RPR-0521RS [ROHM]

RPR-0521RS是将光学式接近传感器和红外LED（IrLED）、数字照度传感器整合在1chip中的模块。接近传感器 (PS)通过对IrLED发射光线的接近物产生的反射光，检测出人及物体的接近。另外，照度传感器(ALS)可测量从昏暗光线到直射日光的广泛照度。根据照度数据调整LCD显示器及按键的亮度，从而提高组件的节电性能和画面的可视性。;


型号：	RPR-0521RS
厂家：	ROHM
描述：	RPR-0521RS是将光学式接近传感器和红外LED（IrLED）、数字照度传感器整合在1chip中的模块。接近传感器 (PS)通过对IrLED发射光线的接近物产生的反射光，检测出人及物体的接近。另外，照度传感器(ALS)可测量从昏暗光线到直射日光的广泛照度。根据照度数据调整LCD显示器及按键的亮度，从而提高组件的节电性能和画面的可视性。 CD 传感器接近传感器显示器
文件：	总25页 (文件大小：926K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Optical Proximity Sensor and

Ambient Light Sensor with IrLED

RPR-0521RS

Datasheet

● General Description

RPR-0521RS is a module which integrates optical proximity, digital ambient light sensor IC, and infrared LED

(IrLED). Proximity sensor (PS) part detects the human or object approaching by the reflection of IrLED light.

Ambient light sensor (ALS) part detects the wide range of illumination; from the dark environment to the direct

sun light. The illuminant intensity of LCD display and keypad can be adjusted by using RPR-0521RS. It enables

lowering current consumption and/or improving the visibility under the bright environment.

●Features

1) Compatible to I²C bus interface ( f/s mode support )

2) Compatible to 1.8V logic interface

3) Low Current consumption by power down function/mode

4) There are two ALS outputs; peaks of spectrum responses are in visible light (Data0) and in infrared light

(Data1) for calculating illuminance.

5) Correspond to very wide range of light intensity

6) Rejecting 50Hz/60Hz light noise (ALS function)

7) Detection range of proximity sensor is around 1 - 100mm (adjustable by I²C)

8) Built-in current configurable IrLED driver

● Application

Smart phone, Mobile phone, Digital Still Camera, Portable game, Camcoder, PDA, LCD display etc.

● Absolute maximum ratings ( Ta = 25℃ )

Parameter

VDD Supply Voltage

Symbol

Vddmax

Limits

4.5

Units

SDA, SCL Terminal Voltage

LEDA,LDR, INT Terminal Voltage

Operating Temperature

Storage Temperature

Vsdamax, Vsclmax

Vledamax, Vldrmax, Vintmax

4.5

-25～85

-30～85

℃

Topr

Tstg

Imax

℃

INT, SDA Sink Current

●Operating conditions

Parameter

VDD Supply Voltage

VLEDA Voltage

Symbol

Vdd

Vleda

Min.

2.5

2.8

－

Typ.

3.0

－

Max.

3.6

5.5

Units

Vint

INT Terminal Voltage

5.5

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Datasheet

RPR-0521RS

●Electrical characteristics

( VDD= 3.0V, Ta = 25℃, and all registers are default unless otherwise noted. )

Parameter

Symbol

Min.

Typ.

Max.

Units

Conditions

EV = 10 lx^*1

MODE_CONTROL(41h) =89h

Supply current for ALS

Icc1

300

Supply current for PS

Standby mode current

Icc2

Icc3

200

2.0

MODE_CONTROL(41h) =49h

MODE_CONTROL(41h)=00h,

No input light

0.1

1.0

EV = 10 lx^*1

Calculated Lx

－

MODE_CONTROL(41h)=89h

ALS_PS_CONTROL(42h)=02h

No input light

MODE_CONTROL(41h)=89h

ALS_PS_CONTROL(42h)=02h

Dark ( 0 lx ) Sensor out in

TYPE0

S0_0

－

count

No input light

MODE_CONTROL(41h)= 89h

ALS_PS_CONTROL(42h)=02h

Dark ( 0 lx ) Sensor out in

TYPE1

S0_1

PS50

－

PS sensor out ( d=50mm^*2)

112

count

MODE_CONTROL(41h)=49h

LED current =100mA

Ambient irradiance = 0uW/cm²

MODE_CONTROL(41h)=49h

LED current =100mA

PS sensor out

(No proximity object)

PS0

－

MODE_CONTROL(41h)=49h

MODE_CONTROL(41h)=69h

ILED pulse duration 1

ILED pulse duration 2

twILED 1

200

330

300

500

twILED 2 110

LDR terminal sink current at

LDR terminal voltage = 1.3V

ALS_PS_CONTROL

(42h) <1:0> = “00”

ILED

INT output 'L' Voltage

SCL SDA input 'H' Voltage

SCL SDA input 'L' Voltage

VINTL

VIH

0.4

－

Iint = 3mA

1.26

－

VIL

0.54

SCL SDA input 'H'/'L'Current

I²C SDA Output 'L' Voltage

IIHL

-10

－

VOL

0.4

Iol = 3mA

*1 White LED is used as optical source. “Lx” is calculated from ADC count valus.

Object

*2 Measuring Condition

(90% reflective white sheet)

d=50mm

Product

Object: 90% reflective white sheet (50×50mm Kodak Gray Card Plus)

Distance between the object and the product is 50mm. No glass or apertures is above the product.

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RPR-0521RS

●Transmitter Electrical characteristics ( Ta = 25℃, unless otherwise noted. )

Parameter

Symbol

Min.

Typ.

1.6

Max.

1.95

Units

Conditions

LED current =100mA

LED Forward Voltage

－

LED Peak Emission Wavelength

λp

－

940

－

● I²C bus timing characteristics ( VDD= 3.0V, Ta = 25℃, unless otherwise noted. )

Parameter

I²C SCL Clock Frequency

I²C START Condition Hold Time

Symbol

f_SCL

Min.

Typ.

Max. Units

Conditions

－

400

kHz

t_HD;STA

0.6

－

I²C 'L' Period of the SCL Clock

I²C 'H' Period of the SCL Clock

t_LOW

t_HIGH

1.3

0.6

－

I²C S START Condition Set up time

t_SU;STA

0.6

－

I²C Data Hold Time

I²C Data Setup Time

I²C STOP Condition Set up Time

t_HD;DAT

t_SU;DAT

t_SU;STO

－

100

0.6

I²C Bus Free Time

t_BUF

1.3

－

I²C Data Vaild Time

t_VD;DAT

t_VD;ACK

－

0.9

－

I²C Data Vaild Acknowledge Time

I²C bus F/S-mode timing diagram

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Datasheet

RPR-0521RS

● Package outlines

(φ1.1)

(1.13)

(1.22)

Detector

Emitter

(0.87)

3.94

tamp (For the control of our company)

tamp (Month, Day)

1PIN

1-VDD

2-SCL

3-GND

4-LEDA

5-LEDK

6-LDR

7-INT

8-SDA

1.025

0.425

5 U 8 1 0 4

0.425

1.025

1) Unit: mm

2) Tolerance shall be ±0.2mm unless otherwise noted.

Number

Symbol

Description

VDD

SCL

GND

LEDA

LEDK

LDR

Supply Voltage

I²C Clock, Input

Ground

LED Supply Voltage

LED Cathode

LED Driver

INT

PS or ALS Interrupt Pin, Open Drain

I²C Serial Data, Input/Output

SDA

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Datasheet

RPR-0521RS

● Block diagram and block explanation

 I²C Interface

I2C bus interface. f/s mode. 1.8V interface.

 POR

Power on reset function.

 OSC

Internal oscillator.

 Timing Controller

Internal management block for proximity sensor and ambient light sensor.

 PS Control Logic

This block controls proximity sensor ADC.

 LED Pulse Gen

LED current generator. LED current can be adjusted by ALS_PS_CONTROL (42h) register.

 IrLED Driver.

IrLED driver block.

 PD_Visible + Infrared, PD_Infrared

Photo diodes for ambient light sensor.

 16bit ADC

AD converter for ALS.

 ALS Control Logic

This block controls ambient light sensor ADC.

 PD_PS

Photo diode for proximity sensor.

 DC Light Rejection Amp

DC light is rejected in this block.

 Linear ADC

AD converter for proximity sensor.

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Datasheet

RPR-0521RS

● Terminal description

No.

Terminal Name

Equivalent Circuit

Function

VDD

SCL

Power supply terminal

I²C bus Interface SCL terminal

GND

LEDA

LEDK

GND terminal

LED supply voltage

LED Cathode, Please connect to LDR

PIN when using internal LED driver

circuit.

LDR

Nch open drain LED terminal. LED

current and emitting pulse width can be

defined by internal register.

INT

Nch open drain output.

Interrupt setting is defined by internal

SDA

C bus Interface SDA terminal

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RPR-0521RS

●Structure figure

①

③

②

④

⑤

⑥

⑦

⑧

NO.

①

②

③

④

⑤

⑥

⑦

Name

LSI

Material

Ir LED

GaAlAs

Au wire

Insulating bonding paste

Conductive bonding paste

Transparent mold resin

Light-resistant mold resin

Epoxy resin

Ag + Epoxy resin

Epoxy resin

Cu,Ni,Au(Electrode)

⑧

PCB

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Datasheet

RPR-0521RS

Unit:mm

● Taping standard

Note）1.Unspecified tolerance shall be ±0.2.

2.Dimensions and marking of reels are in accordance with

JEITA’s standard ET-7103A.

+0.1

φ1.5

±0.1

±0.05

1pin

±0.1

1.55

φ1.5±0.1

2.75±0.05

Pull direction

±1

15.4

Pull direction

Packaging quantity: 2,500 pcs/reel

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Datasheet

RPR-0521RS

● Packaging requirements

1. Packaging

（１）Quantity per reel is 2,500pcs

（２）Each reel are packed in aluminum bag.

The size of aluminum bag is 240(a)×240(b)mm.

（３）Aluminum bag is pressure sealed on all four directions.

ｂ

2. Label indication

The following information shall be described on a aluminum bag label; ROHM type number, packaging

quantity, and lot number

【Example】

TYPE NO.

QR code

Bar code

Packaging

quantity

FOR ROHM ONLY

2,500pcs

1416 00820S

Bar code

MADE IN CHINA

Country of origin

Inspection stamp

【Example of lot number marking】

Factory mark

１４１６

００８２０

Ｓ

Serial number of lot

Manufacture week

Manufacture year

3. Factory (Country of origin)

・ROHM ELECTRONICS DALIAN CO., LTD. (CHINA)

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Datasheet

RPR-0521RS

Attention points in handling

This product is developed as an optical proximity sensor and ambient light sensor with IrLED; suitable for

reflow soldering. Please take care of following points when using this device.

1. Storage

There will be the possibility that the moisture influences the reliability of this product during the reflow

soldering process. Hence, the product is packed in the anti-moisture bag. When using the product,

please keep following conditions.

①

Storage condition ・・・・Storage Temperature ： 5 ~ 30℃

Storage Humidity ： less than 70%RH

②

Process after opening the bag ・ Please storage the product at the temperature between 5 ～30℃

and the moisture less than 70% RH within 168 hours.

③

Baking (dry) process

・・・If the above conditions aren’t kept, please apply the

baking process. The baking process should be executed

under the reel condition at 60℃±5℃for 12～24 hours. During

the baking process, the reel and emboss tape should be

handled with care.

2. Designing of PCB

The figure below is the recommended solder pattern. This pattern may need to be adjusted to mounting

conditions and solder paste.

P0.97×3=2.91

0.72

0.25

3.63

3. Reflow soldering

Number of reflow process shall be less than 2 times. When the second reflow process is performed, the

interval between the first and the second reflow process shall be as short as possible to prevent absorption of

moisture into the resin of the product. Cooling process to the room temperature shall be required between the

first and the second reflow process.

The following temperature condition is recommended for the reflow soldering. We would like you to evaluate

your reflow condition because the condition is affected by the PCB size, the product heat-resistivity or the

mount density

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Datasheet

RPR-0521RS

4. Reflow temperature profile

Package surface temperature （℃）

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Datasheet

RPR-0521RS

● Command set

Address

40h

41h

42h

43h

44h

45h

46h

47h

48h

49h

4Ah

4Bh

4Ch

4Dh

4Eh

4Fh

50h

51h

52h

53h

54h

92h

TYPE

default

SYSTEM_CONTROL

MODE_CONTROL

ALS_PS_CONTROL

PS_CONTROL

System control

0Ah

00h

02h

01h

00h

FFh

0Fh

00h

FFh

00h

E0h

ALS, PS function setting

ALS Gain, PS LED Driver

PS Gain, PS interrupt persistence

PS data low byte

PS_DATA_LSBs

PS data high byte

PS_DATA_MSBs

ALS_DATA0_LSBs

ALS_DATA0_MSBs

ALS_DATA1_LSBs

ALS_DATA1_MSBs

INTERRUPT

ALS DATA0 low byte

ALS DATA0 high byte

ALS DATA1 low byte

ALS DATA1 high byte

Interrupt control

PS upper threshold low byte

PS upper threshold high byte

PS lower threshold low byte

PS lower threshold high byte

ALS DATA0 upper threshold low byte

ALS DATA0 upper threshold high byte

ALS DATA0 lower threshold low byte

ALS DATA0 lower threshold high byte

PS offset low byte

PS_TH_LSBs

PS_TH_MSBs

PS_TL_LSBs

PS_TL_MSBs

ALS_DATA0_TH_LSBs

ALS_DATA0_TH_MSBs

ALS_DATA0_TL_LSBs

ALS_DATA0_TL_MSBs

PS_OFFSET_LSBs

PS_OFFSET_MSBs

MANUFACT_ID

PS offset high byte

MANUFACT ID

● SYSTEM_CONTROL ( 40h )

Field

Description

Bit

TYPE

0 : initial reset is not started

1 : initial reset is started

SW reset

0 : INT pin status is not initialized

1 : INT pin become inactive ( high impedance )

001010

INT reset

Part ID

5 : 0

default value 0Ah

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Datasheet

RPR-0521RS

● MODE_CONTROL ( 41h )

Field

Bit

TYPE

Description

0 : ALS Standby

1 : ALS Enable

0 : PS Standby

1 : PS Enable

ALS_EN

PS_EN

0 : PS LED pulse width is typ 200us

1 : PS LED pulse width is typ 330us (PS sensor out is doubled)

PS_PULSE

PS Operating

mode

0 : normal mode

1 : twice measurement mode

Measurement time 3 : 0

Shown in table below

default value 00h

Value

0000

0001

0010

0011

0100

0101

0110

0111

ALS

standby

10ms

Value

1000

1001

1010

1011

1100

1101

1110

1111

ALS

400ms _*1

400ms _*2standby

400ms _*2

50ms _*3

50ms

100ms

standby

100ms

40ms

100ms

400ms

50ms

100ms

400ms

50ms

Forbidden

_*1Measurement time is 100ms, sleep time is 300ms.

_*2High sensitivity mode, measurement time is 400ms.

_*3Additional software process is necessary. Please refer to P.18

● ALS_PS_CONTROL ( 42h )

Field

Bit

TYPE

Description

Reserved

7 : 6

Write 00

Gain control of ALS DATA 0

00 : x1 Gain mode

01 : x2 Gain mode

10 : x64 Gain mode

11 : x128 Gain mode

Gain control of ALS DATA 1

00 : x1 Gain mode

01 : x2 Gain mode

10 : x64 Gain mode

11 : x128 Gain mode

00 : 25mA

ALS DATA0 GAIN

5 : 4

ALS DATA1 GAIN

LED CURRENT

3 : 2

1 : 0

01 : 50mA

10 : 100mA

11 : 200mA

default value 02h

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RPR-0521RS

● PS_CONTROL ( 43h )

Field

Bit

TYPE

Description

00: Ambient infrared level is low

01: Ambient infrared level is high

Ambient_Ir_Flag 7 : 6

11: Ambient infrared level is too high

00: PS GAIN ×1

01: PS GAIN ×2

10: PS GAIN ×4

PS_GAIN

5 : 4

11: Forbidden

PS interrupt persistence setting

0000:Interrupt becomes active at each measurement end

0001:Interrupt status is updated at each measurement end

PERSISTENCE 3 : 0

RW 0010:Interrupt status is updated if two consecutive threshold

judgments are the same

0011 or more: Interrupt status is updated if threshold judgments

are the same over consecutive set times

default value 01h

● PS_DATA_LSBs ( 44h )

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

PS_DATA_LSBs

default value 00h

● PS_DATA_MSBs ( 45h )

TYPE

2¹¹

2¹⁰

2⁹

2⁸

PS_DATA_MSBs

default value 00h

●ALS_DATA 0_LSBs( 46h )

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

ALS_DATA0_LSBs

default value 00h

●ALS_DATA 0_MSBs( 47h )

TYPE

2¹⁵

2¹⁴

2¹³

2¹²

2¹¹

2¹⁰

2⁹

2⁸

ALS_DATA0_MSBs

default value 00h

●ALS_DATA 1_LSBs( 48h )

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

ALS_DATA1_ LSBs

default value 00h

●ALS_DATA 1_MSBs( 49h )

TYPE

2¹⁵

2¹⁴

2¹³

2¹²

2¹¹

2¹⁰

2⁹

2⁸

ALS_DATA1_MSBs

default value 00h

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RPR-0521RS

● INTERRUPT ( 4Ah )

Field

Bit

TYPE

Description

0 : PS interrupt signal inactive

1 : PS interrupt signal active

PS INT STAUTS

0 : ALS interrupt signal inactive

1 : ALS interrupt signal active

00 : Only PS_TH_H is effective

01 : PS_TH_H and PS_TH_L are effective as hysteresis

10 : PS_TH_H and PS_TH_L are effective as outside detection

11 : Forbidden

ALS INT STATUS

INT MODE

5 : 4

0 : Interrupt output ‘L’ is stable if newer measurement result is

also interrupt active

1 : Interrupt output ‘L’ is de-assert and re-assert if newer

measurement result is also interrupt active

INT ASSERT

INT LATCH

INT TRIG

0 : INT pin is latched until INTERRUPT register is read or

RW initialized

1 : INT pin is updated after each measurement

00 : INT pin is inactive

01 : Triggered by only PS measurement

10 : Triggered by only ALS measurement

11 : Triggered by PS and ALS measurement

1 : 0

default value 00h

1. In case of PS/ALS outside detection mode, interrupt signal inactive means that measurement result is

within registered threshold level; interrupt signal active means measurement result is out of registered

threshold level.

2. In case of PS hysteresis mode, once interrupt signal becomes active, INT status is kept until mea

surement result

becomes less than PS_TH_L register value.

3. Persistence is for PS only.

4. INT Pin become inactive (high impedance) if INTERRUPT register is read, initialized, or SW reset

is started.

●PS_TH_LSBs ( 4Bh )

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

PS_TH_LSBs

default value FFh

● PS_TH_MSBs ( 4Ch )

TYPE

2¹¹

2¹⁰

2⁹

2⁸

PS_TH_MSBs

default value 0Fh

● PS_TL_LSBs ( 4Dh )

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

PS_TL_LSBs

default value 00h

● PS_TL_MSBs ( 4Eh )

TYPE

2¹¹

2¹⁰

2⁹

2⁸

PS_TL_MSBs

default value 00h

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RPR-0521RS

●ALS_DATA0_TH_LSBs ( 4Fh )

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

ALS_DATA0_TL_ LSBs

default value FFh

●ALS_DATA0_TH_MSBs ( 50h )

ALS_DATA0_TH_MSBs

TYPE

2¹⁵

2¹⁴

2¹³

2¹²

2¹¹

2¹⁰

2⁹

2⁸

default value FFh

● ALS_DATA0_TL_LSBs ( 51h )

ALS_DATA0_TH_LSBs

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

default value 00h

● ALS_DATA0_TL_MSBs ( 52h )

ALS_DATA0_TL_ MSBs

TYPE

2¹⁵

2¹⁴

2¹³

2¹²

2¹¹

2¹⁰

2⁹

2⁸

default value 00h

● PS _OFFSET_LSBs ( 53h )

PS_OFFSET_LSBs

TYPE

2⁷

2⁶

2⁵

2⁴

2³

2²

2¹

2⁰

default value 00h

● PS _OFFSET_MSBs ( 54h )

Field

Bit

TYPE

Description

Ignored

Resereved

7 : 2

Shown below

PS_OFFSET_MSBs

1 : 0

default value 00h

PS_OFFSET_MSBs

TYPE

2⁹

2⁸

default value 00h

When changed these registers, PS_DATA (44h,45h) becomes

([PS measured value])- ([PS offset value]) offset value])

● MANUFACT_ID ( 92h )

Field

MANUFACT_ID

Bit

7 : 0

TYPE

Description

11100000

default value E0h

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RPR-0521RS

● I²C bus communication

1) Slave address “0111000” (38h)

2) Main write format

1. Case of “Indicating register address”

Slave Address

Indicate register address

010XXXXX

ACK

ACK SP

0111000

2. Case of "writing data register after indicating register address"

Indicate register address

010XXXXX

Slave Address

0111000

ACK

Data specified at register address

field

Data specified at register

ACK

address

field + N

ACK SP

RPR-0521RS continues to write data with address increments until master issues stop condition.

Write cycle is 40h - 41h - 42h - 43h - 44h - 45h - 46h ……… 53h – 54h - 40h ………

Ex) If register address field is 42h, then RPR-0521RS writes data like below.

42h - 43h - 44h - 45h - 46h ……… 53h - 54h - 40h…….

3) Main read format

1. Case of “Reading data after indicating register address” (Master issues restart condition)

Slave Address

0111000

Indicate register address

010XXXXX

ACK

Slave Address

0111000

Data specified at register address

field

ACK

Data specified at register

address field + 1

Data specified at register

ACK

NACK SP

address field + N

2. Case of “Reading data from specified register address”

Slave Address

0111000

Data specified at register address

field

ACK

Data specified at register

address field + 1

Data specified at register

ACK

NACK SP

address field + N

RPR-0521RS continues to read data from specified address field until master issues stop condition.

Read cycle is 40h - 41h - 42h - 43h - 44h - 45h - 46h ……… 53h - 54h - 40h ………

Ex) If register address field is 53h, then RPR-0521RS reads data like below.

53h - 54h - 40h ………

from master to slave

from slave to master

RPR-0521RS operates as I2C bus slave device.

※

_※Please refer formality I2C bus specification of NXP semiconductors.

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RPR-0521RS

●Notice in case of using ALS 50ms measurement mode

At 50msec mode (MODE_CONTROL (41h) <3:0>:"1100"), full scale count of ALS_DATA0 (46h, 47h) and

ALS_DATA1 (48h, 49h) become half of other modes.

ALS_DATA0<15> or ALS_DATA1<15> is a flag indicating the data overflow.

Consequently, additional function as follows is necessary in software at 50msec mode.

if (DATA0<15>==1){DATA0<15:0>=7FFFh}

if (DATA1<15>==1){DATA1<15:0>=7FFFh}

*This function is necessary at 50msec mode only.

*This function must be executed before Lux calculation given

● PS twice measurement mode

RPR-0521RS has two PS operating modes that can be selected by MODE_CONTROL(41h).

At normal mode, PS measurement is done only once in each measurement period.

At twice measurement mode, PS measurement is done twice in each measurement period.

By using twice measurement mode, quicker response of interrupt is available than normal mode

when persistence function is active.

Measurement interval

Normal

ノー_Noマ_rmル_alモード

mode

Twice

^T2^wi回^ce測定モード

measurement

mode

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● Notice in case of changing register value

When master changes a value of ALS_PS_CONTROL(42h) (For example, ALS gain), it is necessary to stop the

ALS/PS measurement in progress and re-start the measurement from the beginning (“Interrupt & Re-start”

sequence). The way to “Interrupt & Re-start” is to write some data to MODE CONTROL(41h). By writing both

MODE_CONTROL(41h) and ALS_PS_CONTROL(42h) with address increments access, it is possible to change

the register setting and “Interrupt & Re-start” the measurement at the same time.

● Power on reset function

RPR-0521RS series have power on reset function. By operating this function, all of registers are reset when the

power is supplied.

Please note followings and design the application.

① Power on time : t1

t1 > 2ms

RPR-0521RS series become operational after 2ms since VDD voltage crosses 2.0V from being less

than 0.4V.

② Power off time :t2

t2 > 1ms

Before the power is supplied, VDD voltage should be less than 0.4V at least for 1ms.

VCC

* “active

“active” means that RPR-0521RS series are correctly operational.

INT terminal is high impedance when VDD is supplied.

When VDD voltage become less than 2.0V, the power should be supplied again in accordance with the

above sequence.

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● Interrupt function

Interrupt function compares ALS and PS measurement result to preset interrupt threshold level. Interrupt status

can be monitored by INT pin. Interrupt function is able to be controlled by INTTERRUPT register ( 4Ah ).

Interrupt persistence is defined at PERSIST register ( 43h ). Persistence function is for PS only. There are two

output modes about interrupt function ( latched mode and unlatched mode ).

INT pin is Nch open drain terminal, so this terminal should be pull-up to some kind of voltage source by an

external resistance. INT terminal is high impedance when VCC is supplied.

INT terminal keeps previous state when power down command is sent. So it is recommended to set INT terminal

to high impedance before sending power down command. VDD current (approximately 25uA at VDD=2.5V) is

consumed during INT terminal is active. INT terminal can be changed to high impedance by writing INT reset

command, reading INTERRUPT register ( 4Ah ), or resetting software.

ex1 ) In case of using PS ‘H’ threshold （INTERRUPT register 4Ah<5:4> : ”00”）

In case of unlatched mode, if the measurement value exceeds the PS interrupt threshold ‘H’ value, the interrupt

becomes active. And if the measurement value is below the threshold ‘H’ value, the interrupt becomes inactive.

In case of latched mode, once the interrupt becomes active, it keeps the status until INT reset command is sent

or interrupt register is read.

In case of persistence function is set to active, if the INT is inactive, it keeps inactive status until the measurement

value exceeds the threshold ‘H’ value continuously. If the interrupt is active, it keeps active status until INT reset

command is sent, interrupt register is read, or the measurement value is below threshold ‘H’ value continuously

( case of unlatched mode ).

INT pin reset command is sent or master reads INTERRUPT

Latched mode

Unlatched mode

Persistence = 2

Active

Inactive

PS interrupt threshold level

Sequential measurement result

time

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ex2 ) In case of using PS hysteresis mode （INTERRUPT register 4Ah<5:4> : ” 01”）

In case of unlatched mode, if the measurement value exceeds the PS interrupt threshold ‘H’ value, the interrupt

becomes active. And if the measurement value is below the threshold ‘L’ value, the interrupt becomes inactive.

In case of latched mode, once the interrupt becomes active, it keeps the status until INT reset command is sent

or interrupt register is read.

In case of persistence function is set to active, if the INT is inactive, it keeps inactive status until the measurement

value exceeds the threshold ‘H’ value continuously. If the interrupt is active, it keeps active status until INT reset

command is sent, interrupt register is read, or the measurement value is below threshold ‘L’ value continuously.

INT pin reset command is sent or master reads INTERRUPT

Latched mode

Unlatched mode

Persistence = 2

Active

Inactive

PS interrupt threshold ‘H’ level

PS interrupt threshold ‘L’ level

Sequential measurement result

time

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ex3 ) In case of using PS outside threshold mode （INTERRUPT register 4Ah<5:4> : ” 10”）

In case of unlatched mode, if the measurement value is within the range set by PS interrupt threshold ‘H’ and ‘L’

value, the interrupt becomes inactive. And if the measurement value is out of the range set by threshold ‘H’ and

‘L’ value, the interrupt becomes active.

In case of latched mode, once the interrupt becomes active, it keeps active status until INT reset command is

sent, or interrupt register is read.

INT pin reset command is sent or master reads INTERRUPT

Latched mode

Unlatched mode

Active

Inactive

PS interrupt threshold ‘H’ level

PS interrupt threshold ‘L’ level

Sequential measurement result

time

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ex4 ) Ambient light sensor interrupt function

In case of unlatched mode, if the measurement value (ALS_DATA0) is within the range set by ALS interrupt

threshold ‘H’ and ‘L’ value, the interrupt becomes inactive. And if the measurement value (ALS_DATA0) is out of

the range set by threshold ‘H’ and ‘L’ value, the interrupt becomes active.

In case of latched mode, once the interrupt becomes active, it keeps active status until INT reset command is

sent, or interrupt register is read.

INT pin reset command is sent or master reads INTERRUPT

Latched mode

Unlatched mode

Active

Inactive

ALS interrupt threshold ‘H’ level

ALS interrupt threshold ‘L’ level

Sequential measurement result

time

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● Cautions for using this product

1) Absolute Maximum Ratings

An excess in the absolute maximum ratings, such as supply voltage, temperature range of

operating conditions ( T_opr), etc., can break down devices, and make impossible to identify

breaking mode such as short circuit or open circuit. If any special mode exceeding the absolute

maximum ratings is assumed, consideration should be given to take physical safety measures

including the use of fuses.

2) GND voltage

It is necessary to keep the potential of the GND terminal at the minimum potential of all terminals

at any time.

3) Short circuit between terminals and erroneous mounting

In order to mount products on the set PCB, pay thorough attention to the direction and offset of the

products. Erroneous mounting can break down the products. Furthermore, if a short circuit occurs

due to foreign matters entering between terminals or between the terminal and the power supply or

the GND terminal, the products can break down.

4) Operation in strong electromagnetic field

Be noted that using products in the strong electromagnetic field can malfunction.

5) Inspection with set PCB

In order to mount or dismount the set PCB to/from the jig for the inspection process, be sure to turn

OFF the power supply. In addition, pay attention to protection against static electricity.

6) Dust or scratch

Dusts or scratch on the photo detector may affect the optical characteristics. Please handle it with

care.

7) Rush current

When power is supplied to the product, it is possible that the internal logic may be unstable and

rush current may flow instantaneously. Therefore, give special consideration to power coupling capacitance,

power supply, and circuit design.

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Notice

N o t e s

1) The information contained herein is subject to change without notice.

2) Before you use our Products, please contact our sales representative and verify the latest specifica-

tions :

3) Although ROHM is continuously working to improve product reliability and quality, semicon-

ductors can break down and malfunction due to various factors.

Therefore, in order to prevent personal injury or fire arising from failure, please take safety

measures such as complying with the derating characteristics, implementing redundant and

fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no

responsibility for any damages arising out of the use of our Poducts beyond the rating specified by

ROHM.

4) Examples of application circuits, circuit constants and any other information contained herein are

provided only to illustrate the standard usage and operations of the Products. The peripheral

conditions must be taken into account when designing circuits for mass production.

5) The technical information specified herein is intended only to show the typical functions of and

examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly,

any license to use or exercise intellectual property or other rights held by ROHM or any other

parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of

such technical information.

6) The Products are intended for use in general electronic equipment (i.e. AV/OA devices, communi-

cation, consumer systems, gaming/entertainment sets) as well as the applications indicated in

this document.

7) The Products specified in this document are not designed to be radiation tolerant.

8) For use of our Products in applications requiring a high degree of reliability (as exemplified

below), please contact and consult with a ROHM representative : transportation equipment (i.e.

cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety

equipment, medical systems, servers, solar cells, and power transmission systems.

9) Do not use our Products in applications requiring extremely high reliability, such as aerospace

equipment, nuclear power control systems, and submarine repeaters.

10) ROHM shall have no responsibility for any damages or injury arising from non-compliance with

the recommended usage conditions and specifications contained herein.

11) ROHM has used reasonable care to ensur the accuracy of the information contained in this

document. However, ROHM does not warrants that such information is error-free, and ROHM

shall have no responsibility for any damages arising from any inaccuracy or misprint of such

information.

12) Please use the Products in accordance with any applicable environmental laws and regulations,

such as the RoHS Directive. For more details, including RoHS compatibility, please contact a

ROHM sales office. ROHM shall have no responsibility for any damages or losses resulting

non-compliance with any applicable laws or regulations.

13) When providing our Products and technologies contained in this document to other countries,

you must abide by the procedures and provisions stipulated in all applicable export laws and

regulations, including without limitation the US Export Administration Regulations and the Foreign

Exchange and Foreign Trade Act.

14) This document, in part or in whole, may not be reprinted or reproduced without prior consent of

ROHM.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

http://www.rohm.com/contact/

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R1102

RPR-0521RS [ROHM]

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