Rainbow-electronics MAX6626 Manual do Utilizador descarregar pdf (Página 9)

MAX6625/MAX6626

9-Bit/12-Bit Temperature Sensors with

C-Compatible Serial Interface in a SOT23

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D7 D6 D5 D4 D3 D2 D1 D0

00000 0

(see Table 3)

Table 2. Pointer Register

D7 to D2: Will read all zeros, cannot be written.

PART D15

D14

D13

D12

D11

D10

D2–D0

MAX6625

MSB

(Sign)

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB

0000 0

MAX6625

MSB

(Sign)

Bit

Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB

Table 4. Temperature Register

D6 D5 D4 D3

D2 D1 D0

Fault

Queue

Depth

Polarity

Comparator

or Interrupt

Mode

Shutdown

Table 5. Configuration Register

All defaults = 0.

D0: 0 = Normal operation, 1 = Shutdown.

D1: 0 = Comparator mode, 1 = Interrupt mode.

D2: 0 = Active low, 1 = Active high.

D7 to D5: Reserved locations, always write zeros.

D4 D3 NUMBER OF FAULTS

0 0 1 (Default)

01 2

10 4

11 6

Table 6. Fault Queue Depth

D1 D0 REGISTER

0 0 Temperature (Default)

0 1 Configuration

10T

LOW

11T

HIGH

Table 3. Register Select

D6 to D0, MAX6625: Will read all zeros, cannot be written.

D2 to D0, MAX6626: Will read all zeros, cannot be written.

D15: MSB is the sign bit.

1LSB = 0.5°C for the MAX6625.

1LSB = 0.0.0625°C for the MAX6626.

Temperature is stored in two’s-complement format.

1 2 3 4 5 6 7 8 9 10 11 12 13

MAX6625/MAX6626 1

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