GP2AP030A00F
< Appendix >
Table of contents
1.
Abstract
1.1. Features．．．．．
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1.2. I2C bus interface．．．．．．．
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1.2.1. Write Format．．．．．．．
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．Attachment-4
1.2.2. Read Format．．．．．．．．
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．Attachment-4
1.2.3. Others and Notes．．．．．
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．Attachment-4
2.
Description of functions
2.1. Ambient light sensor (ALS) mode．．．．
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．．Attachment-5
2.2. Proximity sensor (PS) mode．．．
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．．Attachment-5
2.3. Software-shutdown mode．．．．
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2.4. Hardware-shutdown．．．．．．．．
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．Attachment-5
2.5. Auto-shutdown/Continuous operation．．．．．．
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．．Attachment-5
2.6. Operating mode selection．．．．
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．．Attachment-5
2.7. Number of measurement cycles (Persistence)．．．．．．
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．Attachment-5
2.8. Resolution/Measuring time．．．．
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．Attachment-5
2.9. Maximum measurable range．．．．．．
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．Attachment-5
2.10. Intermittent operating function．．．．．．．．
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．Attachment-5
2.11. LED drive peak current setting．．．．．．．．
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．．Attachment-5
2.12. INT terminal output type setting．．．．．．．
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．Attachment-5
2.13. LED modulation frequency(duty) setting．．．．．．．
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．Attachment-6
2.14. Software reset．．．．．．
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．Attachment-6
2.15. Interrupt function :ALS mode．．．．．
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．．Attachment-6
2.16. Interrupt function :PS mode．．．．．
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．Attachment-6
3.
Basic operation
3.1. Ambient light sensor mode (ALS)．．．．．．
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．Attachment-7
3.2. Proximity sensor mode (PS)．．．．
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．．Attachment-7
3.3. PS and ALS alternating mode (PS&ALS)．．．．．．
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．Attachment-7
3.4．Count value checking mode (debug mode for PS)．．
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．Attachment-8
4.
Register Mapping
4.1. Register Mapping．．．．．．
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．．Attachment-9
4.2. Precautions for Register setting．．．．．．．
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．Attachment-9
4.3. Register Functions．．．．．．
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．Attachment-9
4.4. Register settings for Basic operation．．．
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．Attachment-10
4.4.1. Software-shutdown
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．．．Attachment-10
4.4.2. Auto-shutdown/Continuous operation
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．．．Attachment-10
4.4.3. Operating mode selection operation
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．．．Attachment-10
4.4.4. Number of measurement cycles setting
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．Attachment-10
4.4.5. Interrupt type setting operation
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．Attachment-11
4.4.6. Intermittent operating function
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．Attachment-11
4.4.7. INT terminal setting operation
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．Attachment-12
4.4.8. Software reset uous operation
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Sheet No.: OP13013EN
Attachment-1
GP2AP030A00F
5.
6.
Register settings for PS
5.1. Output value of sensing result for detection/non-detection
5.2. Output value of PS interrupt result ction/non-detection
5.3. Resolution/Measuring duration setting for PS mode on
5.4. Maximum measurable range detection/non-detection
5.5. LED drive peak current setting detection/non-detection
5.6. LED modulation frequency(duty) setting on-detection
5.7. Proximity low threshold (Loff) detection/non-detection
5.8. Proximity high threshold (Lon) detection/non-detection
5.9. PS Detection result result for detection/non-detection
:PROX．．．
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:FLAG_P．．．．
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．Attachment-13
:RES_P [2:0]．
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．Attachment-13
:RANGE_P[2:0]．．．
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．Attachment-13
:IS [1:0]．．
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．Attachment-14
:FREQ．．．．．．
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．Attachment-14
:PL[15:0]．．
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．Attachment-14
:PH[15:0]．．．
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．Attachment-14
:D2[15:0]．
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．Attachment-14
Register settings for ALS
6.1. Output value of ALS interrupt result
6.2. Resolution/Measuring duration setting for ALS mode
6.3. Maximum measurable range for ALS mode
6.4. ALS interrupt low threshold on setting for ALS mode
6.5. ALS interrupt high threshold on setting for ALS mode
6.6. ALS Detection result easuring duration setting for ALS mode
:FLAG_A．．．．．．．
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．Attachment-15
:RES_A [2:0]．．
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．Attachment-15
:RANGE_A[2:0]．．．．．
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．Attachment-15
:TL[15:0]．
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．Attachment-15
:TH[15:0]．．
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．Attachment-15
:D0[15:0],D1[15:0]．．
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．Attachment-16
7.
INT terminal output mode
7.1. Detection result output mode for PS．
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7.2. Interrupt output mode．．．
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．Attachment-17
8.
Average consumption current in operation
8.1. Average consumption current in operation．．．．．．．
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8.2. Average consumption current at ambient light sensor (ALS) mode．．．．．．．
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．Attachment-18
8.3. Average consumption current at proximity sensor (PS) mode．．．．．
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．Attachment-18
9.
Countermeasure against external light noise in PS mode
9.1. Countermeasure against external light noise in PS mode．．．．．
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．Attachment-19
10. Recommended operating mode/Procedure of register setting
10.1. Shutdown mode．．．
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．Attachment-19
11. Sample programs
11.1. Sample program of function．．．．．．
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．．Attachment-20
11.2. Sample program for PS and ALS alternating mode．．．．
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11.3. Sample program for ALS mode．．．．．．
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12. Recommended Window Size (Reference)
12.1. Without light shield．．．．
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12.2. With light shield．．．．．．
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13. Data（Reference）
13.1. LED drive peak current．．．．．
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13.1.1. LED drive peak current vs. VLED (Vcc=VLED)．．．．．．．
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13.1.2．LED drive peak current vs. Vcc (VLED=3V)．．．．．．
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13.2. Spectral Responsivity．．．．．．
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．Attachment-28
13.3. Proximity sensor (PS) mode．．
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．Attachment-28
Sheet No.: OP13013EN
Attachment-2
GP2AP030A00F
1.
Abstract
GP2AP030A00F is ambient light sensor and proximity sensor with function ambient light sensing and proximity
sensing by setting register.
Proximity sensor (PS) mode: Judgment result of object existence can be referred by reading register value(16bit) via I 2C
bus interface.INT terminal can be changed either interrupt output or sensing result output (detection/non-detection
status) by setting register in PS mode.
Ambient light sensor (ALS) mode: Detection result of ambient light can be referred by reading register value(16bit) via
I2C bus interface. INT terminal can be changed interrupt output by setting register in PS mode.
This product is possible to operate both PS and ALS modes alternately.
Software-shutdown
mode
Ambient light
sensor(ALS) mode
Proximity
sensor(PS) mode
PS and ALS
alternating mode
Fig.1 Operating mode of GP2AP030A00F(PS and ALS sensor)
1.1. Features
● Design
This product is composed of following two chips in one package, which is IC with a built-in photodiode (PD)
(Clear (visible and infrared) photodiode and Infrared photodiode) for ambient light sensors and proximity
sensors, and infrared LED.
Achieving Small all-in-one package by Doubly-integrally-molded, transparent resin and light shield resin.
Spectral sensitivity(ALS) of the human eye without infrared light effects can be obtain by deducting Infrared
Photodiode from Clear photodiode.
● I2C bus interface
This product has 7bit slave address adherence to I2C bus interface and can change register value for each
function via I2C bus.
● INT terminal setting
INT terminal can be changed either interrupt output or sensing result output (detection/non-detection status) by
setting register in PS mode. ALS mode has only interrupt output setting.
● Power save mode
Software-shutdown /Hardware-shutdown
● Slave address
Enable to set 2 settings by ADDR terminal setting.
Sheet No.: OP13013EN
Attachment-3
GP2AP030A00F
1.2. I2C bus interface
This product has 7bit slave address adherence to I2C bus interface and can change register value for each function via
I2C bus. Besides, illuminance detection result and judgment result for detection/non-detection status can be read via I2C
bus.
Table 1 Terminals for I2C bus interface are as follows.
Pin Name
Description
SCL
I2C Clock
SDA
I2C Data bus
Basic data format are as follows.
S
T M
A S
R B
T
SDA
DATA
DATA
SLAVE ADDRESS
L
S
B
R A
/ C
W K
A M
C S
K B
A6 A5 A4 A3 A2 A1 A0
D7 D6 D5 D4
D3
D2
D1
D0
L
S
B
S
A
T
C
O
K
P
D7 D6 D5 D4 D3 D2 D1 D0
Fig.2 I2C Basic data format
DATA: Data which write into internal register/read from internal register.
SLAVE ADDRESS：Enable to set 2settings by ADDR terminal setting.
Table 2 I2C slave address
A5
A4
A3
1
1
1
0
0
0
ADDR terminal setting
A6
Lo LEVEL/OPEN
0
Hi LEVEL
1
R/W：Read:X=1, Write:X=0
A2
0
1
A1
0
0
A0
1
0
R/W
X
X
1.2.1. Write Format
Write value in register and enable to write the next address sequentially after writing data. Data writing will be end with
inputting stop-condition.
WordAddress:00H PROX, FLAG_P and FLAG_A register in 00H are read only.
WordAddress:0CH～11H D0[15:0], D1[15:0] and D2[15:0] registers from 0CH to 11H are read only.
Bit width
S
7
Slave Address
1
0 A
8
Word Address
A
8
Write Data1
A
8
Write Data2
A P
A: ACK,NA: NACK, S: ST ART , P: ST OP, X: don't care
: Master output
: Slave output
Fig.3 I2C write format
1.2.2. Read Format
Enable to read data in register. Following address can be read sequentially by inputting ACK after reading data.
Reading data will be stopped by inputting NACK.
Stop-condition after setting Word address can be deleted since it corresponds to repeat-start-condition. Reading read
data is done by not opening I2C bus interface.
Bit width.
7
S Slave Address
1
0 A
8
WordAddress
A (P) S
7
Slave Address
1
1 A
8
ReadData1
A
8
ReadData2
NA P
A: ACK, NA: NACK, S: ST ART , P: ST OP, X: don't care
: Master output
: Slave output
Fig.4 I2C read format
1.2.3. Others and Notes
This product doesn’t support Clock-stretch function and General-call-address function.
Sheet No.: OP13013EN
Attachment-4
GP2AP030A00F
2. Description of functions
2.1. Ambient light sensor (ALS) mode
Ambient light sensing results can be read at D0[15:0] and D1[15:0] register through I 2C bus interface.
The device outputs raw data of CLEAR photodiode sensitive to both visible and infrared spectrum and IR photodiode
sensitive to only infrared spectrum during ambient light sensing. It is necessary for device host (user side) to get
illuminance value with calculation of both CLEAR data at D0[15:0] and IR data at D1[15:0].
The device outputs interrupt signal to INT terminal in case that D0[15:0] exceed/fall below judgment threshold
level(TH[15:0]/TL[15:0]) set before sensing operation.
2.2.Proximity sensor (PS) mode
Proximity sensing results can be read at D2[15:0] register through I 2C bus interface.
The device outputs interrupt signal or detection/non-detection status on INT terminal in which case D2[15:0]
exceed/fall below judgment threshold level(PH[15:0]/PL[15:0]) set before sensing operation.
2.3. Software-shutdown mode
This product has shutdown function by which all circuits except I 2C go into shutdown mode and cease to draw supply
current. In this case, I2C communication is available. Current consumption (Idd-s) in shutdown mode is less than 5uA
when I2C bus interface is not used.
2.4. Hardware-shutdown
All the circuits can be completely stopped by stopping the power supply to the terminal Vcc, and the current
consumption can completely be cut.
2.5. Auto-shutdown/ Continuous operating function
Select continuous operation or auto-shutdown after one time operation by setting OP[2] register.
2.6. Operating mode selection
Operating modes are decided by setting OP[1:0] registers. Please select either mode, PS&ALS alternating mode, ALS
only mode or PS only mode. In addition to these modes, you can set counts value checking mode (debug mode for PS)
to confirm the reflection counts from the panel when your product is developed.
2.7. Number of measurement cycles(Persistence)
Select number of measurement cycles by setting PRST[1:0] register(1time, 4times, 8times, and 16times). Sensor
outputs interrupt signal or judgment result of detection/non-detection state by detecting threshold setting cycles
continuously. This function helps to decrease malfunction by noise such as flash of camera.
2.8. Resolution/Measuring time
ALS mode : Resolution and measuring time can be changed by setting RES_A[2:0] register.
PS mode : Resolution and measuring time can be changed by setting RES_P[2:0] register.
2.9. Maximum measurable range
ALS mode : Maximum measurable range can be changed by setting RANGE_A[2:0] register.
PS mode : Maximum measurable range can be changed by setting RANGE_P[2:0] register.
2.10. Intermittent operating function
This function is to reduce average consumption current by stopping part of circuit intermittently, and this is different
from software shutdown function. Intermittent operating duration can be changed by setting INTVAL[1:0] register.
Setting a longer intermittent operating duration makes LED average consumption current lower. However, update
period of the detection result becomes long. It will make response time of detecting longer.
2.11. LED drive peak current setting
Change drive peak current by setting IS[1:0] register. (LED drive peak current is 16.3mA, 32.5mA, 65mA and 130mA)
2.12. INT terminal output type setting
INT terminal can be changed either interrupt output or sensing result output (detection/non-detection status) by setting
PIN[1:0] register in PS mode. ALS mode has only interrupt output setting.
Sheet No.: OP13013EN
Attachment-5
GP2AP030A00F
2.13. LED modulation frequency (duty) setting
LED modulation frequency setting can be changed by setting FREQ register.
(Freq:327.5kHz, 81.8kHz at pulse width:1.5usec only)
Setting a lower modulation frequency makes LED average consumption current lower.
2.14. Software reset
All registers can be initialized by writing 1 to RST register.
RST register value also becomes 0 automatically which is initial value.
2.15. Interrupt function :ALS mode
Interrupt function becomes available by setting TH[15:0] register and TL[15:0] register in ALS mode.
Interrupt signal is outputted to INT terminal in case that detection result (D0[15:0] value) is less than TL[15:0] setting
value or more than TH[15:0] value.
2.16. Interrupt function :PS mode
Interrupt function becomes available by setting PH[15:0] register and PL[15:0] register in PS mode.
Interrupt signal or detecting/non-detecting judgment result is outputted to INT terminal in case that detection result
(D2[15:0] value) is less than PL[15:0] setting value or more than PH[15:0] value.
Enable to change desirable threshold in detecting distance and hysteresis by setting PH[15:0] and PL[15:0] registers.
However, detecting distance depends on LED output power as well. It can be changed by setting IS[1:0] register.
Sheet No.: OP13013EN
Attachment-6
GP2AP030A00F
3. Basic operation
3.1. Ambient light sensor (ALS) mode
There are 2 photodiodes, CLEAR(sensitive to visible and infrared spectrum) and IR photodiodes (sensitive to only
infrared spectrum) in this sensor. Illuminance value can be obtained by calculation from CLEAR and IR data.
The device continues to execute integration operation until set measuring time(100msec, recommended) passes, and
then outputs the results of CLEAR photodiode at D0[15:0] register and IR photodiode at D1[15:0] register.
Illuminance value can be obtained by some calculation using D0[15:0] and D1[15:0].
Ambient light sensor mode
ALS
ALS
ALS
ALS
D0[15:0]
clear
result
clear
result
clear
result
clear
result
D1[15:0]
infrared
result
infrared
result
infrared
result
infrared
result
Fig.5 Output results for ALS mode
3.2. Proximity sensor mode (PS)
In PS mode, the device can detect proximity objects by which integrates incident light in IR(infrared)
photodiode during the time without emission of LED (LED off) and the time with emission of LED (LED on) in
order to eliminate the influence of ambient light.
In PS mode, the way of detection is as follows;
[1]Obtain detection result1 at LED off which integrates incident light amount in PD for PS during a set period
(recommended value: 1.56ms). (Detection result1 is not outputted to register).
[2]Obtain detection result2 at LED on which integrates incident light amount in PD for PS during a set period
(recommended value: 1.56ms). (Detection result2 is not outputted to register).
[3]Then, obtain detection result3 by subtracting Detection result2 and result1. So this value has external light
cancellation. By using this value, proximity sensing judgment is done if reflective object is there or not.
Proximity sensor mode
PS
(LEDoff)
PS
(LEDon)
detection
result1
detection
result2
D2[15:0]
PS
(LEDoff)
PS
(LEDon)
detection result3
= detection result2- detection result1
detection result3
= detection result2- detection result1
Fig.6 Output results for PS mode
3.3. PS and ALS alternating mode (PS&ALS)
This product is possible to operate both PS and ALS modes alternately.
In PS and ALS alternating mode, the way of detection is as follows;
[1]Obtain detection result1 at LED off which integrates incident light amount in PD for PS during a set period
(recommended value: 1.56ms). (Detection result1 is not outputted to register).
[2]Obtain detection result2 at LED on which integrates incident light amount in PD for PS during a set period
(recommended value: 1.56ms). (Detection result2 is not outputted to register).
[3]Then, obtain detection result3 by subtracting Detection result2 and result1. So this value has external light
cancellation. By using this value, proximity sensing judgment is done if reflective object is there or not.
[4]The device integrates incident light in CLEAR photodiode and IR photodiode during a set period
(recommended value: 25msec), and then outputs the detection results to D0[15:0] and D1[15:0]
respectively.
The raw integrated data of CLEAR photodiode and IR photodiode can be obtained in D0[15:0] and D1[15:0]
respectively.
Sheet No.: OP13013EN
Attachment-7
GP2AP030A00F
ALS and PS mode
PS
(LEDoff)
PS
(LEDon)
detection
result1
detection
result2
PS
(LEDoff)
ALS
D0[15:0]
clear
result
D1[15:0]
infrared
result
D2[15:0]
detection result3
= detection result2- detection result1
PS
(LEDon)
ALS
clear
result
infrared
result
detection result3
= detection result2- detection result1
Fig.7 Output results for PS and ALS alternating mode
3.4. Count value checking mode (debug mode for PS)
Count value checking mode (debug mode for PS) can be used when developing your product.
Enable to output detection result1(LEDoff) to D1[15:0] and detection result2(LEDon) to D2[15:0] by setting “11” in
OP[1:0] register.
If you use this mode, you can examine the counts reflected from panel by subtracting result1 from result2.
Sheet No.: OP13013EN
Attachment-8
GP2AP030A00F
4. Register Mapping
4.1. Register Mapping
When Vcc power is supplied, GP2AP030A00F starts up with initializing all registers.
Table 3 Register Mapping
ADDRESS
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
10H
11H
DATA
D7
OP3
D6
OP2
D5
OP1
PRST1
PRST0
RES_A2
0
INTTYPE RES_P2
INTVAL1 INTVAL0
IS1
TL7
TL6
TL5
TL15
TL14
TL13
TH7
TH6
TH5
TH15
TH14
TH13
PL7
PL6
PL5
PL15
PL14
PL13
PH7
PH6
PH5
PH15
PH14
PH13
D0_7
D0_6
D0_5
D0_15
D0_14
D0_13
D1_7
D1_6
D1_5
D1_15
D1_14
D1_13
D2_7
D2_6
D2_5
D2_15
D2_14
D2_13
D4
OP0
D3
RES_A1
RES_P1
IS0
TL4
TL12
TH4
TH12
PL4
PL12
PH4
PH12
D0_4
D0_12
D1_4
D1_12
D2_4
D2_12
D2
D1
D0
0
PROX
FLAG_P FLAG_A
RES_A0 RANGE_A2 RANGE_A1 RANGE_A0
RES_P0 RANGE_P2 RANGE_P1 RANGE_P0
PIN1
PIN0
FREQ
RST
TL3
TL2
TL1
TL0
TL11
TL10
TL9
TL8
TH3
TH2
TH1
TH0
TH11
TH10
TH9
TH8
PL3
PL2
PL1
PL0
PL11
PL10
PL9
PL8
PH3
PH2
PH1
PH0
PH11
PH10
PH9
PH8
D0_3
D0_2
D0_1
D0_0
D0_11
D0_10
D0_9
D0_8
D1_3
D1_2
D1_1
D1_0
D1_11
D1_10
D1_9
D1_8
D2_3
D2_2
D2_1
D2_0
D2_11
D2_10
D2_9
D2_8
Initial
Value
H'00
H'00
H'00
H'00
H'00
H'00
H'FF
H'FF
H'00
H'00
H'FF
H'FF
H'00
H'00
H'00
H'00
H'00
H'00
R/W
R/W
R +clear
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
4.2. Precautions for Register setting
- Please start setting registers after power-supply voltage becomes stable up to 90% or more set value.
Please wait for some 1msec before setting registers from power-on.
- PROX, FLAG_P and FLAG_A registers are able to be cleared by writing 0 data in each register.
(but these registers can’t be written 1 data.)
- Please don’t set the address 12H and the larger ones. (Test registers are assigned in those addresses)
4.3. Register Functions
Functions and set contents of the registers are shown below.
Table 4 description of the register function
ADDR
00H
01H
02H
03H
04H,05H
06H,07H
08H.09H
0AH,0BH
0CH,0DH
0EH,0FH
10H,11H
register
OP3
OP2
OP[1:0]
PROX
FLAG_P
FLAG_A
PRST [1:0]
RES_A[2:0]
RANGE_A[2:0]
INT T YPE
RES_P[2:0]
RANGE_P[2:0]
INT VAL[1:0]
IS[1:0]
PIN[1:0]
FREQ
RST
TL
TH
PL
PH
D0
D1
D2
function
Software shutdown
Auto shutdown/Continuous operation
Operating mode selection
PS: detection/non-detection
PS: interrupt result
ALS: interrupt result
Number of measurement cycles
ALS:Resolution
ALS:Maximum measurable range
Interrupt type setting
PS:Resolution
PS:Maximum measurable range
Intermittent operating
ILED drive peak current setting
INT terminal setting
LED modulation frequency
Software Reset
ALS:low threshold setting
ALS:High threshold setting
PS:low threshold setting(Loff)
PS:High threshold setting(Lon)
ALS result:Clear
ALS result :IR
PS result
setting
0:shutdown、1:operation
0:auto shutdown, 1:continuous operating function
00:ALS and PS alternating, 01:ALS, 10:PS, 11: debug mode
0:non-detection, 1:detection
0:non-interrupt, 1:interrupt
0:non-interrupt, 1:interrupt
00：once, 01：4 cycles, 10：8 cycles, 11：16 cycles
000:8bits(0.39msec) - 111:19bits(800msec)
000:×1 - 111:×128
0:level, 1:pulse
100:8bits(0.39msec) - 111:16bits(100msec)
000:×1 - 111:×128
00:0、01:4 times、10:8 times、11:16 times
00:16.3mA、01:32.5mA、10:65mA、11:130mA
00:ALS or PS, 01:ALS, 10:PS, 11:PS(Detection/Non-detection)
0:327.5kHz、1:81.8kHz
0:not reset, 1:reset
16bits counts setting
16bits counts setting
16bits counts setting
16bits counts setting
16bits output data from Clear PD
16bits output data from IR PD
16bits output data in PS mode
Sheet No.: OP13013EN
Attachment-9
GP2AP030A00F
4.4. Register settings for Basic operation
4.4.1. Software-shutdown: OP[3] （ADDRESS:00H）
Control power supply to the circuit. LED drive circuit is always off in shutdown mode. After power on,
start with shutdown mode.
OP [3] register (Address 00H)
0: shutdown mode
1: operating mode.
4.4.2. Auto-shutdown/Continuous operation: OP[2]（ADDRESS:00H）
Select auto-shutdown mode or continuous operating mode. After shutdown, OP[3] register will be automatically
cleared.
OP [2] register (Address 00H)
0: auto shutdown mode
1: continuous operating mode.
4.4.3. Operating mode selection: OP [1:0] (ADDRESS:00H）
Select ALS mode or PS mode or alternating mode(PS + ALS).
OP [1:0] register (Address 00H)
01: ALS mode
Detection result of clear photodiode is output to D0[15:0] register (Address 0CH, 0DH).
Detection result of infrared photodiode is output to D1[15:0] register (Address 0EH, 0FH).
10: PS mode
Sensing result of detection/non-detection is output to PROX register(Address 00H).
Detection result of distance is output to D2[15:0] register (Address 10H, 11H).
00: PS and ALS alternating mode
11: Test mode for PS
Confirmation of LEDoff and LEDon counts respectively resulting in PS counts.
4.4.4. Number of measurement cycles setting: PRST[1:0] (ADDRESS:01H）
Select number of measurement cycles by setting PRST[1:0] register. Output interrupt result or judgment result
for detection/non-detection in case detection result is over threshold continuously more than the set cycles in
PRST[1:0] register.
PRST[1:0] register(Address 01H):
00: 1cycle
01: 4cycles,
10: 8cycles
11: 16cycles
・Algorithm for detecting object in PS is as follows.
<Judge the change from non-detecting status to detecting status>
Detection result is over high threshold (Lon) N times continuously : Detection
Other : Non-detection
<Judge the change from detecting status to non-detecting status>
Detection result is over low threshold (Loff) N times continuously : Non-Detection
Other : Detection
・Algorithm for detecting object in ALS is as follows.
<Judge the change from low illuminance to high illuminance>
Detection result is over high threshold (th) N times continuously : Output interrupt
Other : Non-output
<Judge the change from high illuminance to low illuminance>
Detection result is over low threshold (tl) N times continuously :Output interrupt
Other : Non-output
Sheet No.: OP13013EN
Attachment-10
GP2AP030A00F
4.4.5. Interrupt type setting: INTTYPE (ADDRESS:02H）
Select level interrupt type or pulse interrupt type.
INTTYPE register (Address 02H)
0: level interrupt type
In this case, transition from H to L in INT terminal become occurring interrupt signal and INT
terminal will hold L level until interrupt is cleared.
level interrupt type
Occuring
INT terminal High
（H→L）
Low
Clearing interrupt
Reading data
Fig.8 Interrupt output (level interrupt type)
1: pulse interrupt type
In this case, L pulse output in INT terminal become occurring interrupt signal and INT terminal
will not hold L level. Therefore we need not to clear interrupt flag(FLAG_P, FLAG_A). FLAG_P
and FLAG_A are cleared automatically in 1 clock (about 1.5us).
pulse interrupt type
Occuring interrupt
High
INT terminal
（H→L）
Reading data
Low
Fig.9 Interrupt output (pulse interrupt type )
4.4.6. Intermittent operating function: INTVAL[1:0]（ADDRESS 03H）
Enable to change intermittent operating periods by setting INTVAL [1:0] register (Address 03H).
00: 0 time, 01: 4 times, 10: 8 times, 11: 16 times
Intermittent operating will be done during setting period in RES_A[2:0] and RES_P(Resolution/measuring
time) by the number of times set by INTVAL [1:0] register.
For ALS mode, in case of RES_A [2:0]=011 16bit setting(measuring period 100msec) and INTVAL
[1:0]=01( 4 intermittent operating cycles), quiescent operation time will be 400msec(=100msec × 4 times).
For PS mode, in case of RES_P [2:0]=010 12bit setting(measuring period 6.25msec) and INTVAL [1:0]=01( 4
intermittent operating cycles), quiescent operation time will be 25msec(=6.25msec × 4 times).
For ALS mode and PS mode sequentially, in case of RES_A[2:0]=011 16bit setting(measuring period
100msec) ,RES_P [2:0]=010 12bit setting(measuring period 6.25msec) and INTVAL [1:0]=01( 4 intermittent
operating cycles), quiescent operation time will be 25msec(=6.25msec × 4 times). PS mode condition takes
priority.
Although setting a longer intermittent operating period contributes to reduce average consumption current,
it makes update period and response time for detection longer as a result. Need to set it considering your actual
conditions in use.
Ambient light sensor (ALS) mode INTVAL[1:0]=01 ： 4 times setting
ALS
Intermittent operating cycle 4 times
Proximity sensor (PS) mode
PS
(LEDoff)
PS
(LEDon)
ALS
INTVAL[1:0]=01 ：4 times setting
Intermittent operating cycle 4 times
PS
(LEDoff)
PS
(LEDon)
Proximity and Ambient light sensor (PS & ALS) mode INTVAL[1:0]=01 ：4 times setting
PS
(LEDoff)
PS
(LEDon)
ALS
Intermittent operating cycle 4 times
PS
(LEDoff)
PS
(LEDon)
ALS
*PS mode condition takes priority
Fig.10 intermittent operating for each mode
Sheet No.: OP13013EN
Attachment-11
GP2AP030A00F
4.4.7． INT terminal setting: PIN[1:0]（ADDRESS 03H）
Select output mode in INT terminal by setting PIN register (Address 03H).
The outputs by INCLUSIVE-OR(FLAG_P, FLAG_A), FLAG_P, FLAG_A, PROX can be selected.
Table 5 INT terminal setting
PIN[1:0]
Setting
Output data
00
01
10
11
Interrupt output for PS mode and ALS mode
Interrupt output for ALS mode only
Interrupt output for PS mode only
Detection/Non-detection judgment output
FLAG_P or FLAG_A
FLAG_A
FLAG_P
PROX
4.4.8. Software reset: RST（ADDRESS 03H）
Initialize all registers by writing 1 in RST register. RST register is also initialized automatically and becomes 0.
Sheet No.: OP13013EN
Attachment-12
GP2AP030A00F
5. Register settings for PS
5.1. Output value of sensing result for detection/non-detection: PROX （ADDRESS 00H）
Sensing result for detection/non-detection is output in PS mode. There is a function which clears data by writing 0 in
PROX register.
PROX register(Address 00H): 0: non-detection, 1: detection
5.2. Output value of PS interrupt result: FLAG_P（ADDRESS 00H）
FLAG_P register is output interrupt result for PS mode.
There is a function which clears by writing 0 in d FLAG_P register.
FLAG_P register (Address 00H) : 0: non-interrupt, 1: interrupt
5.3. Resolution/Measuring duration setting for PS mode: RES_P [2:0]（ADDRESS 02H）
Select measuring resolution and measuring duration for PS mode by setting RES_P [2:0] register
(Address 02H).
2 times of measuring duration is required for PS mode since detection result is gotten by subtraction of result 1
(LEDoff) and result 2 (LEDon)
If resolution is low, measuring tolerance becomes large. Please have an adjustment at your system.
Table 6. Resolution/Measuring duration setting for PS mode
RES_P[2:0]
Resolution
000
001
010
011
100
101
110
111
16bit
14bit
12bit
10bit
8bit
6bit
4bit
2bit
Measuring time
PS mode
100msec × 2
25msec × 2
6.25msec × 2
1.56msec × 2
0.39msec × 2
0.097msec × 2
0.024msec × 2
0.006msec × 2
Remarks
recommended
Not Allowed
Not Allowed
Not Allowed
Not Allowed
＊Grayed-out portions is not recommended.
5.4. Maximum measurable range for PS mode: RANGE_P[2:0]（ADDRESS 02H）
Select maximum measurable range for PS mode by setting RANGE_P [2:0] register (Address 02H).
Detect with a set range in PS mode. Maximum count value is outputted in case of incident light exceeding
maximum measurable range.
It is possible to have countermeasure for external light by setting a large count value at maximum measurable
range.
In case external light exceeds maximum sensing range, “non-detection” will be output because both detection
result 1 (LEDoff) and detection result 2 (LEDon) become maximum count values, and the subtraction
result(detection result 2 – result 1) become 0.
Changing maximum measurable range, detection result count in PS mode is also change. In case of considering
000: ×1 setting as ×1 time, count would be 1/2 times at 001: ×2 setting, 1/4 times at 010: ×4 setting. Adjusting
detecting distance by proximity low threshold PL[15:0] and PH[15:0]. It is necessary to set them considering
the condition in the actual use and evaluating at your system.
If you set Auto Light Cancellation mode, you should be at least four times(×4) the maximum measurable range
setting for PS mode(RANGE_P [2:0]).
Table 7. Maximum measurable range for PS mode
RANGE_P[2:0]
Maximum measurable range
PS mode
000
001
010
011
100
101
110
111
×1
×2
×4
×8
×16
×32
×64
×128
Remarks
recommended
recommended
＊Grayed-out portions is not recommended.
Sheet No.: OP13013EN
Attachment-13
GP2AP030A00F
5.5. LED drive peak current setting IS [1:0]（ADDRESS 03H）
Enable to select LED drive peak current by setting IS [1:0] register (Address 03H) in PS mode. In case of
changing this setting, the count obtained by subtraction detection result 1 (LEDoff) from detection result 2
(LEDon) at PS mode will change correspond to the set LED drive peak current.
In case of considering 00:16.3mA setting as x1 time, count will increase 2times at 01:32.5mA setting, 4times at
10:65mA setting, x8 times at 11:130mA setting. Please adjust detecting distance with proximity low threshold
PL[15:0] and proximity high threshold PH[15:0].
LED drive peak current will depend on Vcc voltage. (Refer to 13.1. LED drive peak current data)
Table 8. LED drive peak current
IS[1:0]
00
01
10
11
LED drive peak current
16.3 mA
32.5 mA
65 mA
130 mA
Remarks
recommended
＊Grayed-out portions is not recommended.
5.6. LED modulation frequency(duty) setting: FREQ （ADDRESS 03H）
Select modulation frequency of LED driving period.
FREQ register (Address 03H):
0: 327.5kHz (Duty during a PS measurement: 25.0%)
1: 81.8kHz (Duty during a PS measurement: 6.3%)
Changing modulation frequency setting, count obtained by subtraction detection result1 (LEDoff) from
detection result2 (LEDon) will be changed correspond to LED modulation frequency setting.
Considering 1:81.8kHz setting as ×1 time, the count at 0:327.5kHz setting would be ×4 times. Please adjust
detecting distance with proximity low threshold PL[15:0] and proximity high threshold PH[15:0].
327.5kHz setting helps to adjust threshold value at long distance in PS because the count which subtracted
detection result1 (LEDoff) from detection result2 (LEDon) would increase by ×4 times. In this case, average
consumption current increase by ×4 times, therefore it is necessary to consider your setting by evaluating your
system and condition.
The duty and average consumption current under LED drive is shown under below.
Table 9. Duty and average consumption current under LED drive
INTVAL[1:0]
00
01
10
11
LED driving duty
FREQ=0
25.0%
8.3%
5.0%
2.8%
IS[1:0]=00(16.3mA)
FREQ=0 FREQ=1
4.08
1.03
1.35
0.34
0.82
0.21
0.46
0.11
FREQ=1
6.3%
2.1%
1.3%
0.7%
LED Average consumption current [mA]
IS[1:0]=01(32.5mA)
IS[1:0]=10(65mA)
FREQ=0 FREQ=1 FREQ=0 FREQ=1
8.13
2.05
16.25
4.10
2.70
0.68
5.40
1.37
1.63
0.42
3.25
0.85
0.91
0.23
1.82
0.46
IS[1:0]=11(130mA)
FREQ=0 FREQ=1
32.50
8.19
10.79
2.73
6.50
1.69
3.64
0.91
＊Grayed-out portions is not recommended.
5.7. Proximity low threshold (Loff):PL[15:0]（ADDRESS 08H、09H）
Sets proximity low threshold in PL[15:0] register at PS mode.
Please set it with confirming at optical mounting condition in the actual use.
5.8. Proximity high threshold (Lon):PH[15:0]（ADDRESS 0AH、0BH）
Sets proximity high threshold in PH[15:0] register at PS mode.
Please set it with confirming at optical mounting condition in the actual use.
5.9．PS Detection result: D2 [15:0]（ADDRESS 10H,11H）
[PS mode]
Detection result3 of proximity sensing is output to D2[15:0] register (Address 10H, 11H).
Detection result1 and result2 is not output to register.
Detection result3 is defined as follows,
Detection result3 = Detection result2(LEDon) – Detection result1(LEDoff)
In this case, 2 times of measuring duration is required for PS mode.
Proximity sensor (PS) mode
PS
(LEDoff)
PS
(LEDon)
detection
result1
detection
result2
D2[15:0]
PS
(LEDoff)
detection result3
= detection result2- detection result1
PS
(LEDon)
detection result3
= detection result2- detection result1
Fig.11 Sensing results output for PS mode (ALC=0)
Sheet No.: OP13013EN
Attachment-14
GP2AP030A00F
6. Register settings for ALS
6.1. Output value of ALS interrupt result: FLAG_A（ADDRESS 00H）
FLAG_A register is output interrupt result for ALS mode.
There is a function which clears by writing 0 in d FLAG_A register.
FLAG_A register (Address 00H): 0: non-interrupt, 1: interrupt
6.2. Resolution/Measuring duration setting for ALS mode: RES_A [2:0]（ADDRESS 01H）
Select measuring resolution and measuring duration for ALS mode by setting RES_A [2:0] register
(Address 01H).
If resolution is low, measuring tolerance becomes large. Please have an adjustment at your system.
Table 10. Resolution/Measuring duration setting for ALS mode
RES_A[2:0]
Resolution
000
001
010
011
100
101
110
111
19bit
18bit
17bit
16bit
14bit
12bit
10bit
8bit
Measuring time
Remarks
ALS mode
800msec
400msec
200msec
recommended
100msec
recommended
25msec
6.25msec
1.56msec
0.39msec
＊Grayed-out portions is not recommended.
6.3. Maximum measurable range for ALS mode: RANGE_A[2:0]（ADDRESS 01H）
Select maximum measurable range for ALS mode by setting RANGE_A [2:0] register (Address 01H).
Detect with a set range in ALS mode. Maximum count value is outputted in case of incident light exceeding
maximum measurable range.
It is possible to have countermeasure for external light by setting a large count value at maximum measurable
range.
It is necessary to set them considering the condition in the actual use and evaluating at your system.
Table 11. Maximum measurable range for ALS mode
RANGE_A[2:0]
000
001
010
011
100
101
110
111
Maximum measurable range
ALS mode
×1
×2
×4
×8
×16
×32
×64
×128
Remarks
recommended
6.4. ALS interrupt low threshold:TL[15:0] （ADDRESS 04H,05H）
Sets interrupt low threshold in TL[15:0] register at ALS mode.
Please set it with confirming at optical mounting condition in the actual use.
6.5. ALS interrupt high threshold:TH[15:0]（ADDRESS 06H,07H）
Sets interrupt high threshold in TH[15:0] register at ALS mode.
Please set it with confirming at optical mounting condition in the actual use.
Sheet No.: OP13013EN
Attachment-15
GP2AP030A00F
6.6. ALS Detection result: D0 [15:0], D1 [15:0]（ADDRESS 0CH,0DH,0EH,0FH）
Detection result of clear photodiode is output to D0[15:0] register (Address 0CH, 0DH).
Detection result of infrared photodiode is output to D1[15:0] register (Address 0EH, 0FH).
The results of without infrared light can be obtained by some calculation using D0[15:0] and D1[15:0].
The results of without infrared light = α*D0[15:0] – β*D1[15:0]
α and β factor are decided by ratio of D1 [15:0]/D0 [15:0].
These factors are shown below in the case of no panel.
These factors might be necessary to be adjusted according to the case panel in use.
Table 12. α and β factor for illuminance calculation
Ratio of
Data1[15:0]/ Data0[15:0]
α
β
Ratio ≦ 0.67
6.650
9.653
0.67 ＜ Ratio ≦0.90
1.805
1.977
0.90 ＜ Ratio
0.000
0.000
Ambient light sensor (ALS) mode
ALS
ALS
ALS
ALS
D0[15:0]
clear
result
clear
result
clear
result
clear
result
D1[15:0]
infrared
result
infrared
result
infrared
result
infrared
result
Fig.12 Sensing results output for ALS mode
Sheet No.: OP13013EN
Attachment-16
GP2AP030A00F
7．INT terminal output mode
7.1．Proximity detection/non-detection sensing result output mode
INT terminal operates with sensing result output mode by setting PIN[1:0] register(Address 03H)
11:detection/non-detection sensing result output mode. Sensing result whether or not object is detected is able
to be read out via I2C bus interface and output from INT terminal with negative logic.
Distance
Object
Distance
Far
Proximity
low threshold (Loff) PL[15:0]
high threshold (Lon) PH[15:0]
Near
Time
INT Terminal
(H:Non-detect, L:Detect)
PROX resister
(0: Non-detect, 1:Detect）
0
1
0
1
0
Fig.13 Detection result output mode
7.2. Interrupt output mode
Operates as interrupt output mode by setting PIN[1:0] register (Address 03H) 00,01,10: interrupt output mode.
There are two kinds of output mode(level interrupt & pulse interrupt, see 4.4.5. Interrupt type setting). Below is
a description of the level interrupt type.
The result of interrupt judgment for ALS mode is written into FLAG_A register (Address 00H), and is read out
from I2C bus interface. (0: Non-interrupt, 1: interrupt.)
In this case, transition from H to L in INT terminal become occurring interrupt signal and INT terminal will be hold L
level until interrupt is cleared. Interrupt will be cleared in writing 0 data in FLAG_A register.
The result of interrupt judgment for PS mode is written into FLAG_P register (Address 00H), and is read out from I 2C
bus interface. (0: Non-interrupt, 1: interrupt.)
In this case, transition from H to L in INT terminal become occurring interrupt signal and INT terminal will be hold L
level until interrupt is cleared. Interrupt will be cleared in writing 0 data in FLAG_P register.
Normal term
High
INT terminal
（H→L） Low
Occuring
Clearing interrupt
Reading data
Fig.14 Interrupt output (level interrupt type)
Detecting operation will continue while INT terminal is L level. Update ALS detection result D0[15:0],D1[15:0] and
sensing result of object detection/non-detection status. Therefore, host needs to read data after FLAG_A and FLAG_P
register clear.
Sheet No.: OP13013EN
Attachment-17
GP2AP030A00F
For example, as shown in below diagram,
Interrupt occurs with FLAG_P=1: interrupt
Actual object moves “Detection” to “Non-detection” to “Detection” while interrupt is cleared.
In this case, while INT terminal (FLAG_P register) is hold, PROX value will be updated with result of
judgment for detection/non-detection of object.
Object
Distance
Distance
Far
Proximity
low threshold(Loff) PL[15:0]
high threshold(Lon) PH[15:0]
Near
Time
INT terminal (FLAG_P register)
（H→L）
Clearing interrupt
PROX register
0
1
0
1
(0:Non-detection, 1: Detection)
Fig.15 Interrupt output mode (level interrupt type)
0
8．Average consumption current in operation
8.1. Average consumption current in operation
Average consumption current in operation is the sum of the average current consumption value with Vcc
terminal and LED consumption. The LED driven current flows from LEDA terminal to GND terminal.
8.2. Average consumption current at ambient light sensor (ALS) mode
Average consumption current at ALS mode is typical 65uA.
Using intermittent operating function, Consumption current can be typical 30uA in intermittence duration.
8.3. Average consumption current at proximity sensor (PS) mode
In case of continuous operation, average consumption current in LED is estimated as below.
[LED average consumption current]
= LED drive peak current× LED modulating frequency setting/ (intermittence operating times+2)
[LED drive peak current]: IS[1:0] register. (00：16.3mA、01：32.5mA、10：65mA、11：130mA)
[LED modulating frequency]: FREQ register.
0：327.5kHz LED is driven with 1.5usec on time at 327.5kHz
Averaging consumption current in LED will be half.
1：81.8kHz
LED is driven with 1.5usec on time at 81.8kHz.
Averaging consumption current in LED will be 1-8 time.
[Intermittence operating cycle]：Enable to set with INTVAL[1:0]
00：0times, 01：4times, 10：8times, 11：16times
For example,
[LED drive peak current]
：16.3mA
IS[1:0]=00
[LED modulated frequency setting]
：81.8kHz
FREQ=1
[Intermittence operating time]
：4times
INTVAL[1:0]=01
In the above case,
[LED averaging consumption current] ＝ 16.3mA × 0.125 ／（4 + 2）＝ 0.339mA
Also, using auto-shut down function, it will be automatically shutdown after one operation. Utilizing it with adjusting
your system, it contributes to reduce averaging consumption current in LED.
Sheet No.: OP13013EN
Attachment-18
GP2AP030A00F
9．Countermeasure against external light noise in PS mode
9.1. Countermeasure against external light noise in PS mode
This product makes judgment of detection/non-detection by integrating light amount in PD for setting
duration. In PS mode, eliminate external noise by subtracting output at LEDon and LEDoff. In case of
exceeding maximum detectable range, judgment result will be non-detect status because both LEDoff and
LEDon are maximum counts due to over detectable range and subtract value will be 0.
Maximum detectable range is changed by setting RANGE_P[2:0] register. It contributes to make
countermeasure with setting large value in maximum detectable range.
10．Recommended operating mode/Procedure of register setting
When the ALS mode and PS mode switch, please shut down and switched again..
Shutdown
mode
PS mode
ALS mode
Fig.16 Recommended operating mode
10.1. Shutdown mode
Below is an example of shutdown mode.
If you shut down, the INT terminal states are maintained. If the INT terminal is L level, due to the increased power
consumption, it is recommended that you clear the interrupt.
Table 13 example of setting for Shutdown mode
setting
example
Operation mode
Shutdown
Detection/non-detection sensing
Clear
result
Detecting interrupt result (PS)
Clear
Detecting interrupt result (ALS)
Clear
Register
ADDRESS
00H
register
OP[3]=b’0
PROX=b’0
FLAG_P=b’0
FLAG_A=b’0
Table 14 example of register setting table for Shutdown mode
Register value
Register
bite
Hex
SYMBOL
COMMAND I
b’0000_0000
Remarks
h’00
Sheet No.: OP13013EN
Attachment-19
GP2AP030A00F
11．Sample programs
11.1. Sample program of function.
#include <stdlib.h>
/////////////// Parameter define
#define ADDR_SLAVE_W 0x88
#define ADDR_SLAVE_R 0x89
//slave address of GP2AP030A00F for write mode
//slave address of GP2AP030A00F for read mode
#define I2C_ACK (0)
int16 data_read( int addr);
{
int16 read_data = 0x0000;
unsigned char ack;
i2c_start();
//start condition
ack = i2c_write(ADDR_SLAVE_W); //slave address send
if (ack != I2C_ACK) {
m_ErrorMsg();
}
ack = i2c_write(addr);
//word address send
if (ack != I2C_ACK) {
m_ErrorMsg();
}
i2c_stop();
i2c_start();
ack = i2c_write(ADDR_SLAVE_R); //slave address send
if (ack != I2C_ACK) {
m_ErrorMsg();
}
read_data = i2c_read(0);
//nack
i2c_stop();
return read_data;
} //End of data_read function
void data_write(int word_addr, int write_data)
{
unsigned char ack;
i2c_start();
ack = i2c_write(ADDR_SLAVE_W);
if (ack != I2C_ACK) {
m_ErrorMsg();
return;
}
ack = i2c_write(word_addr );
if (ack != I2C_ACK) {
m_ErrorMsg();
return;
}
ack = i2c_write(write_data);
if (ack != I2C_ACK) {
m_ErrorMsg();
return;
}
i2c_stop();
return;
//start condition
//slave address send
//word address send
//write data send
Sheet No.: OP13013EN
Attachment-20
GP2AP030A00F
}
11.2. Sample program for PS and ALS alternating mode
Table 15 example of sample program setting for PS mode
setting
Example
register
Operation mode
Operation status(active)
OP[3]=b’1
Operation mode
Continuous operation
OP[2]=b’1
Operation mode
PS and ALS mode
OP[1:0]=b’00
Number of detection*1
×4(initial setting)
PRST[1:0]=b’01
Resolution(ALS)
14bit(Measuring time25msec)
RES_A[2:0]=b’100
Maximum detectable
×8(initial setting)
RANGE_A[2:0]=b’011
range(ALS)
RES_P[2:0]=b’011
Resolution(PS)
10bit(Measuring time1.56msec ×2)
Maximum detectable
×4
RANGE_P[2:0]=b’010
range(PS)
Intermittence duration
0time
INTVAL[1:0]=b’00
LED drive peak current
130mA
IS[1:0]=b’11
INT terminal setting
PS(Detection/Non-detection)
PIN[1:0]=b’11
LED modulation frequency
327.5kHz
FREQ=b’0
Low threshold (PS)
10 counts(Loff 80mm)
TL[15:0]=b’ 0000_0000_0000_1010(d’10)
High threshold (PS)
10 counts(Lon 60mm)
TH[15:0]=b’0000_0000_0000_1010(d’10)
*1 Non-detection state is set to 4 cycles. Detection state is set to 1 cycle. Please refer to the following sample
program.
---------------------------------- Sample program for PS and ALS alternating mode ---------------------------------#define Low_lux_mode 0
#define High_lux_mode 1
#defien NO_PROX 0
#define PROX 1
#define NO_INTERRUPT 0
#define INTERRUPT 1
int ALS_MODE = Low_lux_mode;
int PROX_MODE = NO_PROX;
// Initial setting
data_write(0x01, 0x63);
data _write(0x02, 0x1A);
data _write(0x03, 0x3C);
data _write(0x08, 0x0A);
data _write(0x09, 0x00);
data _write(0x0A,0x0A);
data _write(0x0B,0x00);
data _write(0x00, 0xC0);
//
//
//
//
//
//
//
//
Write 63h in 1st register ・・・PRST ×4, ALS mode(res:14bit, range×8)
Write 1Ah in 2nd register ・・・PS mode(res:10bit, range×4)
Write 3Ch in 3rd register ・・・130mA, Detection/Non-detection judgment
Write 0Ah in 8th register ・・・PS mode LTH:10
Write 00h in 9th register ・・・PS mode
Write 0Ah in 10th register ・・・PS mode HTH:10
Write 00h in 11th register ・・・PS mode
Write C0h in 00th register ・・・PS and ALS alternating mode
for(;;) {
switch(INTERRUPT_STATE){
case NO_INTERRUPT:
delay_ms(200);
D0 = data_read(0x0c);
temp = data_read(0x0d);
D0 = (temp << 8) | D0
D1 = data_read(0x0e);
temp = data_read(0x0f);
D1 = (temp << 8) | D1
Sheet No.: OP13013EN
Attachment-21
GP2AP030A00F
if(ALS_mode == Low_lux_mode){
if(D0 > 16000){
ALS_mode = High_lux_mode;
data_write(0x00, 0x0C);
if(PROX == NO_PROX)
data_write(0x01, 0x67);
else
data_write(0x01, 0x27);
data_write(0x00, 0xCC);
// Low -> High lux mode
//shutdown
//prst 4, 14bit , ×128
//prst 1, 14bit , ×128
}else{
ratio = (float)data_als1/(float)data_als0;
if(ratio<=0.67)
lux = (6.650*(float)data_als0 – 9.653*(float)data_als1);
else if(ratio>=0.9)
lux = 0;
else
lux = (1.805*(float)data_als0 – 1.977*(float)data_als1);
}
}else{
if(D0 < 1000){
ALS_mode = Low_lux_mode;
// High ->Low lux mode
data_write(0x00, 0x0C);
//shutdown
if(PROX == NO_PROX)
data_write(0x01, 0x63); //prst 4, 14bit, ×8
else
data_write(0x01, 0x23); //prst 1, 14bit, ×8
data_write(0x00, 0xCC);
}
else{
ratio = (float)data_als1/(float)data_als0;
if(ratio<=0.67)
lux = 16*(6.650*(float)data_als0 – 9.653*(float)data_als1);
else if(ratio>=0.9)
lux = 0;
else
lux = 16* (1.805*(float)data_als0 – 1.977*(float)data_als1);
}
}
break;
case INTERRUPT:
data = data_read(10h);
if((data & 0x08) == 0x08){
PROX_MODE = PROX;
DISPLAY CONTROL;
if(ALS_MODE == Low_lux_mode)
data_write(0x01,0x23);
else
data_write(0x01, 0x27);
}
else if((data & 0x08) == 0x00){
PROX_MODE = NO_PROX;
DISPLAY CONTROL;
if(ALS_MODE == Low_lux_mode)
data_write(0x01,0x63);
else
data_write(0x01, 0x67);
break;
//prst 1, 14bit, ×8
//prst 1, 14bit, ×128
//prst 4, 14bit, ×8
//prst 4, 14bit, ×128
Sheet No.: OP13013EN
Attachment-22
GP2AP030A00F
}
}
-------------------------------
end of Sample program for PS and ALS alternating mode -------------------------------
11.3. Sample program for ALS mode
Below is a sample program.
Table 16 example of sample program setting for ALS mode
setting
example
register
Operation mode
Operation status(active)
OP[3]=b’1
Operation mode
Continuous operation
OP[2]=b’1
Operation mode
ALS mode
OP[1:0]=b’01
Resolution(ALS)
14bit(Measuring time25msec)
RES_A[2:0]=b’100
Maximum detectable
×8(initial setting)
RANGE_A[2:0]=b’011
range(ALS)*1
*1 The range(×8 or ×128) is switched according to the D0 data.
Low_lux_mode:×8,High_lux_mode:×128
--------------------------------- Sample program for ALS mode --------------------------------#define Low_lux_mode 0
#define High_lux_mode 1
int ALS_MODE = Low_lux_mode;
// Initial setting
data_write(0x01, 0x23);
// Write 23h in 1st register ・・・ALS mode(res:14bit, range×8)
data_write(0x00, 0xD0);
// Write D0h in 00th register ・・・ALS mode
for(;;) {
delay_ms(200);
D0 = data_read(0x0c);
temp = data_read(0x0d);
D0 = (temp << 8) | D0
D1 = data_read(0x0e);
temp = data_read(0x0f);
D1 = (temp << 8) | D1
if(ALS_mode == Low_lux_mode){
if(D0 > 16000){
ALS_mode = High_lux_mode;
// Low -> High lux mode
data_write(0x00, 0x0C);
//shutdown
data_write(0x01, 0x27);
//prst 1, 14bit , ×128
data_write(0x00, 0xCC);
}else{
ratio = (float)data_als1/(float)data_als0;
if(ratio<=0.67)
lux = (6.650*(float)data_als0 – 9.653*(float)data_als1);
else if(ratio>=0.9)
lux = 0;
else
lux = (1.805*(float)data_als0 – 1.977*(float)data_als1);
}
}else{
if(D0 < 1000){
ALS_mode = Low_lux_mode;
// High ->Low lux mode
data_write(0x00, 0x0C);
//shutdown
data_write(0x01, 0x23);
//prst 1, 14bit, ×8
data_write(0x00, 0xCC);
}
else{
ratio = (float)data_als1/(float)data_als0;
if(ratio<=0.67)
Sheet No.: OP13013EN
Attachment-23
GP2AP030A00F
lux = 16*(6.650*(float)data_als0 – 9.653*(float)data_als1);
else if(ratio>=0.9)
lux = 0;
else
lux = 16*(1.805*(float)data_als0 – 1.977*(float)data_als1);
}
}
}
------------------------------
End of Sample program for ALS mode ------------------------------
Sheet No.: OP13013EN
Attachment-24
GP2AP030A00F
12．Recommended Window Size (Reference)
12.1. Without light shield
Light Shielding area
Window
Light Shielding area
Detector
IR Emitter
GP2AP030A00F
h = n×r / (n - 1) =1.2mm
n = 1.58 n : mold resin refractive index
r = 0.45 r : radius
Cg = (h+g)×tan30
Rt = (h+g)×tan30
g≦0.4mm（recommended）g : distance between sensor and panel
t≦0.7mm（recommended）t : thickness of panel
g+t≦1.1mm（recommended）
Fig.17
Recommended window size (Without light shield)
1. Please print or tape up not to transmit infrared.
2. Please execute the Light Shielding between windows.
3. Even recommended window size may cause malfunction depending on the reflection from the panel.
In this case, it is effective to be extended the printing area between windows, but affects detection distance and ALS
output.
4.Please confirm that there is no problem with an actual machine in consideration of the implementation gap, the
misalignment of the windows and voltage variation.
5. The recommended transmissivity (400nm≦λ≦1100nm) of the window is more than 85%.
6. In case that malfunction is not resolved under the window design described above, the light shield is
recommended to set, which described below : 12.2.With light shield.
Sheet No.: OP13013EN
Attachment-25
GP2AP030A00F
12.2. With light shield
Light Shielding area
Window
Detector
IR Emitter
Light Shielding area
GP2AP030A00F
h = n×r / (n - 1) =1.2mm
n = 1.58 n : mold resin refractive index
r = 0.45 r : radius
Cg = (h+g)×tan30
Rt = (h+g)×tan30
g : thickness of light shield(recommended material : Silicon)
t≦0.7mm（recommended）t : thickness of panel
Fig.18 Recommended window size (With light shield)
1. The light shield is recommended to be set to decrease the reflected light from the window.
2. The light shield is recommended to be made by a black Silicon material that doesn’t transmit infrared.
3. Even recommended window size may cause malfunction depending on the reflection from the panel.
In this case, it is effective to be extended the printing area between windows, but affects detection distance and
ALS output.
4. Please confirm that there is no problem with an actual machine in consideration of the implementation gap, the
misalignment of the windows and voltage variation.
5. The recommended transmissivity (400nm≦λ≦1100nm) of the window is more than 85%.
Sheet No.: OP13013EN
Attachment-26
GP2AP030A00F
13. Data (Reference)
13.1. LED drive peak current
13.1.1. LED drive peak current vs. VLED (Vcc=VLED)
LED drive current vs. VLED(Vcc=3.0V)
LED peak current[mA]
160
150
140
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
ILED=130mA(IS[1:0]=11)
130
120
110
100
<Recommended>
90
80
70
ILED=65mA(IS[1:0]=10)
60
50
40
30
ILED=32.5mA(IS[1:0]=01)
20
10
0
ILED=16.3mA(IS[1:0]=00)
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
4.6
4.8
5
5.2
5.4
VLED[V]
Fig.19 LED drive peak current vs. VLED
13.1.2. LED drive peak current vs. Vcc (VLED=3V)
LED peak current[mA]
LED drive current vs. Vcc(VLED=3.0V)
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
ILED=130mA(IS[1:0]=11)
<Recommended>
ILED=65mA(IS[1:0]=10)
ILED=32.5mA(IS[1:0]=01)
ILED=16.3mA(IS[1:0]=00)
2.2
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
4.6
4.8
5
5.2
5.4
Vcc[V]
Fig.20 LED drive peak current vs. Vcc
Sheet No.: OP13013EN
Attachment-27
1.5
GP2AP030A00F
13.2. Spectral Responsivity
Fig.21 Spectral Responsivity
13.3. Proximity sensor (PS) mode
Sensor output counts vs. distance
Fig22 Sensor output counts vs. distance
Sheet No.: OP13013EN
Attachment-28