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參數(shù)資料
| 型號(hào)： | LM82 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| 中文描述： | 遠(yuǎn)程二極管和本地?cái)?shù)字溫度傳感器兩線接口 |
| 文件頁(yè)數(shù)： | 13/17頁(yè) |
| 文件大小： | 341K |
| 代理商： | LM82 |
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1.0 Functional Description
(Continued)
2.2 LOCAL and REMOTE TEMPERATURE REGISTERS (LT, and RT)
(Read Only Address 00h, and 01h):
D7
D6
D5
D4
D3
MSB
Bit 6
Bit 5
Bit 4
Bit 3
D7–D0: Temperature Data. One LSB = 1C. Two’s complement format.
D2
Bit 2
D1
Bit 1
D0
LSB
2.3 STATUS REGISTER
(Read Only Address 02h):
D7
0
Power up default is with all bits “0” (zero).
D0: LCRIT: When set to a 1 indicates an Local Critical Temperature alarm.
D1: RCRIT: When set to a 1 indicates a Remote Diode Critical Temperature alarm.
D2: D2OPEN: When set to 1 indicates a Remote Diode disconnect.
D4: D2RHIGH: When set to 1 indicates a Remote Diode HIGH Temperature alarm.
D6: LHIGH: When set to 1 indicates a Local HIGH Temperature alarm.
D7, D5, and D3: These bits are always set to 0 and reserved for future use.
D6
D5
0
D4
D3
0
D2
D1
D0
LHIGH
RHIGH
OPEN
RCRIT
LCRIT
2.4 MANUFACTURERS ID and DIE REVISION(Stepping)
REGISTERS
(Read Address FEh and FFh) Default value 01h for Manufacturers ID(FEh ).
2.5 CONFIGURATION REGISTER
(Read Address 03h/Write Address 09h):
D7
INT mask
D6
0
D5
D4
D3
D2
Local
T_CRIT_A
mask
D1
D0
0
Remote
T_CRIT_A
mask
Remote
T_CRIT_A
mask
Remote
T_CRIT_A
mask
INT Inversion
Power up default is with all bits “0” (zero).
D7: INT mask: When set to 1 INT interrupts are masked.
D5: T_CRIT mask, this bit must be set to a 1 before the T_CRIT setpoint is lowered below 127 in order for T_CRIT_A pin to func-
tion properly.
D4: T_CRIT mask for Remote temperature, when set to 1 a remote temperature reading that exceeds T_CRIT setpoint will not
activate the T_CRIT_A pin.
D3: T_CRIT mask, this bit must be set to a 1 before the T_CRIT setpoint is lowered below 127 in order for T_CRIT_A pin to func-
tion properly.
D2: T_CRIT mask for Local reading, when set to 1 a Local temperature reading that exceeds T_CRIT setpoint will not activate
the T_CRIT_A pin.
D1: INT active state inversion. When INT Inversion is set to a 1 the active state of the INT output will be a logical high.Alow would
then select an active state of a logical low.
D6 and D0: These bits are always set to 0 and reserved for future use. A write of 1 will return a 0 when read.
2.6 LOCAL, and REMOTE HIGH SETPOINT REGISTERS (LHS, RHS)
(Read Address 05h, 07h/Write Address 0Bh, 0Dh):
D7
D6
D5
D4
D3
MSB
Bit 6
Bit 5
Bit 4
Bit 3
D7–D0: HIGH setpoint temperature data. Power up default is LHIGH = RHIGH=127C.
D2
Bit 2
D1
Bit 1
D0
LSB
2.7 T_CRIT REGISTER (TCS)
(Read Address 42h/Write Address 5Ah):
D7
D6
D5
MSB
Bit 6
Bit 5
D7–D0: T_CRIT setpoint temperature data. Power up default is T_CRIT = 127C.
D4
Bit 4
D3
Bit 3
D2
Bit 2
D1
Bit 1
D0
LSB
L
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相關(guān)代理商/技術(shù)參數(shù) |
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| LM82_04 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
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