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參數(shù)資料
| 型號： | ADT7318ARU |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 3Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | QSOP-16 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 279K |
| 代理商： | ADT7318ARU |
ADT7316/7317/7318
–15–
REV. PrH
Preliminary Technical Data
PRELIMINARY TECHNICAL DATA
07h
Internal Temp. High
28h
08h
Internal Temp. Low
00h
09h
External Temp. High
28h
0Ah
External Temp. Low
00h
0Bh
DAC A High Register
00h
0Ch DAC A Low Register (ADT7316/17 only)
00h
0Dh
DAC B High Register
00h
0Eh DAC B Low Register (ADT7316/17 only)
00h
0Fh
DAC C High Register
00h
10h
DAC C Low Register (ADT7316/17 only) 00h
11h
DAC D High Register
00h
12h
DAC D Low Register (ADT7316/17 only) 00h
13h
Interrupt Status Register
00h
14h
Int. Temp. Value Register (8 MSBs)
00h
15h
Int. Temp. Value Register (2 LSBs)
00h
16h
Ext. Temp. Value Register (8 MSBs)
00h
17h
Ext. Temp. Value Register (2 LSB)
00h
MANUFACTURER’S ID REGISTER (8-BITS)
This register contains the company identification number
for this chip.
DIE REVISION REGISTER
This register is divided into the four lsbs representing the
Stepping and the four msbs representing the Version. The
Stepping contains the manufacturers code for minor revi-
sions or steppings to the device. The Version is the
ADT7316/17/18 version number. Since the ADT7316/17/
18 is the first part in this family, it’s version number is
0000b.
TEST 1 AND TEST 2 REGISTERS
These registers are used by the manufacturer for testing
purposes. Writing to these registers during normal opera-
tion may lead to erroneous events
ONE-SHOT REGISTER
The One-Shot Register is a write only register. It is used
to initiate a single temperature conversion and comparison
cycle when the ADT7316/17/18 is in standby mode, after
which the device returns to standby. This is not a data
register as such and it is the write operation that causes the
one-shot conversion. The data written to this address is
irrelevant and is not stored.
INTERRUPT STATUS REGISTER
This 8-bit read only register reflects the status of any of
the interrupts that can cause the
ALERT/TI pin to go
active.
Table IV. Status Register (Write)
Bit
Name
Function
7
IHigh
1 when Int. High Temp. is exceeded
6
ILow
1 when Int. Low Temp. is exceeded
5
EHigh
1 when Ext. High Temp. is exceeded
4
ELow
1 when Ext. Low Temp is exceeded
3
Open
1 when Ext Sensor is open circuit
CONFIGURATION REGISTER 1
This Configuration Register is an 8-bit read/write register
that is used to set the operating modes of the ADT7316/
17/18. The 5 MSBs are used to set the operating modes,
see Table 7. D0, D1 and D2 are used for factory settings
and must have zeros written to them during normal opera-
tion.
Table VI.
Configuration Register 1
D7
D6
D5
D4
D3
D2
D1
D0
TI
PD
REF
LDAC
N/A
0*
*Default settings at Power-up.
Table VII.
Configuration Register 1 Settings
Bit
Function
D7
T I
0 = Temperature Indicator
ALERT/TI
Enable
1 = Temperature Indicator
ALERT/TI
Disable
D6
P D
This bit is used to power down the DAC
and temperature sensor circuits. In
powerdown mode the serial interface is
still active and the user is capable of
communicating with any register.
1 = Powerdown mode , 0 = Power-up
mode
D5
R E F
1 =
External, 0 = Internal
D4
D3
Function
0
LSB write to the DAC register generates
LDAC which updates the single addressed
DAC only.
0
1
LSB write to the DAC register generates
LDAC which updates the 2 DACs (in
pairs of DACs A&B or DACs C&D due
to buffer limitations).
1
0
LSB write to the DAC register generates
LDAC which updates all four DACs
simultaneously.
11
LDAC generated from LDAC Register
(4 Bits, 1 per DAC)
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