參數(shù)資料
型號： EVAL-AD7150EBZ
廠商： Analog Devices Inc
文件頁數(shù)： 7/28頁
文件大小： 0K
描述： BOARD EVAL FOR AD7150
特色產(chǎn)品： AD715x Series Capacitance-to-Digital Converters & Evaluation Board
標(biāo)準(zhǔn)包裝： 1
傳感器類型： 觸摸，電容式
接口： I²C
電源電壓： 2.7 V ~ 3.6 V
嵌入式： 否
已供物品： 板，電池
已用 IC / 零件： AD7150
產(chǎn)品目錄頁面： 781 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： AD7150BRMZ-REEL-ND - IC CAP CONV 2CH ULT LP 10MSOP
AD7150BRMZ-ND - IC CAP CONV 2CH ULT LP 10MSOP
AD7150
Rev. 0 | Page 15 of 28
STATUS REGISTER
Address Pointer 0x00
8 Bits, Read-Only, Default Value 0x53 Before Conversion, 0x54 After Conversion
The status register indicates the status of the part. The register can be read via the 2-wire serial interface to query the status of the outputs,
check the CDC finished conversion, and check whether the CAPDAC has been changed by the autoCAPDAC function.
Table 6. Status Register Bit Map
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Mnemonic
PwrDown
DacStep2
OUT2
DacStep1
OUT1
C1/C2
RDY2
RDY1
Default
0
1
0
1
0
1
Table 7. Status Register Bit Descriptions
Bit
Mnemonic
Description
7
PwrDown
PwrDown = 1 indicates that the part is in a power-down mode or that the part VDD is below the power supply
monitor threshold voltage.
6
DacStep2
DacStep2 = 0 indicates that the Ch2 CAPDAC value was changed after the last CDC conversion as part of the
AutoDac function. The bit value is updated after each finished CDC conversion on this channel.
5
OUT2
OUT2 = 1 indicates that the Ch2 data (CIN2 capacitance) crossed the threshold, according to the selected
comparator mode of operation. The bit value is updated after each finished CDC conversion on this channel.
4
DacStep1
DacStep1 = 0 indicates that the Ch1 CAPDAC value was changed during the last conversion as part of the
AutoDac function. The bit value is updated after each finished CDC conversion on this channel.
3
OUT1
OUT1 = 1 indicates that the Ch1 data (CIN1 capacitance) crossed the threshold, according to the selected
comparator mode of operation. The bit value is updated after each finished CDC conversion on this channel.
2
C1/C2
The C1/C2 = 0 indicates that the last finished CDC conversion was on Channel 1.
The C1/C2 = 1 indicates that the last finished CDC conversion was on Channel 2.
1
RDY2
RDY2 = 0 indicates a finished CDC conversion on Ch2. The bit is reset back to 1 when the Ch2 data register is
read via the serial interface or after the part reset or power-up.
0
RDY1
RDY1= 0 indicates a finished CDC conversion on Ch1. The bit is reset back to 1 when the Ch1 data register is
read via serial interface or after the part reset or power-up.
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