DS1616

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DS1616 TEMPERATURE HISTOGRAM DATA BINS Figure 2d

Address

Register

800

-40°C Data Bin (LSB)

801

-40°C Data Bin (MSB)

802

-38°C Data Bin (LSB)

803

-38°C Data Bin (LSB)

804

↓

87B

↓

87C

82°C Data Bin (LSB)

87D

82°C Data Bin (MSB)

87E

84°C Data Bin (LSB)

87F

84°C Data Bin (MSB)

DS1616 ADC DATA HISTOGRAM DATA BINS Figure 2e

Address

Register

880

Channel 1 Code 00-03h Data Bin (LSB)

881

Channel 1 Code 00-03h Data Bin (MSB)

882

Channel 1 Code 04-07h Data Bin (LSB)

883

Channel 1 Code 04-07h Data Bin (MSB)

884

↓

8FB

↓

8FC

Channel 1 Code F8-FBh Data Bin (LSB)

8FD

Channel 1 Code F8-FBh Data Bin (MSB)

8FE

Channel 1 Code FC-FFh Data Bin (LSB)

8FF

Channel 1 Code FC-FFh Data Bin (MSB)

THERMAL SENSOR

The key to temperature monitoring in the DS1616 is an integrated thermal sensor. The thermal sensor

can measure temperature from -40

°C to +85°C in 0.5°C increments (Fahrenheit equivalent is -40°F to

+183.2

°F in 1.8°F increments). The thermal sensor provides an accuracy of ±2°C.

The thermal sensor is enabled by setting the CS0 bit of the Control 2 register to a logic 1. If the CS0 bit

is a logic 0, the thermal sensor will not be activated during a datalogging mission or for an individual

Read Data command. If CS0 = 0, the value in the Current Temperature register will be 11111111b.

The format of temperature data is defined such that the temperature value is maintained in a single byte of

data. Table 1 illustrates the format of the temperature data byte format. The values of T[7..0] range from

00000000b (for -40

°C) to 11111010b (for +85°C). Each increment in the value of T[7..0] represents an

increase in temperature of 0.5

°C. The following simple formula can be used to translate the temperature

data byte value into degrees Celsius:

°C = 0.5(T[7..0]) - 40