DS18B20

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R0, R1: Thermometer resolution bits. Table 3 below defines the resolution of the digital thermometer,

based on the settings of these 2 bits. There is a direct tradeoff between resolution and conversion time, as

depicted in the AC Electrical Characteristics. The factory default of these EEPROM bits is R0=1 and

R1=1 (12-bit conversions).

Thermometer Resolution Configuration Table 3

R1

R0

Thermometer

Resolution

Max Conversion

Time

0

0

9 bit

93.75 ms

0

1

10 bit

187.5 ms

1

0

11 bit

375 ms

1

1

12 bit

750 ms

DS18B20 MEMORY MAP Figure 8

TEMPERATURE LSB

TEMPERATURE MSB

TH/USER BYTE 1

TL/USER BYTE 2

CONFIG

RESERVED

RESERVED

CRC

TH/USER BYTE 1

TL/USER BYTE 2

RESERVED

SCRATCHPAD

BYTE

0

1

2

3

4

5

6

7

8

E

CONFIG