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EMC1073 Datasheet(PDF) 32 Page - SMSC Corporation |
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EMC1073 Datasheet(HTML) 32 Page - SMSC Corporation |
32 / 45 page Multiple Channel 1°C Temperature Sensors with Selectable Address Datasheet Revision 1.39 (10-11-10) 32 SMSC EMC1073 / EMC1074 DATASHEET The device contains both high and low limits for all temperature channels. If the measured temperature exceeds the high limit, then the corresponding status bit is set and the ALERT pin is asserted. Likewise, if the measured temperature is less than or equal to the low limit, the corresponding status bit is set and the ALERT pin is asserted. The data format for the limits must match the selected data format for the temperature so that if the extended temperature range is used, the limits must be programmed in the extended data format. The limit registers with multiple addresses are fully accessible at either address. When the device is in standby mode, updating the limit registers will have no affect until the next conversion cycle occurs. This can be initiated via a write to the One Shot Register or by clearing the RUN / STOP bit in the Configuration Register (see Section 6.4). 6.7 Scratchpad Registers The Scratchpad Registers are Read Write registers that are used for place holders to be software compatible with legacy programs. Reading from the registers will return what is written to them. 18h R/W External Diode 2 Low Limit Low Byte 0.5 0.25 0.125 - - - - - 00h 2Ch R/W External Diode 3 High Limit High Byte 128 6432 16 8 42 1 55h (85°C) 2Dh R/W External Diode 3 Low Limit High Byte 128 6432 16 8 42 1 00h (0°C) 2Eh R/W External Diode 3 High Limit Low Byte 0.5 0.25 0.125 - - - - - 00h 2Fh R/W External Diode 3 Low Limit Low Byte 0.5 0.25 0.125 - - - - - 00h Table 6.8 Scratchpad Register ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT 11h R/W Scratchpad 7 6 5 4 3 2 1 0 00h 12h R/W Scratchpad 7 6 5 4 3 2 1 0 00h Table 6.7 Temperature Limit Registers (continued) ADDR. R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT |
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