参数资料
型号: ISL29033IROZ-T7
厂商: Intersil
文件页数: 7/15页
文件大小: 0K
描述: IC PHOTO DETECTOR AMBIENT 6-ODFN
标准包装: 3,000
带接近传感器:
波长: 540nm
电源电压: 2.25 V ~ 3.63 V
输出类型: 电流
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-WDFN 裸露焊盘
包装: 带卷 (TR)
ISL29033
specification (2.25V to 3.63V), the following step is
recommended: write 0x00 to register 0x00. Wait a few seconds,
and then rewrite all registers to the desired values. A hardware
reset method can be used, if preferred, instead of writing to the
test registers. For this method, set V DD = 0V for 1 second or more,
power backup at the required slew rate, and write the registers to
the desired values.
Power-Down
To put the ISL29033 into a power-down state, the user can set
[7 to 5] bits to 0 in Register 0. Or more simply, set all of
Register 0 to 0x00.
I 2 C Interface
There are eight 8-bit registers available inside the ISL29033. The
two command registers define the operation of the device. The
command registers do not change until the registers are
overwritten. The two 8-bit data read-only registers are for the ADC
output. The data registers contain the ADC's latest digital output,
or the number of clock cycles in the previous integration period
(Figure 2).
The ISL29033 I 2 C interface slave address is internally hard-wired as
1000100. When 1000100x, with x as R or W, is sent after the Start
condition, the device compares the first 7 bits of this byte to its
address, and matches. Figure 3 shows a sample one-byte read, and
Figure 4 shows a sample one-byte write. The I 2 C bus master
always drives the SCL (clock) line, while either the master or the
slave can drive the SDA (data) line. Every I 2 C transaction begins
with the master asserting a start condition (SDA falling while SCL
remains high). The following byte is driven by the master and
includes the slave address and the read/write bit. The receiving
device is responsible for pulling SDA low during the
acknowledgement period. Every I 2 C transaction ends with the
master asserting a stop condition (SDA rising while SCL remains
high).
For more information about the I 2 C standard, please consult the
Philips? I 2 C specification documents.
FIGURE 2. I 2 C TIMING DIAGRAM
I 2 C DATA
START
DEVICE ADDRESS
W A
REGISTER ADDRESS
STOP START
DEVICE ADDRESS
A
DATA BYTE0
I 2 C SDA
IN
A6 A5 A4 A3 A2 A1 A0 W A R7 R6 R5 R4 R3 R2 R1 R0 A
A6 A5 A4 A3 A2 A1 A0 W
A
SDA DRIVEN BY ISL29033
I 2 C SDA
OUT
SDA DRIVEN BY MASTER
A
SDA DRIVEN BY MASTER
A
SDA DRIVEN BY MASTER
A D7 D6 D5 D4 D3 D2 D1 D0
I 2 C CLK
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
1
2
3
4
5
6
7
8
9
FIGURE 3. I 2 C READ TIMING DIAGRAM SAMPLE
7
FN7656.2
February 25, 2013
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