measurement Repeat Rate. If L Integration Time is set to be bigger than L Measurement Repeat Rate, it will be automatically reset to be equal to L Measurement Repeat Rate by the I internally. 0x85 L_ME_RTE (default = 0x03) B7 B6 B5 B4 B3 B2 B B0 Reserved L Integration Time L Measurement Repeat Rate Field Bits Default Type Description Reserved 7: ms (default) 00 50ms L integration time L measurement rate 5:3 000 RW 2:0 0 RW ms 0 400ms 00 50ms 0 250ms 0 300ms 350ms ms 00 00ms ms 0 500ms (default) ms ms

17 Optical ensor LTR-329L-0 PRT_ID Register (0x86) (Read Only) The PRT_ID register defines the part number and revision identification of the sensor. 0x86 PRT_ID (default = 0x92) B7 B6 B5 B4 B3 B2 B B0 Part Number ID Revision ID Field Bits Default Type Description Part Number ID 7:4 00 R Part ID 0x0H Revision ID 3: R Revision ID 0x00H MNUF_ID Register (0x87) (Read Only) The MNUF_ID register defines the manufacturer identification of the sensor. 0x87 MNUF_ID (default = 0x05) B7 B6 B5 B4 B3 B2 B B0 Manufacturer ID Field Bits Default Type Description Manufacturer ID 7: R Manufacturer ID (0x05H)

18 Optical ensor LTR-329L-0 L_DT_H Register (0x88 / 0x89) (Read Only) The L_DT registers should be read as a group, with the lower address read back first (i.e. read 0x88 first, then read 0x89). These two registers should also be read before reading channel-0 data (from registers 0x8, 0x8B). When the I 2 read operation starts, all four L data registers are locked until the I 2 read operation of register 0x8B is completed. This will ensure that the data in the registers is from the same measurement even if an additional integration cycle ends during the read operation. New measurement data is stored into temporary registers and the L_DT registers are updated as soon as there is no on-going I 2 read operation. The L D channel- data is expressed as a 6-bit data spread over two registers. The L_DT_H_0 and L_DT_H_ registers provide the lower and upper byte respectively. 0x88 L_DT_H_0 (default = 0x00) B7 B6 B5 B4 B3 B2 B B0 L Data h Low 0x89 L_DT_H_ (default = 0x00) B7 B6 B5 B4 B3 B2 B B0 L Data h High Field ddress Bits Default Type Description L Data h Low 0x88 7: R L D channel lower byte data L Data h High 0x89 7: R L D channel upper byte data

19 Optical ensor LTR-329L-0 L_DT_H0 Register (0x8 / 0x8B) (Read Only) These two registers should be read after reading channel- data (from registers 0x88, 0x89). Lower address register should be read first (i.e read 0x8 first, then read 0x8B). ee L_DT_H register information above. The L D channel-0 data is expressed as a 6-bit data spread over two registers. The L_DT_H0_0 and L_DT_H0_ registers provide the lower and upper byte respectively. 0x8 L_DT_H0_0 (default = 0x00) B7 B6 B5 B4 B3 B2 B B0 L Data h0 Low 0x8B L_DT_H0_ (default = 0x00) B7 B6 B5 B4 B3 B2 B B0 L Data h0 High Field ddress Bits Default Type Description L Data h0 Low 0x8 7: R L D channel 0 lower byte data L Data h0 High 0x8B 7: R L D channel 0 upper byte data L_ TTU Register (0x8) (Read Only) The L_TTU register stores the information about L data status. New data means data has not been read yet. When the measurement is completed and data is written to the data register, the data status bit will be set to logic. When the data register is read, the data status bit will be set to logic 0.

20 Optical ensor LTR-329L-0 0x8 L_P_TTU (default = 0x00) B7 B6 B5 B4 B3 B2 B B0 L Data Valid L Gain L Interrupt tatus L Data tatus Reserved Field Bits Default Type Description L Data Valid 7 0 R 0 L Data is Valid (default) L Data is Invalid L Data Gain Range 6:4 000 R 000 L measured data in Gain X (default) 00 L measured data in Gain 2X 00 L measured data in Gain 4X 0 L measured data in Gain 8X 00 Invalid 0 Invalid 0 L measured data in Gain 48X L measured data in Gain 96X Reserved 3 0 R 0 Don t care L data status 2 0 R 0 OLD data (data already read), (default) NEW data (first time data is being read) Reserved :0 00 R -- Don t care

21 0. Device Operation(using Interrupt) Below flow diagram illustrates the LTR-329L operation. Optical ensor LTR-329L-0

22 . Pseudo odes Examples Optical ensor LTR-329L-0 ontrol Registers // The ontrol Register defines the operating modes and gain settings of the L of LTR-329. // Default settings is 0x00 (in tandby mode). lave_ddr = 0x29 // Enable L Register_ddr = 0x80 ommand = 0x0 WriteByte(lave_ddr, Register_ddr, ommand) // lave address of LTR-329 device // L_ONTR register // For Gain X // For Gain X96, ommand = 0xD L Measurement Rate // The L_ME_RTE register controls the L integration time and measurement rate. // Default setting of the register is 0x03 (integration time 00ms, repeat rate 500ms) lave_ddr = 0x29 // lave address of LTR-329 device // et L Integration Time 200ms, Repeat Rate 200ms Register_ddr = 0x85 // L_ME_RTE register ommand = 0x2 // Int time = 200ms, Meas rate = 200ms // For Int time = 400ms, Meas rate = 500ms, ommand = 0xB WriteByte(lave_ddr, Register_ddr, ommand) L Data Registers (Read Only) // The L Data Registers contain the D output data for the respective channel. // These registers should be read as a group, with the lower address being read first. lave_ddr = 0x29 // Read back L_DT_H Register_ddr = 0x88 ReadByte(lave_ddr, Register_ddr, Data0) Register_ddr = 0x89 ReadByte(lave_ddr, Register_ddr, Data) // Read back L_DT_H0 Register_ddr = 0x8 ReadByte(lave_ddr, Register_ddr, Data2) Register_ddr = 0x8B ReadByte(lave_ddr, Register_ddr, Data3) L_H_D_Data = (Data << 8) Data0 L_H0_D_Data = (Data3 << 8) Data2 // lave address of LTR-329 device // L_DT_H low byte address // L_DT_H high byte address // L_DT_H0 low byte address // L_DT_H0 high byte address // ombining lower and upper bytes to give 6-bit h data // ombining lower and upper bytes to give 6-bit h0 data

23 L tatus Register (Read only) Optical ensor LTR-329L-0 // The L_TTU Register contains the information on L data availability status. // This register is read only. lave_ddr = 0x29 // Read back Register Register_ddr = 0x8 ReadByte(lave_ddr, Register_ddr, Data) // lave address of LTR-329 device // L_TTU register address NewData_tatus = Data & 0x04 // NewData_tatus = 4(decimal) L New Data // L_Data_Valid = 0x00 L New Data is valid (usable) // L_Data_Valid = 0x80 L New Data is invalid, discard and wait for new L data

24 2. Recommended Leadfree Reflow Profile Optical ensor LTR-329L-0 T - TEMPERTURE ( ) R R2 R3 MX 260 R4 60 sec to 90 sec bove 27 R P HET UP P2 P4 OLDER PTE DRY OOL DOWN P3 OLDER REFLOW t-time (EOND) Process Zone ymbol T Maximum T/ time or Duration Heat Up P, R 25 to 50 3 /s older Paste Dry P2, R2 50 to s to 80s older Reflow P3, R3 P3, R4 200 to to /s -6 /s ool Down P4, R5 200 to 25-6 /s Time maintained above liquidus point, 27 > 27 60s to 90s Peak Temperature Time within 5 of actual Peak Temperature > s Time 25 to Peak Temperature 25 to 260 8mins It is recommended to perform reflow soldering no more than twice.

25 3. Moisture Proof Packaging Optical ensor LTR-329L-0 ll LTR-329L-0 are shipped in moisture proof package. Once opened, moisture absorption begins. This part is compliant to JEDE J-TD-033 Level 3. Time from Unsealing to oldering fter removal from the moisture barrier bag, the parts should be stored at the recommended storage conditions and soldered within seven days. When the moisture barrier bag is opened and the parts are exposed to the recommended storage conditions for more than seven days, the parts must be baked before reflow to prevent damage to the parts. Recommended torage onditions torage Temperature Relative Humidity 0 to 30 Below 60% RH Baking onditions Package Temperature Time In Reels hours In Bulk 00 4 hours Baking should only be done once.

26 4. Recommended Land Pattern and Metal tencil perture Optical ensor LTR-329L-0 Recommended Land Pattern

27 Recommended Metal tencil perture Optical ensor LTR-329L-0 It is recommended that the metal stencil used for solder paste printing has a thickness (t) of 0.mm (0.004 inches / 4 mils) or 0.27mm (0.005 inches / 5 mils). The stencil aperture opening is recommended to be 0.72mm x 0.60mm which has the same dimension as the land pattern. This is to ensure adequate printed solder paste volume and yet no shorting. Note:. ll dimensions are in millimeters

28 Optical ensor LTR-329L-0 5. Package Dimension for Tape and Reel Notes:. ll dimensions are in millimeters (inches) 2. Empty component pockets sealed with top cover tape 3. 7 inch reel pieces per reel 4. In accordance with NI/EI specifications.