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TMP100MDBVREP датащи(PDF) 9 Page - Texas Instruments |
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TMP100MDBVREP датащи(HTML) 9 Page - Texas Instruments |
9 / 22 page TMP100−EP, TMP101−EP DIGITAL TEMPERATURE SENSOR WITH I2C INTERFACE SGLS254A − JULY 2005 - REVISED APRIL 2010 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION high and low limit registers In comparator mode (TM = 0), the ALERT pin of the TMP101 becomes active when the temperature equals or exceeds the value in THIGH and generates a consecutive number of faults according to fault bits F1 and F0. The ALERT pin remains active until the temperature falls below the indicated TLOW value for the same number of faults. In Interrupt Mode (TM = 1) the ALERT Pin becomes active when the temperature equals or exceeds THIGH for a consecutive number of fault conditions. The ALERT pin remains active until a read operation of any register occurs or the device successfully responds to the SMBus Alert Response Address. The ALERT pin will also be cleared if the device is placed in Shutdown Mode. Once the ALERT pin is cleared, it will only become active again by the temperature falling below TLOW. When the temperature falls below TLOW, the ALERT pin becomes active and remains active until cleared by a read operation of any register or a successful response to the SMBus Alert Response Address. Once the ALERT pin is cleared, the above cycle repeats with the ALERT pin becoming active when the temperature equals or exceeds THIGH. The ALERT pin can also be cleared by resetting the device with the General Call Reset command. This also clears the state of the internal registers in the device returning the device to Comparator Mode (TM = 0). The ALERT pin function for both operational modes is represented in Figure 4. Table 9 and Table 10 describe the format for the THIGH and TLOW registers. Power-up reset values for THIGH and TLOW are: THIGH = 80°C and TLOW = 75°C. The format of the data for THIGH and TLOW is the same as for the temperature register. All 12 bits for the temperature, THIGH, and TLOW registers are used in the comparisons for the ALERT function for all converter resolutions. The three LSBs in THIGH and TLOW can affect the ALERT output even if the converter is configured for 9-bit resolution. Byte D7 D6 D5 D4 D3 D2 D1 D0 1 H11 H10 H9 H8 H7 H6 H5 H4 Byte D7 D6 D5 D4 D3 D2 D1 D0 2 H3 H2 H1 H0 0 0 0 0 Table 9. Bytes 1 and 2 of THIGH Register Byte D7 D6 D5 D4 D3 D2 D1 D0 1 L11 L10 L9 L8 L7 L6 L5 L4 Byte D7 D6 D5 D4 D3 D2 D1 D0 2 L3 L2 L1 L0 0 0 0 0 Table 10. Bytes 1 and 2 of TLOW Register |
Аналогичный номер детали - TMP100MDBVREP |
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Аналогичное описание - TMP100MDBVREP |
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