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DS1920 Datasheet(PDF) 11 Page - Dallas Semiconductor |
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DS1920 Datasheet(HTML) 11 Page - Dallas Semiconductor |
11 / 22 page DS1920 11 of 22 Read Scratchpad [BEh] This command reads the complete scratchpad. After the last byte of the scratchpad is read, the bus master will receive an 8-bit CRC of all scratchpad bytes. If not all locations are to be read, the master may issue a reset to terminate reading at any time. Copy Scratchpad [48h] This command copies from the scratchpad into the EEPROM of the DS1920, storing the temperature trigger bytes in nonvolatile memory. The bus master has to enable a strong pullup for at least 10 ms immediately after issuing this command. Convert Temperature [44h] This command begins a temperature conversion. No further data is required. The bus master has to enable a strong pullup for 0.5 seconds immediately after issuing this command. Recall [B8h] This command recalls the temperature trigger values stored in EEPROM to the scratchpad. This recall operation happens automatically upon power-up to the DS1920 as well, so valid data is available in the scratchpad as soon as the device has power applied. |
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Similar Description - DS1920 |
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