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LM81 датащи(PDF) 29 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали LM81
подробное описание детали  Serial Interface ACPI-Compatible Microprocessor System
PDF  32 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
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LM81 датащи(HTML) 29 Page - National Semiconductor (TI)

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Functional Description (Continued)
13.14 Extended Mode Register 1 — Address 4Ch
Power on default – <7:0> = 0100 0100 binary
Bit
Name
Read/Write
Description
0
Extended Mode
Enable
Read/Write
A one enables the Extended Interrupt Modes, the T_CRIT_A output and all the
functions listed in the Extended Mode Registers. Bit 7 of the Interrupt Status
register will be activated to reflect the interrupt status of the LOW limit comparison
result.
1
LOW Limit Mask
Bit
Read/Write
A mask bit for the LOW limit Interrupt. A one disables the interrupt from propagating
to the INT pin.
2-3
T_CRIT_A
Interrupt Mode
Select
Read/Write
The state of these bits select the interrupt mode for T_CRIT_A as described below.
<3:2> = 00 or <3:2> = 11: Repetitive Interrupt Mode
<3:2> = 01: One-Time Interrupt Mode
<3:2> = 10: Comparator Mode
4
T_CRIT_A
Enable
Read/Write
A one enables the T_CRIT_A pin.
5
T_CRIT_A
Polarity
Read/Write
A one sets the T_CRIT_A pin active HIGH. A zero sets the T_CRIT_A pin active
LOW.
6
T_CRIT_A Mask
Enable
Read/Write
A one prevents the T_CRIT_A interrupt from propagating to the INT output pin.
7
T_CRIT_A Status
Bit
Read
A one indicates that a T_CRIT_A interrupt has occurred.
13.15 Extended Mode Register 2 — Address 4Dh
Power on default – <7:0> = 0000 0000 binary
Bit
Name
Read/Write
Description
0-2
Hysteresis Offset
Value
Read/Write
T
HYST value.
3
12-bit
Temperature
Resolution Enable
Read/Write
A one sets the temperature resolution to 12 bits.
4-7
12-bit
Temperature Data
Read Only
12-bit temperature data least significant bits. Bit 7 mirrors bit 7 in the temperature
configuration register (4Bh) and has a weight of 0.5˚C; bits 6-4 have a weight of
0.25, 0.125, and 0.0625˚C, respectively.
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