Rainbow-electronics DS1631 Bedienungsanleitung PDF herunterladen (Seite 5)

DS1631

5 of 14

THERMOSTAT OUTPUT OPERATION Figure 3

CONFIGURATION REGISTER

The configuration register allows the user to program various DS1631 options such as conversion

resolution, T

OUT

polarity, and operating mode. It also provides information to the user about conversion

status, EEPROM activity, and thermostat activity. The configuration register is arranged as shown in

Figure 4 and detailed descriptions of each bit are provided in Table 5. This register can be read from and

written to using the Access Config command. Note that the POL and 1SHOT bits are stored in EEPROM

and all other configuration register bits are SRAM.

CONFIGURATION REGISTER Figure 4

MSb

it 6

it 5

it 4

it 3

it 2

it 1 LSb

DONE THF TLF NVB R1 R0 POL* 1SHOT*

*NV (EEPROM)

RESOLUTION CONFIGURATION Table 4

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

START, STOP, AND ACK SIGNALS Figure 5

Temp

POL=1 (T

OUT

is active high)

ic 0

ic 1

OUT

SCL

SDA

START

Condition

STOP

Condition

…

ACK (or NACK)

From Receiver

1 2 3 4 5 6 7 8 9 10 ... 13 14

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