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參數(shù)資料
| 型號(hào)： | AD7414SRT-1REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | PLASTIC, SOT-23, 6 PIN |
| 文件頁(yè)數(shù)： | 12/12頁(yè) |
| 文件大?。?/td> | 182K |
| 代理商： | AD7414SRT-1REEL7 |
AD7414
–9–
REV. PrB
Preliminary Technical Data
PRELIMINAR
Y
TECHNICAL
DA
TA
tion is determined at the beginning and cannot subse-
quently be changed without starting a new operation.
WRITING TO THE AD7414
Depending on the register being written to, there are two
different writes for the AD7414.
Writing to the Address Pointer Register for a subsequent
read.
In order to read data from a particular register, the Ad-
dress Pointer Register must contain the address of that
register. If it does not, the correct address must be written
to the Address Pointer Register by performing a single-
byte write operation, as shown in Figure 5. The write
operation consists of the serial bus address followed by the
address pointer byte. No data is written to any of the data
registers. A read operation is then performed to read the
register.
Writing a single byte of data to the Configuration Regis-
ter, THIGH Register or TLOW Register.
All three registers are 8-bit registers so only one byte of
data can be written to each register. Writing a single byte
of data to one of these registers consists of the serial bus
address, the data register address written to the Address
Pointer Register, followed by the data byte written to the
selected data register. This is illustrated in Figure 6.
READING DATA FROM THE AD7414
Reading data from the AD7414 is a one or two byte op-
eration. Reading back the contents of the Configuration
Register, THIGH Register or TLOW Register is a single byte
read operation as shown in Figure 7. The register address
previously having been set up by a single byte write opera-
tion to the Address Pointer Register. Once the register
address has been set up, any number of reads can be sub-
sequently done from that register without having to write
Figure 7. Reading a single byte of data from a selected
register
R/
W
1
SCL
SDA
00
1
A2
A1
A0
D15
D1 4
D1 3
D 1 2
D10
D1 1
D9
D 8
ACK. BY
MAS TER
START BY
MA STE R
FRAM E 1
SERIA L BUS ADDRESS BYTE
FRAM E 2
M OST SIGNIFICANT DATA BYTE FRO M AD7414
19
1
ACK. BY
AD7414
9
D7
D6
D5
D4
D3
D2
D1
D0
NO ACK. BY
MAS TER
STOP BY
MA STE R
FRAM E 3
LEAST SIG NIFICANT DA TA BY TE FRO M AD7414
19
SCL (CO NTINUED)
SDA (CO NTI NUED)
Figure 8. Reading two bytes of data from the Tempera-
ture Value Register
SDA
NO ACK. BY
MAS TER
START BY
M ASTER
FRAM E 1
SERIA L BUS ADDRESS BYTE
FRAM E 2
SING LE DA TA BYTE FROM AD7414
ACK. BY
AD7414
19
1
9
D7
D6
D5
D4
D3
D2
D1
D0
R/
W
A0
A1
A2
1
0
1
SCL
STO P BY
MAS TER
0
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| AD7415 | 制造商:AD 制造商全稱:Analog Devices 功能描述:0.5C Accurate, 10-Bit Digital Temperature Sensors in SOT-23 |
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