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DS1726 Datasheet(PDF) 10 Page - Dallas Semiconductor |
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DS1726 Datasheet(HTML) 10 Page - Dallas Semiconductor |
10 / 13 page DS1626/DS1726 10 of 13 Table 5. CONFIGURATION REGISTER BIT DESCRIPTIONS BIT NAME (USER ACCESS) FUNCTIONAL DESCRIPTION DONE (Read Only) Power-up state = 1. DONE = 0. Temperature conversion is in progress. DONE = 1. Temperature conversion is complete. THF (Read/Write) Power-up state = 0. THF = 1. The measured temperature has reached or exceeded the value stored in the TH register. THF will remain a 1 until it is overwritten with a 0 by the user, the power is cycled, or a Software POR command is issued. TLF (Read/Write) Power-up state = 0. TLF = 1. The measured temperature has equaled or dropped below the value stored in the TL register. TLF will remain a 1 until it is overwritten with a 0 by the user, the power is cycled, or a Software POR command is issued. NVB (Read Only) Power-up state = 0. NVB = 1. Write to an E2 memory cell is in progress. NVB = 0. NV memory is not busy. R1* (Read/Write) Power-up state = last value written to this bit. Sets conversion resolution (see Table 6). Initial state from factory = 1. R0* (Read/Write) Power-up state = last value written to this bit. Sets conversion resolution (see Table 6). Initial state from factory = 1. CPU* (Read/Write) Power-up state = last value written to this bit. CPU = 1. Stand-alone mode is disabled. CPU = 0. Stand-alone mode is enabled when RST = 0. See CPU BIT AND STAND-ALONE THERMOSTAT OPERATION section for more information. Initial state from factory = 0. 1SHOT* (Read/Write) Power-up state = last value written to this bit. 1SHOT = 1: One-Shot Mode. The Start Convert T command initiates a single temperature conversion and then the device goes into a low-power standby state. 1SHOT = 0: Continuous Conversion Mode. The Start Convert T command initiates continuous temperature conversions. Initial state from factory = 0. *NV (EEPROM) Table 6. RESOLUTION CONFIGURATION R1 R0 RESOLUTION CONVERSION TIME (MAX) 0 0 9-bit 93.75ms 0 1 10-bit 187.5ms 1 0 11-bit 375ms 1 1 12-bit 750ms |
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