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参数资料
| 型号： | MPL115A2T2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC BAROMETER I2C DGTL MINI 8LGA |
| 标准包装： | 5,000 |
| 压力类型： | 绝对 |
| 工作压力： | 7.2 PSI ~ 16.6 PSI，50 ~ 115 kPa |
| 输出： | 数字 |
| 精确度： | ±1% |
| 电源电压： | 2.375 V ~ 5.5 V |
| 端接类型： | PCB |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 8-TLGA |
| 出厂设置： | * |
The polynomial can be evaluated ( Equation 1 ) as a sequence of 3 MACs:
Pcomp = a0 + ( b1 + c12 ? Tadc ) ? Padc + b2 ? Tadc
b1
c12
Tadc
a0
Padc
a1
y1
b2
y
PComp
Tadc
Please refer to Freescale application note AN3785 for more detailed notes on implementation.
3.4
I 2 C Device Read/Write Operations
All device read/write operations are memory mapped. Device actions e.g. “Start Conversions” are controlled by writing to the
appropriate memory address location.
?
?
For I 2 C the 7-bit Device Address (from Table 2) has a read/write toggle bit, where the least significant bit is ‘1’ for read
operations or ‘0’ for write operations. The Device Address is 0xC0 for a Write and the Device Address is 0xC1 for a Read .
The most significant bit in the Command tables below is not used and is don't care (X). In examples given it’s set to ‘0’.
Refer to Sensor I 2 C Setup and FAQ Application Note AN4481 for more information on I 2 C communication between the sensor
and host controller.
Table 3. I 2 C Write Commands
Command
Devices Address + Write bit
Start Conversions
Binary
1100 0000
X001 0010
HEX (1)
0xC0
0x12
X = Don’t care
1 = The command byte needs to be paired with a 0x00 as part of the I 2 C exchange to complete the passing of Start Conversions.
MPL115A2
Sensors
Freescale Semiconductor, Inc.
7
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