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參數(shù)資料
| 型號(hào)： | DS75U/T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT |
| 封裝： | MICRO MAX PACKAGE-8 |
| 文件頁數(shù)： | 15/15頁 |
| 文件大?。?/td> | 338K |
| 代理商： | DS75U/T&R |
DS75
9 of 14
CONFIGURATION REGISTER
The configuration register allows the user to program various DS75 options such as conversion
resolution, thermostat fault tolerance, thermostat polarity, thermostat operating mode, and shutdown
mode. The configuration register is arranged as shown in Figure 5 and detailed descriptions of each bit
are provided in Table 4. The user has read/write access to all bits in the configuration register except the
MSb, which is a reserved read-only bit. The entire register is volatile, and thus powers–up in its default
state.
Figure 5. CONFIGURATION REGISTER
MSb
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
LSb
0
R1
R0
F1
F0
POL
TM
SD
Table 4. CONFIGURATION REGISTER BIT DESCRIPTIONS
BIT NAME
FUNCTIONAL DESCRIPTION
0
Reserved
Power-up state = 0
The master can write to this bit, but it will always read out as a 0.
R1
Conversion Resolution Bit 1
Power-up state = 0
Sets conversion resolution (see Table 5)
R0
Conversion Resolution Bit 0
Power-up state = 0
Sets conversion resolution (see Table 5)
F1
Thermostat Fault Tolerance Bit 1
Power-up state = 0
Sets the thermostat fault tolerance (see Table 6).
F0
Thermostat Fault Tolerance Bit 0
Power-up state = 0
Sets the thermostat fault tolerance (see Table 6).
POL
Thermostat Output (O.S.) Polarity
Power-up state = 0
POL = 0 — O.S. is active low.
POL = 1 — O.S. is active high.
TM
Thermostat Operating Mode
Power-up state = 0
TM = 0 — Comparator mode.
TM = 1 — Interrupt mode.
See the OPERATION–Thermostat section for a detailed description
of these modes.
SD
Shutdown
Power-up state = 0
SD = 0 — Active conversion and thermostat operation.
SD = 1 — Shutdown mode.
See the SHUTDOWN MODE section for a detailed description of
this mode.
Table 5. RESOLUTION CONFIGURATION
R1
R0
THERMOMETER
RESOLUTION
MAX CONVERSION
TIME
0
9–bit
150 ms
0
1
10–bit
300 ms
1
0
11–bit
600 ms
1
12–bit
1200 ms
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