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参数资料
| 型号： | ISL29002 |
| 厂商： | Intersil Corporation |
| 英文描述： | Light-to-Digital I2C Sensor(光电I2C传感器) |
| 中文描述： | 光到数字的I2C传感器（光电传感器的I2C） |
| 文件页数： | 6/10页 |
| 文件大小： | 196K |
| 代理商： | ISL29002 |
6
FN7465.2
December 1, 2006
Command Register
The command register is used to define the ADC's
operations. Table 1 shows the primary commands used to
control the ADC.
Note that there are two classes of operating commands:
three for internal timing, and three for external (arbitrary)
timing.
When using any of the three internal timing commands, the
device self-times each conversion, which is nominally 110ms
(with
R
EXT
= 100k
Ω).
When using any of the three external timing commands,
each command received by the device ends one conversion
and begins another. The integration time of the device is
thus the time between one I
2
C external timing command and
the next. The integration time can be between 1ms and
100ms. The external timing commands can be used to
synchronize the ADC’s integrating time to a PWM dimming
frequency in a backlight system in order to eliminate noise.
TABLE 1. COMMAND REGISTERS AND FUNCTIONS
COMMAND
FUNCTION
8C(hex)
ADC is powered-down. To enable ADC from a powered-down state, send any command to the ISL29002.
0C(hex)
ADC is reset. A reset restarts the counter value to zero and returns the clock cycle to zero.
00(hex)
Internal Timing Mode. Integration
time is 110ms per photodiode.
ADC converts Diode 1’s current (I
DIODE1
) into an unsigned-magnitude 16-bit data.
04(hex)
ADC converts Diode 2’s current (I
DIODE2
) into unsigned-magnitude 16-bit data.
08(hex)
ADC converts I
DIODE1
-I
DIODE2
into 2’s-complement 16-bit data.
30(hex)
External Timing Mode. Each external
timing command sent to the device
ends one integration period and
begins another.
ADC converts Diode 1’s current (I
DIODE1
) into unsigned-magnitude 16-bit data.
34(hex)
ADC converts Diode 2’s current (I
DIODE1
) into unsigned-magnitude 16-bit data.
38(hex)
ADC converts I
DIODE1
-I
DIODE2
into 2’s-complement 16-bit data.
I
2
C communication test. The value written to the command register can be read
back via the I
2
C bus.
1xxx_xxxx
(binary)
FIGURE 11A.
I
2
C
WRITE TIMING DIAGRAM SAMPLE
FIGURE 11B.
I
2
C
READ TIMING DIAGRAM SAMPLE
FIGURE 11.
Start
W
A
A
A6
A5
A4
A3
A2
A1
A0
W
A
R7
R6
R5
R4
R3
R2
R1
R0
A
A
A
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
STOP
SDA DRIVEN BY MASTER
POWER DOWN CMD 8C(h)
I
2
C CLK In
SDA DRIVEN BY MASTER
I
2
C SDA In
I
2
C SDA Out
DEVICE ADDRESS 40(h) to 47(h)
I
2
C DATA
Start
A
A
A6
A5
A4
A3
A2
A1
A0
R
A
A
A
A
D7
D6
D5
D4
D3
D2
D1
D0
A
D7
D6
D5
D4
D3
D2
D1
D0
A
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
I
2
C CLK In
SDA DRIVEN BY MASTER
R/W
SDA DRIVEN BY ISL29002
I
2
C SDA In
I
2
C SDA Out
DEVICE ADDRESS 44(HEX)
I
2
C DATA
MSB OF SENSOR READING
STOP
LSB OF SENSOR READING
SDA DRIVEN BY ISL29002
ISL29002
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| ISL29003IROZ | 功能描述:IC SENSOR LIGHT-DGTL I2C 6-ODFN RoHS:是 类别:传感器，转换器 >> 光学 - 光电探测器 - 环境光传感器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 产品变化通告:Product Discontinuation 25/Jun/2012 标准包装:2,500 系列:- 带接近传感器:无 波长:- 电源电压:1.7 V ~ 2 V 电流 - 暗（标准）:- 电流 - 光（典型值）:- 输出类型:数字 - I²C 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UDFN 裸露焊盘 包装:带卷 (TR) |
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