DS1626 Dallas, DS1626 Datasheet - Page 10

• Manufacturer Part Number: DS1626
• Description: High-Precision 3-Wire Digital Thermometer and Thermostat
• Manufacturer: Dallas

Table 5. CONFIGURATION REGISTER BIT DESCRIPTIONS
*NV (EEPROM)
Table 6. RESOLUTION CONFIGURATION
DONE
(Read Only)
THF
(Read/Write)
TLF
(Read/Write)
NVB
(Read Only)
R1*
(Read/Write)
R0*
(Read/Write)
CPU*
(Read/Write)
1SHOT*
(Read/Write)
(USER ACCESS)
BIT NAME
Power-up state = 1.
DONE = 0. Temperature conversion is in progress.
DONE = 1. Temperature conversion is complete.
Power-up state = 0.
THF = 1. The measured temperature has reached or exceeded the value stored in
the T
the power is cycled, or a Software POR command is issued.
Power-up state = 0.
TLF = 1. The measured temperature has equaled or dropped below the value
stored in the T
the user, the power is cycled, or a Software POR command is issued.
Power-up state = 0.
NVB = 1. Write to an E
NVB = 0. NV memory is not busy.
Power-up state = last value written to this bit.
Sets conversion resolution (see Table 6).
Initial state from factory = 1.
Power-up state = last value written to this bit.
Sets conversion resolution (see Table 6).
Initial state from factory = 1.
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.
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.
R1
H
0
0
1
1
register. THF will remain a 1 until it is overwritten with a 0 by the user,
R0
0
1
0
1
L
register. TLF will remain a 1 until it is overwritten with a 0 by
RESOLUTION
FUNCTIONAL DESCRIPTION
2
10-bit
11-bit
12-bit
memory cell is in progress.
9-bit
10 of 13
CONVERSION
TIME (MAX)
93.75ms
187.5ms
375ms
750ms