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LM95231BIMM-1 Datasheet(PDF) 14 Page - National Semiconductor (TI) |
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LM95231BIMM-1 Datasheet(HTML) 14 Page - National Semiconductor (TI) |
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14 / 20 page  2.0 LM95231 Registers (Continued) 2.1 STATUS REGISTER (Read Only Address 02h): D7 D6 D5 D4 D3 D2 D1 D0 Busy Reserved R2TME R1TME RD2M RD1M 000 Bits Name Description 7 Busy When set to "1" the part is converting. 6-4 Reserved Reports "0" when read. 3 Remote 2 TruTherm Mode Enabled (R2TME) When set to "1" indicates that the TruTherm Mode has been activated for Remote diode 2. After being enabled TruTherm Mode will take at most one conversion cycle to be fully active. 2 Remote 1 TruTherm Mode Enabled (R2TME) When set to "1" indicates that the TruTherm Mode has been activated for Remote diode 1. After being enabled TruTherm Mode will take at most one conversion cycle to be fully active. 1 Remote Diode 2 Missing (RD2M) When set to "1" Remote Diode 2 is missing. (i.e. D2+ shorted to V DD, Ground or D2-, or D2+ is floating). Temperature Reading is FFE0h which converts to 255.875 ˚C if unsigned format is selected or 8000h which converts to –128.000 ˚C if signed format is selected. Note, connecting a 2N3904 transistor to Remote 2 inputs with TruTherm mode active may also cause this bit to be set. 0 Remote Diode 1 Missing (RD1M) When set to "1" Remote Diode 1 is missing. (i.e. D1+ shorted to V DD, Ground or D1-, or D1+ is floating). Temperature Reading is FFE0h which converts to 255.875 ˚C if unsigned format is selected or 8000h which converts to –128.000 ˚C if signed format is selected. Note, connecting a 2N3904 transistor to Remote 1 inputs with TruTherm mode active may also cause this bit to be set. 2.2 CONFIGURATION REGISTER (Read Address 03h /Write Address 03h): D7 D6 D5 D4 D3 D2 D1 D0 0 RUN/STOP CR1 CR0 0 R2DF R1DF 0 Bits Name Description 7 Reserved Reports "0" when read. 6 RUN/STOP Logic 1 disables the conversion and puts the part in standby mode. Conversion can be activated by writing to one-shot register. 5-4 Conversion Rate (CR1:CR0) 00: continuous mode 75.8 ms, 13.2 Hz (typ), when diode mode is selected for both remote channels; 77.5 ms, 12.9 Hz (typ), when TruTherm Mode is enabled for one remote channel. 01: converts every 182 ms, 5.5 Hz (typ) 10: converts every 1 second, 1 Hz (typ) 11: converts every 2.7 seconds, 0.37 Hz (typ) Note: typically a remote diode conversion takes 30 ms with diode mode is selected; when the TruTherm Mode is selected a conversion takes an additional 1.7 ms; a local conversion takes 15.8 ms. 3 Reserved Reports "0" when read. 2 Remote 2 Data Format (R2DF) Logic 0: unsigned Temperature format (0 ˚C to +255.875 ˚C) Logic 1: signed Temperature format (-128 ˚C to +127.875 ˚C) 1 Remote 1 Data Format (R1DF) Logic 0: unsigned Temperature format (0 ˚C to +255.875 ˚C) Logic 1: signed Temperature format (-128 ˚C to +127.875 ˚C) 0 Reserved Reports "0" when read. Power up default is with all bits “0” (zero) www.national.com 14 |
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Similar Description - LM95231BIMM-1 |
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