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| 型号： | MCP9800DM-TS1 |
| 厂商： | Microchip Technology |
| 文件页数： | 16/42页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD TEMP SENSOR MCP9800 |
| 标准包装： | 1 |
| 传感器类型： | 温度 |
| 传感范围： | -55°C ~ 125°C |
| 接口： | I²C，SM 总线 |
| 灵敏度： | ±0.5°C |
| 电源电压： | 2.7 V ~ 5.5 V |
| 嵌入式： | 是，MCU，8 位 |
| 已供物品： | 板，CD |
| 已用 IC / 零件： | MCP9800 |
| 产品目录页面： | 683 (CN2011-ZH PDF) |
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MCP9800/1/2/3
5.3.1
AMBIENT TEMPERATURE
EQUATION 5-2:
REGISTER (T A )
The MCP9800/1/2/3 has a 16-bit read-only Ambient
T A = Code ? 2
– 4
Temperature register that contains 9-bit to 12-bit
temperature data. (0.5°C to 0.0625°C resolutions,
respectively). This data is formatted in two’s
complement. The bit assignments, as well as the
corresponding resolution, is shown in the register
assignment below.
The refresh rate of this register depends on the
selected ADC resolution. It takes 30 ms (typical) for
9-bit data and 240 ms (typical) for 12-bit data. Since
this register is double-buffered, the user can read the
register while the MCP9800/1/2/3 performs
Analog-to-Digital conversion in the background. The
decimal code to ambient temperature conversion is
Where:
T A = Ambient Temperature (°C)
Code = MCP9800 output in decimal
REGISTER 5-2:
Upper Half:
AMBIENT TEMPERATURE REGISTER (T A ) – ADDRESS < 0000 0000 >b
R-0
Sign
R-0
2 6 °C
R-0
2 5 °C
R-0
2 4 °C
R-0
2 3 °C
R-0
2 2 °C
R-0
2 1 °C
R-0
2 0 °C
bit 15
Lower Half:
bit 8
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
2
-1 °C/bit
2 -2 °C
2 -3 °C
2 -4 °C
0
0
0
0
bit 7
Legend:
bit 0
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
Note 1:
When the 0.5°C, 0.25°C or 0.125°C resolutions are selected, bit 6, bit 7 or bit 8 will remain clear < 0 >,
respectively.
DS21909D-page 16
? 2010 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP9800DM-TS1 | 制造商:Microchip Technology Inc 功能描述:TEMPERATURE SENSOR DEMO BOARD |
| MCP9801 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2-Wire High-Accuracy Temperature Sensor |
| MCP9801A0-M/MS | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2-Wire High-Accuracy Temperature Sensor |
| MCP9801A0-M/OT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2-Wire High-Accuracy Temperature Sensor |
| MCP9801A0-M/SN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2-Wire High-Accuracy Temperature Sensor |
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